2009 Pontiac G8 Pontiac G8 2009

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2009 Pontiac G8 repairs by problem area

Engine (28%)

Transmission and Drivetrain (3%)

Brakes and Traction Control (2%)

Suspension and Steering (20%)

Electrical and Air Conditioning (26%)

Paint, Rust, Leaks, Rattles, and Trim (16%)

Other (5%)

Chart based on 322 repairs.
See TSBs and recalls for the 2009 Pontiac G8.

2009 Pontiac G8 repair cost distribution

$2500+ (2%)

$1000 - $2499 (6%)

$500 - $999 (12%)

$100 - $499 (25%)

< $100 (55%)

Chart based on 165 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Non-members can see only ten 2009 Pontiac G8 repair histories. Log in or join us to see them all.

2009 Pontiac G8

Engine not specified

Pontiac G8 in Ontario, Canada
Jun 2009 - Mar 2010
Jul 2009

620 mi
Adjust driver side door. Replace weather strip in trunk. Replace glove box. Right rear sub clipping. Dealer screwed up by not removing suspension shipping blocks. I complained immediately about strange noises from suspension. They said to drive it 1000 km, then they'd look at it. Figured out problem myself, another dealer removed them for me. 

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2009 Pontiac G8 4dr Sedan

415-horsepower 6.2L V8 6-speed shiftable automatic RWD

Pontiac G8 in South Carolina, United States
Sep 2013 - May 2016
May 2014

21100 mi
Faulty Gas Cap was triggering check engine light. Replaced per service bulletin. 
Pontiac G8 in Wyoming, United States
Feb 2011 - Jul 2013
Sep 2011

21000 mi
Transmission slipping on shifts. Replaced seals (TSB), TCM reflash (TSB), and replaced 4-5-6 clutch pack. Lower Control Arm clunking on low speed bumps, replaced per TSB. Driver seat trim panel loose, replaced clips. 
Apr 2012

25700 mi
Driver seat trim panel loose, replaced panel Window trim on left rear door, replaced trim 
Pontiac G8 in Texas, United States
Jul 2009 - Sep 2011
Dec 2010

11000 mi
tire monitor 
Pontiac G8 in New Jersey, United States
Mar 2009 - Jun 2014
May 2009 Key fob falling apart new keyfob programmed with car. 
May 2012

25600 mi

US $600
Main console (Radio and A/C) would not function properly. Whole Unit needed to be replaced. 
Jun 2012

27000 mi
Tire pressure sensor (main sensor) failed. This failure occurred after a prior visit when tires were rotated. Suspicious. 
Jul 2012

27000 mi

US $20
Car overheating. A clamp on a radiator hose was not installed properly causing the hose to eventually come off. 

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2009 Pontiac G8 4dr Sedan

415-horsepower 6.2L V8 6-speed manual RWD

Pontiac G8 in District of Columbia, United States
Jun 2009 - Jul 2015
Apr 2012

20200 mi

US $250
Malfunctioning CHMSL array and side marker (was not bulb). Dealer repaired rodent damage to wiring harness, which fixed side marker, and ordered new CHMSL array. 
May 2012

21000 mi
Failed TPMS receiver. 
Pontiac G8 in South Carolina, United States
Apr 2010 - Jun 2013
May 2010

16000 mi
Leaking oil pan. Pan was removed. 
Jun 2010

17000 mi
Manual transmission has a leaky master slave cylinder. Part order and scheduled to be repaired next week.  
Oct 2011

22000 mi
Bad gas cap, replaced under warranty. 
Pontiac G8 in Texas, United States
Feb 2009 - Jun 2011
Dec 2009

7000 mi
Sunroof rattle. 

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2009 Pontiac G8 4dr Sedan

361-horsepower 6.0L V8 6-speed shiftable automatic RWD

Pontiac G8 in Washington, United States
Oct 2009 - Mar 2017
Dec 2009

11000 mi
Right side tail lamp replaced due to moisture inside. 
Nov 2010

22800 mi
Power window switch replaced due to no light on one of them. 
Pontiac G8 in Florida, United States
Sep 2010 - Nov 2011
Aug 2011

33000 mi
Whining noise. Replaced alternator  
Pontiac G8 in Virginia, United States
Dec 2010 - Feb 2012
Nov 2011

145000 mi

US $1100
Airbag fault 
Jan 2012

94000 mi

US $800
Front arm assembly 
Pontiac G8 in Ohio, United States
Jan 2011 - Oct 2011
Oct 2011

30000 mi
Oil leaking near rear main seal. Dealership put dye in and the car will be checked with blacklight to determine source of leak. 
Pontiac G8 in Ohio, United States
Dec 2010 - Sep 2017
Jul 2012

15000 mi
Rear main oil seal leak. This was likely from when the engine had to have a new camshaft installed 2.5 years ago @ 4800 miles, prior to us owning the vehicle. 
Pontiac G8 in Indiana, United States
May 2011 - Oct 2013
Oct 2011

30000 mi

US $365
Shift flare when cold. Replaced entire front pump assembly. 
Pontiac G8 in South Carolina, United States
Apr 2010 - Sep 2017
Jun 2010

7000 mi
Rubbing noise when turned steering wheel in cold (Below 32). 
Dec 2016

39000 mi

US $8
P0601 error, car shut down and entered safety mode. Reprogrammed ECM (still got error) then replaced ECM. 
Pontiac G8 in Minnesota, United States
Feb 2010 - Jan 2012
Apr 2010

