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2004 Pontiac Grand Prix repairs by problem area

Engine (44%)

Transmission and Drivetrain (3%)

Brakes and Traction Control (15%)

Suspension and Steering (10%)

Electrical and Air Conditioning (14%)

Paint, Rust, Leaks, Rattles, and Trim (3%)

Other (9%)

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Chart based on 86 repairs.

See TSBs and recalls for the 2004 Pontiac Grand Prix.

2004 Pontiac Grand Prix repair cost distribution

$2500+ (3%)

$1000 - $2499 (5%)

$500 - $999 (9%)

$100 - $499 (33%)

< $100 (49%)

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Chart based on 75 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

See repairs for all Pontiac Grand Prix model years.

Pontiac Grand Prix in Colorado, United States Feb 2011 - Dec 2017
Jun 2011 148000 mi US $5	Burned out turn signal/running light
Oct 2011 153200 mi US $763	Car would not start. Towed to Elway Chevrolet. Fual pump found to be bad. Fuel pump replaced. Problem solved.
Jan 2012 160000 mi	Had to replace plug and plug wire due to engine miss.
Jun 2012 170000 mi US $247	Replaced catalytic converter Replaced spark plus and plug wires
Feb 2013 184900 mi US $80	Replaced from wheel bearing
Nov 2013 206400 mi US $580	Power steering pump, oil change, flush brake lines
Feb 2014 216000 mi US $3470	No back pressure on downshift Hood struts worn out
Jun 2014 231000 mi US $745	Heater core leaking
Sep 2014 239000 mi US $443	Replaced brake fluid reservoir. Fluid level sensor failed. Replaced unit. Drained and flushed the system
Dec 2014 248000 mi US $635	Fluid leak. Radiator replaced
Apr 2015 262500 mi US $1788	Wheel bearings w/ harness and speed sensors replaced. Causing check engine light to come on an off Thermostat needed to be replaced. Causing check engine light Replaced MAP sensor due to error codes discovered when car was in for other service. Replacement part turned out to be defective and car had to be towed back to the shop. New sensor installed the next day fixed the problem
Jul 2015 271300 mi US $107	Had one headllight out. Replaced both. Pretty good since this is the first time in 11 years and 270K miles!
Dec 2015 289000 mi US $1200	Replaced steering rack
Jun 2016 307000 mi US $6459	Knocking noise from motor. Still running perfectly, but full diagnosis and repair was going to be expensive and made more sense to go with new motor. The rest of the car is still perfect!
Jul 2017 341000 mi US $1100	Replaced struts and tie rod end for the first time!!! Replace left wheel bearing. Flushed coolant
Nov 2017 349000 mi	Replaced defective steering rack under warranty

Pontiac Grand Prix in Texas, United States Jul 2009 - Mar 2012
Mar 2011 115000 mi US $130	Oxygen sensors replaced after engine light came on and indicated change. Thermostat replaced. Due to engine light code and diagnosis that it was stuck open keeping engine from heating up to standard operating temp.
Apr 2011 115200 mi US $170	Catalytic converter intenal components burnt up and caused PO420 engine code. Catalytic converter replaced with magnaflow non OE catalytic 3" exhaust connect custom fitted to OE 2.5" exhaust by shop Only $170 much cheaper than dealer repair
Sep 2011 118000 mi US $110	ABS Control Module taken out and sent to cheap-abs to be rebuilt. Cost with shipping $110 work done by myself and saved me over $1000 from cost dealer would have charged.

Pontiac Grand Prix in Minnesota, United States Apr 2009 - Jan 2011
Jan 2011 125000 mi	Valve cover gasket oil leak. Discovered at trade in. Did not repair.

Pontiac Grand Prix in Georgia, United States Aug 2009 - Nov 2013
Mar 2012 175000 mi US $809	With the transmission in Drive the car would not move.
Nov 2013 213000 mi US $300	Serpentine belt broke.

Pontiac Grand Prix in Virginia, United States Apr 2009 - Aug 2009
Aug 2009 59000 mi	Heads Up Display needed replacement, ~$500

Pontiac Grand Prix in Indiana, United States Jul 2012 - Aug 2012
Aug 2012 96000 mi	The heads up display spring had broken through the plastic it was mounted to, making the HUD not able to adjust. I took the unit out myself and remounted the spring.

