| 1 | 0 | 3 | 4 | 3 | 4 |
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%)
Chart based on 111 repairs.
2008 Pontiac G8 repair cost distribution
$2500+ (3%)
$1000 - $2499 (3%)
$500 - $999 (9%)
$100 - $499 (30%)
< $100 (53%)
Chart based on 86 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2008 Pontiac G8
Engine not specified
| Pontiac G8 in California, United States Jun 2017 - Jun 2017 | |||
| Jun 2017165000 miUS $800 | Check engine light for air/fuel mixture...lean code | ||
| Pontiac G8 in Oklahoma, United States Nov 2008 - Sep 2012 | |||
| Dec 20081000 mi | Bad front right strut bearing. | ||
| Mar 201224000 miUS $3000 | Ball joints and tie rod ends wore out | ||
2008 Pontiac G8 4dr Sedan
361-horsepower 6.0L V8 6-speed shiftable automatic RWD
| Pontiac G8 in Iowa, United States Dec 2011 - Jun 2018 | |||
| Jan 201263000 miUS $298 | Battery needed replacement. | ||
| Pontiac G8 in Oregon, United States Mar 2014 - Dec 2015 | |||
| Nov 201584000 miUS $180 | Power Door Locks have been a continual problem in last year - locks are slow and sometimes do not lock, however fuel gate is also tied to door locks (external opening of fuel access gate)which will not open if lock is engaged. | ||
| Pontiac G8 in Michigan, United States Mar 2011 - Oct 2013 | |||
| Jul 201127000 miUS $60 | Gasket for the axle back system failed causing a severe leak and carbon monoxide(exhaust fumes) could be smelled heavily inside the car when stopped ie warming up, stop light, idling while parked. | ||
| Apr 201238700 miUS $89 | Bent front sway bar end links, replaced links | ||
| Oct 201359000 miUS $3500 | Catastrophic valve train failure | ||
| Pontiac G8 in Massachusetts, United States Mar 2011 - May 2014 | |||
| Jun 201128000 miUS $100 | Loose end link, that keeps getting loose. | ||
| Jun 201230000 miUS $200 | Broken tie-rod end and control arms are getting loose also. | ||
| Pontiac G8 in Illinois, United States Mar 2008 - Sep 2011 | |||
| Oct 200916000 mi | Defective valve spring replaced. Sounded horrible, like it was having a really hard time running, as if not getting enough air. Even died on me several times (during my troubleshooting, I wasn't driving it after the initial "Check Engine" light came on). Defective valve spring replaced again the next day while visiting family, so second dealer. First dealer had left piece of plastic, approximately 2 in x 1/2 in, underneath the valve spring, causing it to bend and therefore malfunction. | ||
| Nov 200917000 mi | Valve spring broke, also causing the #7 intake runner to have a leak. Everything was fixed under warranty. | ||
| Pontiac G8 in Illinois, United States Sep 2010 - Jun 2022 | |||
| Apr 201117000 mi | Multiplayer CD was not ejecting at #4 and #6. Player was replaced. | ||
| Dec 201121000 miUS $270 | Battery not holding a full charge. | ||
| Jul 201541000 miUS $205 | Broken hood release cable and hood latch was replaced. | ||
| Apr 201748000 mi | Front lower control arm ball joints were replaced after rattle was heard. Cost was covered in full by Special coverage adjustment number 15289 by GM. | ||
| Feb 201853000 miUS $130 | Battery not holding a charge. It was replaced. | ||
| Mar 201955000 miUS $850 | Instrument cluster went dark so there were no working gages. Entire instrument cluster had to be replaced and reprogrammed. | ||
| Jun 202259000 miUS $250 | Noticed a knocking or banging in the rear end, especially on bumpy roads. Sway bars were replaced. | ||
| Pontiac G8 in Pennsylvania, United States Jun 2014 - Dec 2016 | |||
| Apr 201595200 miUS $100 | Clunk/knock from front when under 30mph. Replaced sway bar bushings and sway bar end links | ||