7000 mi
Strut bushings were making a rubbery sound while turning steering wheel. This is a common defect and has a TSB on it. Replaced under warranty. 
Dec 2010

21000 mi
The steering wheel had leather trim that was lifting next to the center hub. The steering wheel column was loose. Both the steering wheel and the column cover were replaced. 
May 2011

32000 mi
All 4 control arms were replaced due to a clunking noise while going over bumps. 
Aug 2011

36900 mi
All of the control arms were replaced because the ball joints were loose. The engine had a flattened cam so it had the cam and lifters replaced. 
Pontiac G8 in Michigan, United States
Feb 2010 - Apr 2015
Jul 2010

12000 mi
Front sway bar loose. Parts ordered 
Apr 2014

63200 mi

US $400
Sway bars replaced 
Pontiac G8 in Pennsylvania, United States
Feb 2010 - Sep 2017
Mar 2010

5000 mi
Rattle in front suspension when cold--LF strut replaced along with all strut bearings and related bushings. Left side is quiet now but right side still rattles cold. 
Mar 2011

9000 mi
Fuel cap removes itself from the filler neck, causing a vacuum leak and setting acode that turns on the "Check Engine" light. 
Jun 2011

11000 mi
LR Inner axle boot leaking/ torn causing LR axle CV joint to be exposed to water/ dust/ dirt. 
Pontiac G8 in Florida, United States
Nov 2009 - Nov 2010
Feb 2010

5000 mi
Replaced antennae base for poor radio reception. 
Pontiac G8 in New Jersey, United States
Jun 2010 - Jun 2016
May 2013

83900 mi

US $200
New AC bracket, known TSB for this problem, to eliminate throwing of AC belt. 
Pontiac G8 in Virginia, United States
Jan 2011 - Nov 2011
May 2011

14000 mi
Check engine light came on (solid, not flashing). Problem determined to be emissions-related, and was diagnosed as a flawed gas cap. Part ordered. Problem code cleared. 
Jun 2011

15000 mi
Gas cap ordered from last repair trip was installed. 
Sep 2011

17000 mi
Check engine light was diagnosed as a faulty evap canister. Part needed to be ordered. Previous evap canister problem was fixed by replacing the part. 
Pontiac G8 in Washington, United States
Jul 2010 - Sep 2017
Dec 2010

17000 mi
Oil leak - previous shop did not attach oil filter on correctly. Oil drained and replaced and new filter installed, no leak after corrected oil change. 
Jul 2011

19200 mi
P0601 OBDII CEL. Comm error. Replaced ECM with new one. Issue resolved. 
Jun 2012

23000 mi

US $165
Replace failed battery. Worth noting that the car was stored for three winters in a row with no battery tender, so I really don't blame GM on this one. 
Mar 2014

31000 mi
Failing AFM lifter on L76 V8 cylinder 2 needing replacement, all lifters replaced, baffles added to oil pan as part of TSB repair. Oil and coolant replaced at same time. 
May 2014

31600 mi

US $430
Water leak into trunk. Grommet failed on seal for wiring harness from the trunk lid to the body. Water was leaking right side, behind trim, shorted out after market stereo - only reason discovered. 
Pontiac G8 in Texas, United States
Jun 2010 - Sep 2017
Sep 2011

28000 mi
Replaced lock mechanism in the drivers side door. Mechanism contained a sensor that could no longer determine when the door was open or closed, so things like overhead light wouldn't come on when the door was opened.  
Jul 2012

37000 mi
Slight rattle in passenger side B-pillar. Turned out to be something in the seat belt reel. 
Mar 2014

53000 mi
Throttle body malfunction caused a Check Engine message, along with reduced power for a short distance. Drove the car to the dealership. Dealer gave me a loaner, replaced the throttle body, and I got the car back the next day. 
Oct 2014

58000 mi

US $125
The car would no longer disconnect the Bluetooth connection to my phone when turned off. Also, RV mirror lights stayed on when car was off. Dealer reprogrammed the VCIM. This fixed both problems. 
May 2015

64000 mi

US $1000
Replaced front lower control arms on both sides of front suspension. Replace center high mounted brake light. Original LED light had stopped working. 
Jun 2015

65000 mi

US $1000
Replaced two motor mounts and transmission mount. 
Dec 2015

72000 mi

US $800
Alternator replaced. 
Mar 2016

74000 mi

US $303
AC drive belt broke. I had dealer replace both belts. Noise coming from front suspension over bumps. Very loud during cold weather. Dealer replaced both front struts and strut mounts. 
Pontiac G8 in Connecticut, United States
Jun 2015 - Jun 2016
Dec 2015

94000 mi

US $306
replaced throttle body 
Pontiac G8 in Ontario, Canada
Aug 2011 - Oct 2012
Jan 2012 Oil pan was porous  Rear door lock actuator replaced  Sunroof mechanism was cleaned and lubed  Exhaust related bulletin 
May 2012

25920 mi
P0521 - oil pressure sensor out of range 
Pontiac G8 in New York, United States
Feb 2015 - Nov 2015
Jul 2015

109800 mi

US $800
Alternator was no longer charging the battery fully cost of OEM (no aftermarket available) and new battery (first replacement since new)cam to $800 for both with labor. 
Pontiac G8 in Iowa, United States
Aug 2014 - Jun 2017
Oct 2014

30000 mi
Code P0455 gross evaporative emissions leak. Gas cap was repaired by dealer out of warranty as a free fix through GM. The gas cap was replaced. 
Pontiac G8 in New Jersey, United States
Aug 2014 - Jun 2016
Jan 2016

