Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
ENGINE AND ENGINE COOLING
PIP-4138K01/01/201110037933Ready06/08/2011
PIP-4568K01/01/201110037941Gm: service engine soon light is on with a misfire and a possible tick noise. *rm06/08/2011
PIP-4138K01/01/201110037933Gm: the service engine soon light is on, there is also a misfire or engine noise. there are multiple possible causes. *rm06/08/2011
PIP-4568K01/01/201110037941Ready06/08/2011
ENGINE AND ENGINE COOLING - ENGINE
11-06-04-007B04/01/201210044229Gm: diagnosis and repair- malfunction indicator lamp illuminated, reduce engine power message displayed, dtc p2135 set. also included model sierra denali year 2010-2011 *js05/23/2012
SB-09-06-04-02505/01/200910030725Saab/hummer/gmc/chevrolet: malfunction indicator lamp (mil) illuminated, dtcs p0300-p0306, engine runs rough (inspect for water intrusion in spark plug recess area, replace spark plug and ignition coil, seal ignition coil bolt hole vents a11/23/2009
ENGINE AND ENGINE COOLING - ENGINE - DIESEL
PIP-4574M08/01/201010036485Buick/chevrolet/gmc/pontiac/saab: excessive oil consumption and/or blue exhaust smoke-investigation update. in most cases did not start until the engine accumulated approximately 30,000 miles or more. *pe03/21/2011
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
PIP-4574M08/01/201010036485Buick/chevrolet/gmc/pontiac/saab: excessive oil consumption and/or blue exhaust smoke-investigation update. in most cases did not start until the engine accumulated approximately 30,000 miles or more. *pe03/21/2011
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - MANIFOLD/HEADER/MUFFLER/TAIL PIPE
SC-1115007/01/201110040504Ready08/31/2011
SC-1115007/01/201110040504Gm service campaign: see document search button for owner letter. 2008-2009 trailblazer/envoy. the vehicles may develop a crack in the exhaust manifold. it could result in increased exhaust noise. *rm08/31/2011

Consumer Complaints


Fail datemilesoccurencesPurchase date
ENGINE
12/19/201218000
 Tl- the contact owns a 2008 chevrolet trailblazer. the contact attempted to start the vehicle but failed to do so. the vehicle was towed to the dealer for inspection and they stated that the alternator was over charging and needed to be replaced. the vehicle was not repaired. the manufacturer was notified but provided no assistance. the failure mileage was 18,000. mah
12/19/2012180000
 Tl- the contact owns a 2008 chevrolet trailblazer. the contact stated that she attempted to start the vehicle but it would not start. the contact had the vehicle towed to the dealer for inspection and they stated that the alternator was over charging and needed to be replaced. the vehicle was not repaired. the manufacturer was notified but provided no assistance. the failure mileage was 18,000. ap
09/22/201275000
 Tl* the contact owns a 2008 chevrolet trailblazer. the contact stated that after engine startup, the exhaust became abnormally loud. the vehicle was taken to a private mechanic who confirmed that the exhaust manifold was cracked and needed to be replaced. the manufacturer was not made aware of the failure. the vehicle was not repaired. the failure mileage was 75,000 and the current mileage was 76,000.
09/22/201275000
 Tl- the contact owns a 2008 chevrolet trailblazer. the contact stated that after engine startup, the exhaust became abnormally loud. the vehicle was taken to a private mechanic who confirmed that the exhaust manifold was cracked and needed to be replaced. the manufacturer was not made aware of the failure. the vehicle was not repaired. the failure mileage was 75,000 and the current mileage was 76,000. kmj
09/22/201275000
 Tl- the contact owns a 2008 chevrolet trailblazer. the contact stated after engine startup the exhaust was loud. the vehicle was taken to a private mechanic.the mechanic confirmed the exhaust manifold was cracked and needed to be replaced. the manufacturer was not made aware of the failure. the vehicle was not repaired. the failure mileage was 75,000 and the current mileage was 76,000. rds
08/12/201293000
 Tl-the contact owns a 2008 chevrolet trailblazer. the contact stated that while starting the vehicle, the intake manifold cracked. the contact did not take the vehicle to a dealer or a mechanic for inspection or repairs. the contact did not call the manufacturer. the failure mileage was 93,000. kmj
08/12/201293000
 Tl-the contact owns a 2008 chevrolet trailblazer. the contact stated while starting the vehicle the intake manifold cracked. the contact did not take the vehicle to a dealer or local mechanic. the contact did not call the manufacturer. the failure mileage was 93,000. jo
ENGINE AND ENGINE COOLING
03/16/2012111/01/2011
 2008 chevrolet trailblazer failure to start after a failure in engine run during entry to highway. *bf
04/09/201258000
 The exhaust manifold has cracked with only 58,000 miles
11/01/201188500
 Tl- the contact owns a 2008 chevrolet trailblazer. the contact stated that the vehicle stability and tire pressure warning lights were illuminated. in addition, the contact also experienced engine failures as well as the illumination of the check engine warning light that was causing a hesitation in the vehicle. the contact diagnosed and repaired the temperature gauge as well as updated the vehicle software. the failure mileage was 87,000 and the current mileage was 88,500. the vin was not available. kmj