| Dec 2015110000 miUS $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. | ||
| Pontiac G8 in Ohio, United States May 2015 - Dec 2022 | |||
| Jul 201647500 mi | Control arm & ball joint boot. Repaired under GM special coverage program at no cost. | ||
| Feb 201756000 mi | Control arm. Repaired under GM special coverage program at no cost. | ||
| Oct 201763000 mi | Lower control arm. Dealer replaced it in February at no charge under GM's service extension program for this problem on this vehicle, and it went bad again. Repaired again at no charge. | ||
| Pontiac G8 in Wisconsin, United States Apr 2011 - Apr 2015 | |||
| Jan 201132000 miUS $250 | Linkage between shift lever and transmission became loose and disconnected. Simple fix at the dealer under warranty. | ||
| Mar 201465000 mi | Sunroof rattling, haven't fixed yet. Have tried many fixes, nothing has worked yet. | ||
| Nov 201455000 miUS $250 | Transmission slipping slightly, replaced fluid & trans filter. Problem solved. | ||
| Pontiac G8 in North Carolina, United States Mar 2013 - Sep 2018 | |||
| Jan 2018103000 miUS $450 | Starter died, replaced starter. I don’t recommend aftermarket starters, very loud and thrashing sounding. Go with New OE equipment. | ||
| Pontiac G8 in Florida, United States Jul 2013 - Jun 2022 | |||
| May 201736000 miUS $150 | Headliner needed to be re-covered due to age related issues. It separated from the backing due to age and heat. I removed it last fall and had a local shop replace the covering. I then installed it this spring when the car came out of storage. 2 hrs out and 2 hrs in. No other parts needed replacing. | ||
| Jun 202146000 miUS $400 | System needed to be purged. New refrigerant and shrader valves | ||
| Pontiac G8 in Florida, United States Oct 2009 - Sep 2013 | |||
| Jan 20095000 mi | Warranty repair- Transmission interlock froze, console cover plate replaced after a release pin was pulled by the dealer. Transmission was not able to be taken out of Park but steering was not locked. | ||
| Pontiac G8 in Michigan, United States - Jul 2009 | |||
| Sep 20085896 mi | Trans ECU reflash, bulletin #080730036 | ||
| Jun 200924369 mi | Susp: Lf & Rt upper strut mounts failed, replaced. Recalls: TPMS re-flash; brake switch flash. | ||
| Jul 200926809 mi | Susp: Rt front upper control arm failed, replaced. | ||
| Pontiac G8 in Texas, United States Nov 2009 - Nov 2013 | |||
| Jun 201147000 mi | Pulled a P0445 and P0449 code. Replaced gas cap for P0455 and replaced EVAP canister/solenoid for P0449. No issues since. | ||
| Pontiac G8 in Ontario, Canada Jul 2010 - Jul 2012 | |||
| Apr 201126660 mi | Paint flaking from steering wheel trim. Dealer replaced the trim under warranty. Parts arrived in 1 week. | ||
| Nov 201133060 miC $125 | seat trim fell off | ||
| May 201235740 mi | Airbag light on after recall program installed | ||
| Jun 201237200 mi | Noise in front end ..tech suspected lower control arms | ||
| Pontiac G8 in Ohio, United States Jul 2008 - Nov 2011 | |||
| Jun 20098000 mi | Engine oil leak. | ||
| Jun 201115000 mi | CD player stopped working, fault listed as mechanism error. Dealership reprogrammed and updated software on computer problem fixed. | ||
| Pontiac G8 in Michigan, United States Oct 2008 - Mar 2010 | |||
| Apr 20095500 mi | Engine replaced due to piston slap. | ||
| Jun 20098000 mi | Front lower control arms replaced due to faulty ball joints making noise. | ||
| Pontiac G8 in New York, United States Jan 2009 - Mar 2013 | |||
| Jun 20095000 mi | Clunk in front end, There is a TSB for replacing front sway bar bushing. That has fixed the issue. | ||