38000 mi

US $4000
Actual Fuel Management showing initial signs of failure required top end rebuild and cam-swap. 
Mar 2016

40000 mi

US $900
Rear left caliper seized, decided to replace rear calipers, do rotors, fluids, and get stainless steel lines. 
Pontiac G8 in Iowa, United States
Jul 2014 - Mar 2015
Sep 2014

27000 mi
Had to replace left rear abs sensor 
Pontiac G8 in Indiana, United States
Jun 2015 - Sep 2017
Dec 2015

114000 mi

US $45
Changed passenger side front interior door handle due to flaking metal 
Nov 2016

136700 mi

US $164
Battery would not hold a charge. Replaced original battery. 
Pontiac G8 in New York, United States
Mar 2015 - Jul 2017
May 2016

21400 mi
ECM replaced due to car going into reduced power mode and shutting down engine 
Pontiac G8 in Puerto Rico
Jun 2016 - Jul 2017
Feb 2016

43550 mi

US $600
ABS sensor. 
Pontiac G8 in Alberta, Canada
May 2015 - Jun 2015
Apr 2015

56420 mi

C $400
Changed front lower control arms. 
Pontiac G8 in Arizona, United States
Jun 2016 - Oct 2017
Apr 2017

129683 mi

US $698
Vehicle died, reduced power mode, check engine light while sitting in a parking lot. Occurred 3 times during the 24 hours before visiting dealer. Heat may have been an aggravating factor, but vehicle did not overheat. Code P0601. Dealer replaced ECM. No further problems. 
Pontiac G8 in Ohio, United States
Jun 2016 - Sep 2017
Sep 2016

89000 mi

US $5
Headliner started falling in back corners. Removed foam from both materials and glued back up. 
Apr 2017

98000 mi

US $20
Power steering pump pulley was not true and had a wobble. Replaced pulley. 
Sep 2017

104000 mi

US $25
Alternator had a chirp noise due to an internal bearing failing. Replaced alternator. TPMS sensor was was bad and needed replaced. 
Pontiac G8 in Florida, United States
Jul 2013 - Oct 2017
Jun 2015

30000 mi

US $175
Battery finally needed replacing. 
Pontiac G8 in Ontario, Canada
Dec 2011 - Jun 2017
Apr 2011

34765 mi

C $2500
Replaced lower control arms (under warranty - this was a known design flaw that was corrected on later parts); also replaced strut bearings. 
Apr 2014

78740 mi

C $110
Replaced sway bar end links after driver's side began to "clunk" over bumps. Lower ball end was loose/worn. 
Jul 2014

79660 mi
Aftermarket end links loose at point of connection on struts. Re-torqued. 
Oct 2016

84940 mi

C $500
Rear door locks malfunctioning. 
Pontiac G8 in Massachusetts, United States
Mar 2012 - Aug 2016
Sep 2012

85000 mi

US $30
A/C belt fell off the pulley. Replaced pulley and belt. Only happened this one time but I've read of it happening to others. There is an updated system with 2 pulleys, but too expensive at $350 for just the parts. 
Jan 2013

109800 mi
Problem with tire pressure monitoring system Keeps coming up system fault after driving for a period if time 
Aug 2014

140000 mi

US $180
Hood latch microswitch failed. Had to replace entire unit. 
Sep 2014

143000 mi

US $221
replaced end links 
Feb 2015

154000 mi

US $180
Replace idler pulley and serpentine belt 
May 2016

187000 mi

US $140
replace worn front struts 
Pontiac G8 in Michigan, United States
Nov 2011 - Dec 2016
Dec 2011

36000 mi
Had the motor mounts replaced under warranty to fix a vibration when it went into cylinder deactivation mode. 
Jul 2012

47800 mi
Keyfob buttons work intermittently. 
Sep 2012

52000 mi
Hazard button works intermittently. Replaced under CPO warranty. 
Jun 2013

69000 mi

US $70
Intermittent wipers not functioning properly. Replaced wiper switch. 
Apr 2015

101500 mi
ABS light on, code for left rear wheel sensor. Found broken wire at harness connector. Repaired. 
Jun 2015

104000 mi

US $200
Rear wheel bearing noisey. Replaced left rear bearing. 
Pontiac G8 in Texas, United States
Nov 2011 - Dec 2011
Dec 2011

56000 mi

US $350
Replaced belts and tensioner assemblies for both serpantine belt and ac belt due to squeaking. 
Pontiac G8 in Michigan, United States
Aug 2009 - Jun 2017
Jul 2009

7000 mi
Replace broken driver's seat trim (warranty). 
Apr 2011

19000 mi
Replaced engine mounts with upgrade design to eliminate vibration during AFM operation. Drivers seat lower trim broken - the panel that the power seat control is attached to. Second time this piece has ben replaced. 
Sep 2013

30000 mi

US $80
Radio would stay on when car turned off and driver's door opened. Replaced door lock assembly to fix problem. 
Nov 2014

35200 mi

US $300
Replace front lower control arms due to bad ball joints (right clunking over bumps, left preventive). Installed GM 92249538 all 4 front lower control arms. 
Pontiac G8 in Massachusetts, United States
Nov 2012 - Mar 2013
Mar 2013

50000 mi
Glovebox had 2 plastic guide pins break off which caused it to open randomly and hang down further than it should 
Pontiac G8 in California, United States
Mar 2013 - Apr 2016
May 2015

94000 mi

US $550
Radiator connection to the hose broke and new radiator was put in the car. 
Oct 2015

