2008 Pontiac G8 Pontiac G8 2008

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2008 Pontiac G8 repairs by problem area

Engine (20%)

Transmission and Drivetrain (4%)

Brakes and Traction Control (3%)

Suspension and Steering (34%)

Electrical and Air Conditioning (24%)

Paint, Rust, Leaks, Rattles, and Trim (8%)

Other (7%)

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Chart based on 111 repairs.
See TSBs and recalls for the 2008 Pontiac G8.

2008 Pontiac G8 electrical repair cost distribution

$2500+ (0%)

$1000 - $2499 (4%)

$500 - $999 (4%)

$100 - $499 (29%)

< $100 (63%)

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Chart based on 24 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2008 Pontiac G8 4dr Sedan

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

63000 mi

US $298
Battery needed replacement. 
17000 mi Multiplayer CD was not ejecting at #4 and #6. Player was replaced. 
21000 mi

US $270
Battery not holding a full charge. 
53000 mi

US $130
Battery not holding a charge. It was replaced. 
55000 mi

US $850
Instrument cluster went dark so there were no working gages. Entire instrument cluster had to be replaced and reprogrammed. 
110000 mi

US $60
Front passenger door lock would not unlock via remote unless button pressed several times. Common G8 problem according to forums. Replaced with new lock mechanism. Rear passenger door lock would not unlock via remote unless button pressed several times. Common G8 problem according to forums. Replaced with new lock mechanism. Rear driver door lock would not unlock via remote unless button pressed several times. Common G8 problem according to forums. Replaced with new lock mechanism. 
103000 mi

US $450
Starter died, replaced starter. I don’t recommend aftermarket starters, very loud and thrashing sounding. Go with New OE equipment. 
46000 mi

US $400
System needed to be purged. New refrigerant and shrader valves 
111 mi Trunk remote unlock would not work. ELECTRIC TRUNK RELEASE MAKES STRANGE SOUND WHEN BEING ACTIVATED. MANUAL RELEASE WORKS FINE. 
35740 mi Airbag light on after recall program installed 
5000 mi The only repair the car had was the trunks secondary actuator failed, causing the trunk to buzz very loudly when you opened it.  
15000 mi CD player stopped working, fault listed as mechanism error. Dealership reprogrammed and updated software on computer problem fixed. 
8300 mi Driver's door lock problem, not always locking. 
10000 mi Driver's power door lock not properly unlocking 
10000 mi door lock actuator replaced 
56000 mi

US $1000
Leak in aluminum line and compressor 
22000 mi My glove box and trunk lights didn't work, neither did the vanity mirror lights. Glove box and trunk fixed with a fuse, vanity mirror lights needed wiring checked. 
37000 mi Faulty TPMS sensor was causing error message. TPMS sensor replaced, no errors since. 
190000 mi

US $200
Tire pressure monitoring system 

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2008 Pontiac G8 4dr Sedan

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

31000 mi Rear door lock actuator freezing up on rear passenger side, new actuator put in. Rear driver side starting to act up now. 
32000 mi Repaired Driver Rear Door Lock Actuator, finally was cold enough to seize up. 
3000 mi Problems with the remote start range. Have to get right up close to vehicle. Replaced fob ...still have the same problem. 
5000 mi Problems with the remote start range. 
64000 mi

US $250
Side Mirror Controller did not move the mirrors. 

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2008 Pontiac G8 Electrical Problems

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 2008 Pontiac G8 problems occur, check out our car reliability stats.