| May 201016000 mi | Replaced all 4 lower control arms due to a clunk going over bumps | ||
| Pontiac G8 in New York, United States Aug 2008 - Oct 2010 | |||
| Aug 20098000 mi | car creaked when going over uneven surface. dealer said it was front right bushing which they ordered and call me when in right rear brake noise-not rotor or brake--metal around rotor bent to stop rubbing | ||
| Feb 201013000 mi | all ok-professional dealer, bushing repaired | ||
| Jun 201015000 mi | front end noise | ||
| Aug 201016200 mi | repaired right control arm last summer--now left control arm-bulletin states to replace front end pieces and align -ordered parts as per dealer | ||
| Pontiac G8 in South Dakota, United States Apr 2008 - May 2011 | |||
| Aug 20084000 mi | Hesitation when taking off...fixed with transmission computer flash update. | ||
| Feb 20097000 mi | Noticed a rattle in front suspension. Deemed normal by tech. | ||
| Jun 201018000 mi | driver's side lower front control arms replaced due to premature wear. | ||
| Pontiac G8 in California, United States Mar 2008 - Sep 2014 | |||
| May 201233000 miUS $100 | Passenger from door handle needed to be replaced under warranty due to chrome peeling off. | ||
| Pontiac G8 in Michigan, United States Mar 2008 - May 2009 | |||
| May 2008111 mi | Trunk remote unlock would not work. ELECTRIC TRUNK RELEASE MAKES STRANGE SOUND WHEN BEING ACTIVATED. MANUAL RELEASE WORKS FINE. | ||
| Pontiac G8 in Arkansas, United States Feb 2009 - Oct 2009 | |||
| Sep 20095000 mi | The only repair the car had was the trunks secondary actuator failed, causing the trunk to buzz very loudly when you opened it. | ||
| Pontiac G8 in New York, United States Feb 2009 - Mar 2010 | |||
| Aug 200921000 miUS $825 | thumping noise caused by improperly lubed front end suspension weather-stripping clips from drivers side door bent. Dealer replaced them. | ||
| Pontiac G8 in Kansas, United States Aug 2009 - Jul 2022 | |||
| Dec 200922000 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. | ||
| Dec 201037000 mi | Faulty TPMS sensor was causing error message. TPMS sensor replaced, no errors since. | ||
| Nov 201148000 mi | Rattling cold transmission fixed with TCU and ECU update. | ||
| Apr 2022190000 miUS $200 | Tire pressure monitoring system | ||
| Pontiac G8 in New York, United States Sep 2009 - Apr 2017 | |||
| Nov 20098300 mi | Driver's door lock problem, not always locking. | ||
| Mar 201010000 mi | Driver's power door lock not properly unlocking Evap leak indicated, check engine light cleared, has not come back in 4 weeks. | ||
| May 201010000 mi | door lock actuator replaced | ||
| Jun 201011000 mi | replaced fuel cap due to EVAP leak | ||
| Jan 20119800 mi | Transmission went into limp mode with MIL illuminated. No problem found after reset. | ||
| Mar 201114000 mi | looses antifreeze every 6 months or so, second time needed to refill, no leak found. | ||
| Mar 201430000 miUS $150 | Hood release cable broke | ||
| Jul 201434200 miUS $100 | sway bar end links replaced. | ||
| Aug 201434900 miUS $700 | front tie rods replace, rear set (car has 2 sets per front wheel) | ||
| Aug 201545000 miUS $700 | Replaced Lower control arms | ||
| Jun 201656000 miUS $1000 | Leak in aluminum line and compressor | ||
2008 Pontiac G8 4dr Sedan
256-horsepower 3.6L V6 5-speed shiftable automatic RWD
| Pontiac G8 in Michigan, United States Nov 2010 - Apr 2011 | |||
| Dec 201057000 mi | CEL, stretched timing chain. TC replaced by dealer. TSB lower control arms for 2nd time (no cost) as 1st replacement (32,000mi) did not use new part and rattling again over bumps. N.B New part released by OEM to better cope with salted roads and cold weather. Key fob rubber buttons completely disintegrated after 20 months. | ||