103000 mi

US $1250
Replacement of A/C belt and tensioners along with 100k scheduled maintenance. The belt was half broken and that had damaged the tensioners. 
Pontiac G8 in Illinois, United States
Jul 2012 - Jul 2014
Jul 2013

21300 mi
Strut mount bearing that needed replacing 
Jul 2014

28000 mi
Hazard button got stuck and wouldn't work. 
Pontiac G8 in New York, United States
Jul 2013 - Sep 2017
Mar 2015

67000 mi

US $450
Lower mufflers failing (loud droning). Replaced with performance tubes (mufflers not replaced). Cost shown is the labor to remove old mufflers and weld in new pipes. Doesn't include price of new pipes. 
Nov 2015

80000 mi

US $60
One power switch went bad in center console--had to replace the entire switch bank. Got it online for a fraction of dealer cost and installed myself. 
Jun 2017

110000 mi

US $60
Driver side rear passenger window not operating. Diagnosed as wiring harness failure, part ordered but not yet replaced. 
Aug 2017

115000 mi

US $1100
Interior trim on passenger side console popped out, was reinstalled. Passenger window issue finally fixed. Issue was pinched wiring--instead of replacing the wiring, the shop rewired the shorted items. Engine blipping issue--the ignitions wires were toast. plugs and wires replaced. 
Pontiac G8 in California, United States
Jun 2013 - Sep 2017
Oct 2014

67800 mi

US $960
EVAP solenoid and canister failed, were replaced 
Pontiac G8 in South Carolina, United States
Aug 2011 - Mar 2014
Mar 2012

35000 mi
Lifter noise at start up. Dealer could not duplicate. 
Pontiac G8 in Michigan, United States
Nov 2009 - Aug 2012
Mar 2011

15000 mi
Slow air leak on front tire. Bead seal lost integrity due to slight corrosion on rim. Dealer dismounted tire, removed corrosion, applied bead sealer, and reinstalled tire. 
Sep 2011

20000 mi
Rattle from passenger side front door trim. Dealer replaced door lock mechanism which had loose internal parts. Intermittent check engine light because fuel cap kept coming loose. Fuel fill neck missing attachment to body. Dealer replaced filler neck with new part. 
Nov 2011

21100 mi
Oil leak. Dealer replaced oil pan gasket. 
Jan 2012

22300 mi
Noise and vibration from front suspension. Dealer replaced front control arms. 
Apr 2012

24000 mi
A/C coolant leak at the compressor. Replaced compressor. 
Pontiac G8 in Oklahoma, United States
Feb 2009 - Apr 2015
Jun 2009

10000 mi
Check engine light due to faulty gas cap, new style cap ordered. Intermittent failure of audio display screen, new display ordered. Replaced gas cap for check engine light. Audio display screen replaced for intermittent failure. 
Nov 2010

25000 mi
CEL on at approx 24000 mi while on extended trip. OnStar diagnostics advised continue driving for a week or so. After 1000 mi over 6 days, CEL still on. At dealer, found DTC P0442 (evap leak); smoke test ok, but cleaned filler cap gasket. 
Jan 2012

35000 mi
Taken to dealer with vibration complaint at highway speeds, only apparent during AFM 4-cylinder operation. Engine mounts replaced, problem solved. 
Pontiac G8 in Connecticut, United States
Jan 2009 - Jul 2016
Jun 2010

10000 mi
Part of seat trim broke. Repaired but failed within a week. New parts on order. 
Aug 2010

11000 mi
A new problem arose. Window seal leaked damaging carpet. Seal repaired, but moldy smell remained. 
Sep 2010

11000 mi
Seat trim replaced then broke again, for the third time, after just one day. Did not replace all plastic parts properly. Seat trim replaced again. Replaced missing plastic parts. 
Oct 2010

12000 mi
Still has smell. Trying to get GM to fix it right. 
Dec 2010

13000 mi
Air conditioner makes noise intermittently. 
May 2011

14900 mi
Hopefully leak is finally fixed. 
Nov 2011

19000 mi
Changed airbag sensor, seat belt, and seat trim. 
Oct 2013

30200 mi
Repeat problem that dealer never fixed. I think it is finally fixed after pulling out everything and finding leak from door. 
Pontiac G8 in Mississippi, United States
Feb 2009 - Jun 2009
Mar 2009

70 mi
Transmission whine in 6th gear. Fixed by dealer before purchase. 
May 2009

4000 mi
Rattle in front suspension when driving over rough pavement. 
Jun 2009

4000 mi
Rattle in front suspension turned out to be faulty brake caliper. Faulty front window motor. Air conditioning vent noise. 
Pontiac G8 in California, United States
Jan 2009 - May 2011
Jul 2009

9000 mi
Climate control knobs don't always change temp properly. System works but can be a little "buggy". Dealer ordered new climate control unit.  
Nov 2009

14000 mi
Climate control knobs didn't always change temp properly. Dealer ordered new face unit for stereo/climate, replaced it, and reprogrammed. 
Pontiac G8 in New Jersey, United States
Mar 2009 - Mar 2012
Nov 2011

47000 mi

US $850
Lower control arms - rattle noise - TSB issue for this exists already 
Pontiac G8 in Virginia, United States
Apr 2009 - Sep 2015
Feb 2010

6000 mi
Replace key fob (stopped working), reinstalled panels to left of passenger seat (side of console), performed 2 recalls. 
Jan 2012