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Pontiac Grand Prix in Virginia, United States Sep 2014 - Dec 2016
Sep 2014 150000 mi US $370	Coolant leak caused by plastic elbows hidden under the alternator caused engine overheating and destroyed the thermostat.
Sep 2015 160000 mi US $60	Coolant elbow seals failed again. This time I repaired them myself and used RTV gasket maker and put in some GM coolant sealer. Time will tell if this issue is behind us.
Oct 2015 160000 mi US $26	Large EVAP leak detected. Computer suggested to "Check Gas Cap". Replaced with a ACDelco GT279 from Amazon. The error code returned a couple hundred miles later.
Dec 2015 160000 mi US $802	Brake line failure due to rust. Replaced all brake lines because they were on their way out.
Jan 2016 160000 mi US $24	Haven't been able to narrow down the leak as of yet. Then the light went off on its own. The dealer thinks that it was a valve that was stuck open for a while.
Jul 2016 161000 mi	Parking brake seized on right rear caliper. Parking brake cable going to the left rear caliper snapped during the installation of the other side. Ended up replacing both the left and right parking brake cables and the equalizer.
Oct 2016 161000 mi US $40	Intermittent P0455 Gross EVAP leak code was coming up. Figured it was either the vent solenoid or purge solenoid. Replaced them both and the code went away and didn't come back. Took approximately 15 minutes to do with basic hand tools.

Pontiac Grand Prix in Ohio, United States Aug 2013 - Jun 2015
Oct 2014 139500 mi	Motor mount was worn.

Pontiac Grand Prix in West Virginia, United States Sep 2014 - Dec 2014
Nov 2014 132900 mi US $300	ABS activating unnecessarily; making rubbing noise on turning

Pontiac Grand Prix in Ontario, Canada - Jan 2006
Jan 2006 15500 mi C $50	Fix leak around OnStar antenna. Fixed under warranty.

Pontiac Grand Prix in New York, United States Jan 2018 - Jun 2018
Jun 2018 197000 mi	Would not pass state emissions inspection due to SES light on. Replaced downstream O2 sensor and rusted out evap line. Also replaced fuel filter and rusty fuel lines.

Pontiac Grand Prix in Texas, United States Sep 2013 - Jun 2018
May 2018 127000 mi US $200	Replaced both control arms - worn bearings

Pontiac Grand Prix in Alberta, Canada Apr 2013 - May 2013
May 2013 122140 mi C $154	front right ABS wheel sensor wires broken.

Pontiac Grand Prix in Pennsylvania, United States Dec 2014 - Apr 2017
Nov 2015 232000 mi US $93	Heard a chirping noise under the hood a few days prior to water pump failure. Water pump locked up (bearing worn out) and shredded the belt. Had to have car towed ($75)home. Replaced water pump, gasket,and belt for $93 (less $5 core charge).

Pontiac Grand Prix in Ohio, United States Jun 2011 - Oct 2012
Aug 2011 155600 mi US $200	Tie-rod needed replaced.
Jul 2012 171000 mi US $500	Fixture in the coolant line broke causing the fluid to flush and the car to overheat.