| Pontiac G8 in Michigan, United States Sep 2009 - Apr 2016 | |||
| Oct 200920000 mi | Faulty control arms replaced under warranty. | ||
| Mar 201032000 mi | replacement of door strikers on drivers door, and passenger rear door. | ||
| Apr 201035000 mi | replacement of door strikers in drivers door and passenger rear. | ||
| Feb 201161300 miUS $20 | Truck latch mechanism (with actuator) purchased by owner and installed by owner. | ||
| Jun 201173000 mi | Service engine soon came on for emission issue. This was due to a faulty gas cap. This was previously replaced, but found the replacement was the INCORRECT gas cap! Dealer also cleared the service engine code. | ||
| Apr 2013100000 miUS $500 | Control arm replacement, upper and lower | ||
| Sep 2015126000 miUS $250 | Upper and lower control arm replacement in concert with coilover install. Issue found with lower control arms that was making clunking noise. | ||
| Pontiac G8 in Wisconsin, United States Apr 2010 - Mar 2014 | |||
| Jul 201337500 miUS $800 | replace rear rotors, calipers, pads, rear brakes | ||
| Pontiac G8 in Texas, United States Sep 2010 - Jun 2011 | |||
| Mar 201147000 miUS $88 | Engine light went on. Was able to quickly fix the gas cap problem. | ||
| Pontiac G8 in Ohio, United States Sep 2008 - Jun 2009 | |||
| Feb 20093000 mi | Problems with the remote start range. Have to get right up close to vehicle. Replaced fob ...still have the same problem. | ||
| Jun 20095000 mi | Problems with the remote start range. Upper and lower control arms! | ||
| Pontiac G8 in Michigan, United States Aug 2011 - Nov 2019 | |||
| Dec 201275000 mi | Engine Timing Chain. The chain was stretched and needed to be replaced. Was under warranty. | ||
| Jan 2013US $250 | Side Mirror Controller did not move the mirrors. | ||
| Feb 201379000 mi | Ignition key was worn out causing the the key to not turn to the off position to remove the key. Currently using the sapre key and have had no issues. | ||
| Nov 2016146700 miUS $129 | Replaced interior door latch mechanism, original lever broke. | ||
| Dec 2016151000 miUS $3000 | Timing chain needed to be replaced. Second time this has occurred, last time it was under warranty at 70k miles. Needed new front pads as they broke off from caliper. Replaced caliper and pads. Also flushed beak line. | ||
| Pontiac G8 in Iowa, United States Apr 2011 - Aug 2013 | |||
| Nov 201131000 mi | Rear door lock actuator freezing up on rear passenger side, new actuator put in. Rear driver side starting to act up now. | ||
| Dec 201132000 mi | Repaired Driver Rear Door Lock Actuator, finally was cold enough to seize up. | ||
| Dec 201245000 miUS $294 | Hood Release Cable broke. Common issue on G8's in Northern states. | ||
| Pontiac G8 in Illinois, United States Jun 2010 - Mar 2012 | |||
| Aug 201021000 mi | Clunking noise in Right front when hitting bumps. | ||
2008 Pontiac G8 4-door
6-cylinder automatic 2WD
| Pontiac G8 in California, United States Jan 2012 - Nov 2015 | |||
| Dec 201360000 miUS $125 | Passenger side tie rods, control arm, radius arm worn producing a shake when turning and braking. All were replaced. | ||
| Aug 201469700 miUS $2400 | Inner and outer tie rods replaced on driver side. Timing chain stretched. Timing chains replaced. | ||
| Sep 201580000 miUS $60 | Rear wheel bearing replaced due to noise and alignment off. 2nd wheel bearing replaced due to residual noise. Replaced sway bar end links due to noise on bumps. | ||
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See TrueDelta's information for all Pontiac models.