22000 mi
Emergency flasher button stuck in on position. Would not come back out. Pressed repeatedly until flashers went off with button still depressed. Dealer replaced under warranty, had to wait a day for the part. 
May 2015

44000 mi

US $2400
Engine damper at front of crank went bad, was wobbling making noises in serpentine belt. Told if it was not addressed engine bearings could go bad. 
Pontiac G8 in Missouri, United States
Mar 2009 - Nov 2010
Jul 2009

5000 mi
Exterior window trim deformed. Present at delivery. 
Feb 2010

17000 mi
Driver door sticks when opening. Misaligned from factory. dealer realigned door. 
Mar 2010

19000 mi
Diver's side door misaligned - sticks when opening. Dealer adjusted door too far and it took two subsequent trips to the dealer to get it right. Simple adjustment done improperly twice. 
Pontiac G8 in Pennsylvania, United States
Mar 2009 - Sep 2017
May 2010

13700 mi
Air bag fault light on checked TSB and repaired accordingly. Problem still present 
Jul 2010

16000 mi
Replaced passenger seat airbag sensor. Problem resolved. Control arms replaced due to loud thumping from front end when going over bumps. A TSB was issued to dealerships regarding this problem. 
Jan 2016

19200 mi

US $160
Sway bars were loose. Both replaced. Check engine light kept coming on. Fuel cap replace,problem resolved. 
Pontiac G8 in Maryland, United States
Jan 2009 - Apr 2013
May 2010

23200 mi
broken lifter squeaking noise when shifting from outside air to inside air 
Apr 2013

46000 mi
Lifters replaced at 22000 miles. Started failing again so i traded the car in 
Pontiac G8 in Virginia, United States
Jan 2009 - Jun 2011
Sep 2009

12000 mi
Rear main plate / main seal was small motor oil leak. Widely known issue with Generation IV "small block" engines. TSB Technical Service Bulletin exists for problem with solution & parts. 
Oct 2010

28000 mi
Lower control arm (LCA) on front both sides replaced. Known defect in ball joint leak. Technical service bulletin 09-03-08-008A . 
Pontiac G8 in California, United States
Aug 2008 - Mar 2010
Sep 2008

5 mi
Visible paint flaw, too thin, primer showing through. warranty repaint of one rear quarter panel with streak of too-thin paint. 
Pontiac G8 in Pennsylvania, United States
Jul 2008 - Jun 2011
Jan 2011

17200 mi
replaced the radio under warranty 
Pontiac G8 in Indiana, United States
Jul 2008 - Dec 2011
Aug 2008

1000 mi
Reflashed computer for a better shifting transmission. 
Jan 2010

8000 mi
Drive shaft was indexed and reinstalled to eliminate a vibration problem. Driveshaft still needs to be replaced. 
Apr 2010

8500 mi
Driveshaft was replaced. 
Dec 2011

24000 mi

US $90
Oil pan leak. Warranty covered sensor that indicates passenger in seat for airbag 
Pontiac G8 in Wisconsin, United States
Nov 2008 - Mar 2011
Sep 2008

2200 mi
smoke coming from the left front pillar wire for the vanity light on the drivers side viser was shorting out on the frame. dealer fixed under warranty 
Oct 2008

6200 mi
oil pan leaking from rear of pan 
Dec 2008

9000 mi
The oil pan was leaking I had to wait about one month for the part to arrive but was still able to drive the car. 
Apr 2009

14000 mi
After I had the oil pan resealed, I rechecked it and a block above the pan was leaking.  Had a filter installed in the Onstar because I could hear the engine in the speakers while using the Onstar phone.  Had panel for driver's side power seat replaced. 
Jun 2009

17000 mi
Oil pan leaking they fixed it and within weeks it was leaking again and they just gave me the run around saying it wasn't the pan. There is a rattle in the front left corner and they said that it was the control arm and the parts are ordered.  Finally they just resealed the pan. They also changed the panel on the drivers seat that holds the power seat switch again. 
Sep 2009

21000 mi
they replaced both of the lower control arms in the front and the rattle went away. The key would not stay locked in and the fob was falling apart. 
Pontiac G8 in New Mexico, United States
Jan 2009 - Nov 2016
Jan 2009

930 mi
Car died, dealer towed. Fuel pump was replaced 
Feb 2009

4000 mi
Onstar notified me. Said backup battery for Onstar system was dead, and this could result in a fire to have it replaced immediatly. Dealer replaced it same day, took about 2 hours. 
Aug 2011

36000 mi
kept getting check engine light, gas cap would be loose. replaced under warrenty 
Mar 2016

107000 mi

US $450
replaced front and rear struts and bushings 
Pontiac G8 in Vermont, United States
Jan 2009 - Mar 2010
Feb 2009 ECM/TCM update flash. 
Mar 2009

3000 mi
Squeaking around the shift lever and rattling noise from rear right door. 
May 2009

6000 mi
Squeaking around shift lever came back. Whine when driving above 60-65 in 6th gear. GM bulletin #PIP4458 Entire shifter column was replaced to fix squeaking. 
Jun 2009

8000 mi
Vehicle feels loose at 65+ mph, bounces on bumps, etc. Also steering wheel vibration at ~55-70 mph. 
Jul 2009

9000 mi
Vehicle feels loose at 65+ mph, bounces on bumps, etc. Also steering wheel vibration at ~55-70 mph. Service manager agreed that car bounces more than it should when pushed down with a hand. Mechanic confirmed wheel vibration as well. Nothing was done. 
Pontiac G8 in Illinois, United States
Jan 2009 - Jul 2014
Jul 2011