Pontiac Grand Prix in Indiana, United States Jun 2009 - Jul 2018
Mar 2010 98000 mi US $12	Replaced the left front low-beam headlamp.
Nov 2010 110000 mi US $192	Replaced both front headlamp assemblies with used OEM units that were like new. The originals were heavily oxidized, reducing the light the headlamps could provide.
Sep 2013 162000 mi US $90	Replaced left rear brake caliper that was slowly leaking brake fluid.
Nov 2013 164600 mi US $31	Polished cloudy headlamp lenses and applied UV protectant.
Apr 2014 171800 mi US $112	Replaced right rear brake caliper that was slowly leaking brake fluid, $90. The adjusting nut for the parking brake had seized. Replaced the left parking-brake cable and the adjuster, $22.
May 2014 173900 mi US $26	The HVAC air recirculation mode stopped working. Replaced the motor assembly for the recirculation door.
Jun 2014 176000 mi US $82	End links on front sway bar were loose, causing an occasional rattle in the front suspension. Replaced both links. Left-rear-door window would open slightly on its own and could not be raised with the motor because plastic part in the window regulator had broken. Replaced regulator and motor assembly.
Aug 2014 178900 mi US $56	Scan tool showed mass airflow (MAF) sensor read low at high engine loads, possibly high at idle. Had occasional spark knock under part-throttle load. New MAF sensor solved both problems.
Mar 2015 190000 mi US $40	The MAP (Manifold Absolute Pressure) sensor consistently read a low voltage, setting a diagnostic trouble code and turning on the "checking engine" light. Replacing the MAP sensor resolved the problem.
Jun 2015 195000 mi US $1045	Water pump was leaking coolant. Replaced water pump, coolant elbows, and coolant. $360 Intake manifold gaskets were leaking coolant. Replaced upper and lower intake manifold gaskets, EGR gasket, fuel injector o rings, thermostat, PCV valve kit, and coolant sensor. $605 Valve cover gaskets were leaking oil. Replaced these gaskets and grommets. $80
Oct 2015 200800 mi US $50	The struts holding up the trunk seemed weak in cold weather, so I replaced them.
Dec 2015 205000 mi US $50	A wire from the ABS controller to the right front wheel-speed sensor broke, disabling the ABS and causing the ABS telltale to light. Splicing in a replacement wire harness solved the problem.
Jan 2017 224371 mi US $12	Replaced dipstick for engine oil because the seal separated from the dipstick handle.
Mar 2017 227883 mi US $16	"Low washer fluid" warning was always displayed when the fluid was not low. Replaced the washer fluid sensor.
Apr 2017 230000 mi US $151	The stop on the right front seat belt broke off from the belt. (The stop prevents the seat belt from retracting all the way to the buckle.) Replaced the stop. Engine was leaking coolant from the water pump. Replaced the pump. One of the transmission cooler hoses was leaking. Replaced both hoses. Engine temperature rose quickly at times with the vehicle stopped, but engine never overheated. Replaced radiator, radiator cap and thermostat as a preventive measure. The engine coolant temperature does not seem to rise as quickly as it used to when the car is stopped, so I believe the problem is fixed.
Nov 2017 241525 mi US $20	Headlamp assemblies were cloudy due to UV light exposure. Sanded and polished each headlamp and added UV protectant.
Jan 2018 242522 mi US $43	Replaced both front hood struts because the old ones would no longer hold the hood up.
Feb 2018 246974 mi US $25	"Check gas cap" message appeared because the cap wasn't sealing properly. Replaced the gas cap.

Pontiac Grand Prix in Ontario, Canada Apr 2007 - Jul 2015
Sep 2007 37820 mi	Cabin air filter rain gutter fell off, required re-gluing. Symptom, water was entering the dash the passenger footwell, sloshing around, and adding humidity to the interior.
Nov 2011 56720 mi C $300	repaired the steering horn switch, the rear passenger door lock wiring. repaired the front sway bar links.
Oct 2013 65100 mi C $230	Horn stopped working again. Was a faulty connection behind the airbag.
Mar 2015 76880 mi C $341	repair leaking elbow on water pump

Pontiac Grand Prix in Pennsylvania, United States Jun 2010 - Jun 2011
Aug 2010 47000 mi US $50	Dexcool coolant turned into mud. Suspect possible intake gasket leak. Cleaned out system and monitoring for changes.

Pontiac Grand Prix in Connecticut, United States Mar 2011 - Sep 2011
Apr 2011 133000 mi US $110	Left rear power window motor and assembly needed to be replaced. Motor was in fact still working but window assembly included new motor as well as one part.

Pontiac Grand Prix in Washington, United States Dec 2012 - Aug 2015
Aug 2013 143000 mi US $17	Oil dipstick failed and left debris in oil system. Replaced dipstick and flushed and changed oil.
Sep 2013 144000 mi US $47	Replaced water pump due to leak not failure. The pump's cost was $27 on amazon plus I purchased an upgraded gasket for $10. I also replaced the accessory drive belt $19(Maintenance).
Jan 2014	Bolts in passenger side fog light failed resulting in failure to retain light
Jul 2014 154200 mi US $20	hood support strut was losing hydraulic fluid and was failing to work.
Jan 2015 148200 mi US $112	The battery went dead and Was replaced fixing the problem.

Pontiac Grand Prix in Virginia, United States Mar 2011 - Apr 2014
Jun 2012 121000 mi US $265	Replaced rear pads, discovered both rear calipers were leaking.
Jun 2013 132000 mi US $100	Replaced valve cover gaskets.

Pontiac Grand Prix in Massachusetts, United States Feb 2013 - Jul 2013
Mar 2013 188000 mi US $145	Had to replace the lower intake manifold gaskets. Common problem
Apr 2013 188800 mi	Had to change the rear pads due to the driver side caliper sticking and creating uneven wear.