43000 mi

US $250
front control arm ball joint 
Pontiac G8 in California, United States
Jan 2009 - Sep 2017
Aug 2011

9000 mi
Intermittent problem with driver's door window. Sometimes window wouldn't go up or down but usually within 10 minutes would operate correctly. Dealer could not make window fail with repeated operation. Still fails occasionally. 
Mar 2012

12000 mi
Tire pressure monitoring system displayed --- for all four tires. Dealer said no error codes were noted and reset system. 
May 2016

16300 mi

US $280
Replaced Driver Door window motor. Did not fix. Dealer troubleshot problem reported since 2009 and finally, with my suggestion, checked the window controller board. Found a bad intermittent relay and replaced the board. Wow...6 years! 
Pontiac G8 in Florida, United States
May 2009 - Nov 2016
Oct 2012

40300 mi
Rear left wheel bearing was replaced. Front air dam damaged when being pulled onto rack requiring body work repair. 
Apr 2016

77000 mi

US $850
Heard knocking sound from right front wheel well. Diagnosed as strut mount. Could not get strut mounts from GM: Not in stock and no telling when. Anyone that had them were special order for customers. 
May 2016

77500 mi

US $850
I had to find my own strut mounts at BMR Suspension online. They carry suspension parts for any old or new GM vehicle. 
Pontiac G8 in Illinois, United States
Apr 2009 - Jul 2014
Dec 2009

5000 mi
Grinding noise coming from the steering that is more noticeable during cold weather. 
Jan 2010

6000 mi
Went in for same noise as described before. They replaced the steering column vein. Problem still exists.  
Feb 2010

6000 mi
Replaced strut mounts and bearings. Had almost a month now with no noises.  
Jul 2014

24000 mi

US $30
Had TSB #09-09-41-001 performed for small clicking noise coming from steering column 
Pontiac G8 in Northwest Territory, Canada
Oct 2009 - Jun 2017
Jul 2011

8260 mi
Ball joints had excessive wear, car unsafe to drive. Dealer replaced parts. Minor oil leak at rear of engine, trans dropped to inspect rear main seal. 
Pontiac G8 in Louisiana, United States
Feb 2010 - Jun 2017
Jun 2014

65000 mi
Lower control arm replaced 
Pontiac G8 in Maryland, United States
Nov 2009 - Jun 2017
Dec 2009

14000 mi
Valvetrain noise at cold start. No longer making the noise 
Pontiac G8 in South Dakota, United States
Aug 2009 - Feb 2012
Feb 2010

4900 mi
Alternator failed. 
Jul 2010

9000 mi
Replaced both front top strut mounts due to excessive wear/play.  
Aug 2010

9200 mi
Right front lower control arm worn/excessive play due to loose bolt. Tightened bolt; however replacement LCA, bolt and bushing ordered.  
Feb 2012

12000 mi
Required reprogramming the computer. 
Pontiac G8 in Wisconsin, United States
Aug 2009 - Jun 2011
Feb 2010

14000 mi
Lower control arm needed replacing... it's a common problem 
Pontiac G8 in Wisconsin, United States
Oct 2009 - Feb 2012
Aug 2010

27000 mi
Mentioned once at dealer since it started after scheduling for the recall updates, days before the visit. They said no problem, and determined the control arms need to be replaced per TSB #09-03-08-008. All four front control arms replaced per TAB. 
Mar 2011

33000 mi
Center console door hinge broken, shop ordered complete new lid. Hinged key-fob buttons worn completely thru. Shop ordered complete new hinged key fob. 
Apr 2011

33300 mi
Dealer installed complete new center console lid. Dealer replaced complete hinged key-fob. 
Pontiac G8 in Ontario, Canada
Oct 2009 - Sep 2017
Sep 2010

21080 mi
Clunking sound from front end on small bumps. Notified dealer of TSB #09-03-08-008A and requested this work be done. They agreed with my diagnosis and replaced all 4 lower control arms that had developed worn ball joints. 
Sep 2011

24180 mi
Oil change mechanic noticed oil stain at back of oil pan while he was doing oil change. Determined that the oil pan Gasket was causing leak. Dropped pan and replaced gasket and reinstalled. Cleaned old oil from pan. Problem fixed. 
Mar 2012

25420 mi
Air bag light on. Had not driven car since recall for air bag reprogramming. Dealer checked item, no trouble found and reset light. Ok since then. 
Pontiac G8 in Texas, United States
Jul 2008 - May 2010
Feb 2009

5000 mi
Had a vibration in the driveline. 
Pontiac G8 in District of Columbia, United States
Nov 2009 - Sep 2017
Jun 2015

39000 mi

US $250
Replaced third brake light. 
Pontiac G8 in North Carolina, United States
Nov 2009 - Sep 2014
Dec 2012

34000 mi

US $100
Nonfunctional passenger airbag control module 
Pontiac G8 in Pennsylvania, United States
Oct 2009 - Jun 2016
Nov 2009

7000 mi
Driver side front door window guide was causing streaking on the window. 
Dec 2010

26000 mi

US $100
Fuel cap did not seal properly. New cap ordered. left rear door speaker rattling. New speaker ordered. 
May 2011

36000 mi
Defective lifter. All lifters were replaced, as was the damaged cam shaft. GM has a TSB on this issue. 
Apr 2012

55000 mi
Speakers were replaced under warranty. Drivers side plastics seat trim broke. 
Sep 2013

83000 mi

US $600
Evap canister and purge vent solenoid had to be replaced. 
Dec 2015

128000 mi

US $300
Replaced power steering high-pressure line. 
Pontiac G8 in California, United States
Jul 2009 - Mar 2014
Mar 2010

6000 mi
Mass air flow sensor failure 
Mar 2012

29000 mi
Backlight went out in mirror control. Replaced under warranty Driver side rear power door lock intermittently worked/did not work. 
Dec 2012

35000 mi
Engine running rough, camshaft lobe and bearing pitted and galled on cylinder 7. Replaced camshaft and bearing. 
Pontiac G8 in Virginia, United States
Jul 2009 - Jun 2017
Oct 2009

5000 mi
Turn signal would not self cancel on left hand turns Engine compartment insulation missing several clips TPMS reprogrammed 
Mar 2010

8000 mi
Transmission flare and harsh shifts. 
Sep 2011

21000 mi
LED segments of the 3rd center mounted tail light were burned out. Entire assembly had to be replaced. 
Sep 2015

65000 mi

US $500
No oil pressure at cold start and idle speed. Would build normal pressure at higher RPM or warm start. Found broken timing chain tensioner and scored oil pump gears. Replaced timing chain, chain tensioner and oil pump. 
Oct 2015

65300 mi

US $1700
Previous problem (oil pump failure) was caused by one worn camshaft lobe/lifter putting metal into the engine. A tapping noise developed 2 weeks after the oil pump repair and the cam/lifters were replaced 
Pontiac G8 in Texas, United States
Aug 2009 - Oct 2010
Mar 2010

9000 mi
Engine light coming on. Fuel cap replaced. It was leaking pressure and making the system think the cap was off.  
Sep 2010

19000 mi
Windows became part timers. 
Oct 2010

19000 mi
Three times early on had car in shop for a rough idle. Ultimately told this is just how the 6-liter V8 idles. 
Pontiac G8 in Illinois, United States
May 2009 - Dec 2016
Apr 2016

60200 mi

US $750
strut collapsed 
Pontiac G8 in Ohio, United States
May 2009 - May 2015
Jul 2009

2000 mi
Driver seat left bottom plastic panel with power seat controls broke off. 
Sep 2009

3000 mi
Driver seat left bottom plastic panel with power seat controls broke off, second time. 
Oct 2009

3000 mi
Driver seat plastic lower left side panel holding power seat controls. 3rd time it happened. 
Feb 2010

6000 mi
Fuel pump located in gas tank. Had to get a tow and a rent a car. Alternator replaced. Also one heater hose ...had a cut in it. No cost to me, and a dealer car for 3 days. 
Mar 2010

6350 mi
Alternator replaced. Also one heater hose ...had a cut in it. No cost to me, and a dealer car for 3 days. Also had to replace the "onstar" back up battery.  
Aug 2010

11000 mi
#1. Driver side rear door coax speaker replaced/buzzing/distortion.No charge.  #2. Diver seat panel trim holding power seat controls replaced for the sixth time/no charge. 
Jan 2011

13000 mi
Drivers seat side panel that holds power seat buttons. It always breaks. Panel Part # 92207874. 
Aug 2012

23300 mi

US $20
E-VAP code so I replaced the gas cap. An OEM pontiac G8 8 cap.. Check Eng. light was out (Off) in less then a minute. 
Feb 2014

32000 mi

US $816
Right FRT Lower Contol Arm/Ball Joint. Left Rear ABS Sensor And Wiring Harness. #1.Synthetic oil and Filter/ Diagn test for ABS. #2.Right FRT Lower Contol Arm/Ball Joint. #3.Left Rear ABS Sensor And Wiring Harness. 
Pontiac G8 in Texas, United States
Jun 2009 - Sep 2017
Jun 2009

5500 mi
Check engine light for fuel evaporative emissions. Faulty connection to fuel tank, fuel tank replaced. Compass in mirror intermittently reversing north and south readings. Rear view mirror replaced and issue resolved. 
Jul 2009

6000 mi
Check engine light, vacuum test determined leak and smoke test pinpointed at faulty gas cap. New gas cap installed and issue resolved. 
Aug 2009

8000 mi
Check engine light, came up evaporative emissions related. Dealer said it was a current code, but could not find a leak. Reset light and has not come back since. Two times in a week, several minutes after warm start, alternator warning light came on for 10 seconds and then went off. Dealer said cable for alternator was not seated properly and problem has not returned. 
Apr 2010

19000 mi
Check engine light for evaporative emissions. Could not replicate problem, code was a history code and not presently happening. Reset and has not come back on yet. Same issue in July '09. 
Oct 2011

38200 mi

US $563
Driver door would not close, instead bouncing off latch mechanism. Could not fully unlock door after it was locked with the power locks or manually pushing the switch on the door. This only showed up after locking the door upon incident. 
Apr 2013

54700 mi

US $240
Check engine light came on, gas cap was bad and replaced (2nd replacement since new). 
Aug 2014

82100 mi

US $72
Replaced driver side seat trim after plastic brackets holding it to the seat broke off. I ordered a replacement online and put it on myself. Replaced driver side seat trim after plastic brackets holding it to the seat broke off. I ordered a replacement online for about $53 and put it on myself. Replaced driver side seat trim after plastic brackets holding it to the seat broke off. I ordered a replacement online and put it on myself. 
Sep 2014

84000 mi

US $250
Occasional odor from A/C. There was a service bulletin that called for a coating be applied to the evaporator (I believe). In the process, they said the system started losing pressure, so they discharged and recharged it at no extra cost. TPMS system fault reported after driving 20 minutes or so. Consistently comes on if driven that long. No tire pressure reading when it's on, reads fine when not. They re-learned the tires, which I had tried before. Still a problem. $0 cost. 
Nov 2014

88000 mi

US $250
Rattling from front passenger side of car. Strut mounts replaced on both front positions, control arm bushing was ruptured, control arm replaced. All struts up front are absent of nitrogen, parts on order and not included in the price abov TPMS sensors reporting system fault after the car is warmed up. Replaced all TPMS parts at all 4 corners when having new tires put on. This resolved the issue. 
Dec 2014

89000 mi

US $2500
Right front strut mount had separated. Both front strut mounts were replaced. Right front control arm bushing had disintegrated. Both front control arms replaced. Front struts and shocks no longer had gas in them, all 4 replaced. 
Aug 2015

99400 mi

US $600
Neck connecting hose to radiator broke off, causing vehicle to overheat. Replaced thermostat and hoses in addition to the new radiator. 
Feb 2017

109000 mi

US $1983
Front and rear brake pads low. First replacement of rear brake pads. Oil leak repair: Replace front crank seals, oil pan gasket, valve cover seals, oil pressure sender, oil pressure filter. Replaced hood gas struts 
Pontiac G8 in Alberta, Canada
Jun 2009 - Jul 2012
May 2009

682 mi
Tire PRESSURE MONITORING AND REGULATING SYSTEMS, 
Jan 2010

11470 mi
OnStar Battery replacement 
Jun 2010

16300 mi
All four front control arms required replacement. 

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2009 Pontiac G8 4dr Sedan

256-horsepower 3.6L V6 5-speed shiftable automatic RWD

Pontiac G8 in Michigan, United States
Apr 2009 - Mar 2010
Jul 2009

7000 mi
Engine light came on. Gas cap would not "seat" right, had to be replaced 
Pontiac G8 in Georgia, United States
Jan 2010 - Nov 2011
Apr 2010

9000 mi
Passenger airbag sensor not working properly 
May 2010

9700 mi
Passenger airbag sensor not working properly, replaced sensor passenger sensor and airbag sensor. 
Nov 2011

27000 mi
Needed to add thrust camshaft washer to the camshaft 
Pontiac G8 in Virginia, United States
Jan 2012 - Feb 2012
Feb 2012

43000 mi
Lower Control Arms, Left Side Lower Control Arm, Right Side Fuel Sensor in the gas tank 
Pontiac G8 in Indiana, United States
Feb 2009 - Aug 2011
Mar 2009 Annoying rattle in dash noticed when driving on a bumpy road. 
Apr 2009

2000 mi
Hard plastic trim piece fell off and broke. Dealer ordered entire assembly - $654 charged to GM. 
May 2010

19000 mi
Interior trim pieces fell off again. I think the interior was disassembled prior to my purchasing the car and not put back together correctly. The original repair was also not done correctly, I surmise. 
Jun 2010

21000 mi
Left rear window jammed about halfway up. Was able to force it up by hand with help. Do not recall dealer's explanation...something about a guide rail slipped. Repaired without replacing parts. 
Jan 2011 Rolled down right passenger window and it would not roll up--15 degrees and snowing. Svc tech said it was a short in the motor. Repaired successfully under warranty. 
Feb 2011

32000 mi
Same right-front window that would not roll up in Jan., happened again a month later. Dealer said part had to be ordered and forced up window manually so I could continue driving it until part came in.  
Mar 2011

33000 mi
Part came in, window motor replaced again. Noticed clunking noise when going over bumps at low speed. Googled symptoms and found a TSB for those symptoms requiring front lower control arm and ball stud replacement. Told dealer who looked at car and said, yes that's it. Repaired. 
Apr 2011

33700 mi
The replaced right front window motor failed a third time. Dealer said all they can do is keep replacing the part. I have contacted GM customer service. They gave me a "case number" and said I would hear back from them. 
May 2011

36000 mi
Right front window repaired a third time, but GM authorized more comprehensive parts replacement this time.  
Pontiac G8 in Virginia, United States
Apr 2010 - Sep 2015
Jul 2012

74000 mi

US $127
Fuel tank evap sender malfunctioned 
Mar 2014

105000 mi

US $1200
Airbag clock spring failed 
Sep 2014

114000 mi

US $450
replaced RH lower control arm 
Pontiac G8 in Alaska, United States
Oct 2012 - May 2015
Feb 2013

20300 mi

US $175
The suspension is too low in the rear left. Neither the dealership nor private garage (i saw two) can fix the problem. It's something that i am going to have to live with. 
Jan 2014

21200 mi

US $250
A the suspension is making a noise each time the car hit a bump or when someone is seating behind the driver's seat. 
May 2014

30100 mi

US $350
Ball joint 
Oct 2014

38800 mi

US $680
Ball joint, other side 
Pontiac G8 in British Columbia, Canada
Feb 2012 - Sep 2016
Oct 2015

81940 mi

C $200
Purge solenoid had failed, causing check engine light. 
Pontiac G8 in Michigan, United States
Mar 2009 - Aug 2012
Jun 2011

23000 mi
replaced faulty gas cap.. replaced faulty gas cap.. 
Jul 2011

23700 mi
refilled ac with proper amount of freon. was low fill from factory refilled ac with proper amount of freon. was low fill from factory 

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2009 Pontiac G8 Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2009 Pontiac G8 problems occur, check out our car reliability stats.