11/01/201188500
 The contact owns a 2008 chevrolet trailblazer. the contact stated that the vehicle stabilizing, and the tire pressure, lights illuminated. the contact t performed a diagnosed that located failure codes. the contact was able to clear the stabilizer and tire pressure codes by updating the vehicle software. the vehicle also experienced failure with the engine, the engine light illuminated, and caused the vehicle to hesitate while driving. the contact performed a diagnostic, and replaced the temperature gauge. the vehicle was repaired. the failure mileage was 87,000 and the current mileage was 88,500. li
01/02/201252500
 Tl- the contact owns a 2008 chevrolet trailblazer. the contact stated that the service stabilizer warning light would illuminate sporadically. neither the dealer nor the manufacturer were notified of the failure. the vehicle was not repaired. the failure mileage was 52,500 and the current mileage was 54,000. kmj
01/02/201252500
 Tl- the contact owns a 2008 chevrolet trailblazer. the contact stated that the service stabilizer warning light would illuminate on the instrument panel of the vehicle. neither the dealer nor the manufacturer were notified of the failure. the vehicle was not repaired. the failure mileage was 52,500 and the current mileage was 54,000. nw
12/09/201155000
 With only 55,000 miles, the exhaust manifold cracked. seeing all of the complaints online and talking to my mechanic, this seems to be a default part. chevy should be recalling these. my mechanic had to order the part through the dealer and they had the replacement manifold in stock. exhaust manifolds are not normally stock items unless there is a real high need to replace them.......
06/01/20086000
 Tl*the contact owns a 2008 chevrolet trailblazer. the contact stated the voltage regulator was corroded and caused the brake light unit on the rear driver's side to also corrode. the vehicle was taken to an authorized dealer where the sockets were replaced but the failure recurred. the vehicle was taken to a second dealer where the alternator was replaced. the failure continued. the vehicle was then taken to a third dealer where it was awaiting repairs. the manufacturer was made aware of the failure when the contact notified them to file a complaint. the failure mileage was 6,000 and the current mileage was 50,000.
06/01/20086000
 Tl- the contact owns a 2008 chevrolet trailblazer. the contact stated that the voltage regulator had corroded, causing the brake light unit in the rear driver side to corrode. the dealer replaced the sockets;however, the regulator corroded again. the vehicle was taken to a second dealer who replaced the alternator, which did not correct the failure. the vehicle was at a third dealer awaiting repairs. the manufacturer took a complaint on the contacts behalf. the current mileage was 50,000 and the failure mileage was 6,000. bw
ENGINE AND ENGINE COOLING - ENGINE
10/29/201056000
 The gm ls2 engine installed in the trailblazer ss models has a known oiling issue which causes the engine to be starved for oil and thus, spins a rod bearing. being that the trailblazer ss is a limited production vehicle, gm hasn't lifted a finger to recall or repair this design flaw. the problem only exists in the trailblazer ss (not corvette or gto to my knowledge) due to a problem with the oil pan.
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
07/06/201189101
 2008 trailblazer with a cracked exhaust manifold.
04/24/201062000
 2008 chevy trailblazer cracked exhaust manifold at 62,000 miles quoted that the repair would be $600-700. after doing research there are many occurrences of this problem when will there be a recall on this bad manifold???
10/30/201063000
 2008 chevrolet trailblazer ls with 63,000 miles developed a cracked exhaust manifold. i have read several similar incidents online. gm should look into a recall.
08/20/201050000
 Hello, i'm sure you've heard many complaints of cracked exhaust manifold on gmc suv's. i have one and have been reading way too many posts online about the same issue. this is caused by what 2 mechanics say is a bad design and cheap parts. for a $30+ truck, this is not acceptable. i have a 2008 trailblazer lt, with 50k miles. the cost to fix is averaged at around $600-$700!!!!! many have to try and tackle this project on their own since that type of money isn't really just laying around for most people and what happens is broken bolts and then a whole seperate issue. also been problems with o2 sensors because of the leak, seems this problem can lead to many other problems if not fixed immediately. i truly believe that this problem is a factory/manufacturer defect and should be taken care of, at no cost to me or anyone else for that matter. or i should be reimbursed for money i need to spend toward fixing it since i can't afford to not have it in driving condition. prompt action to this complaint would be greatly appreciated. thank you. still a true gm believer!!!! but could really use some help here as many others do.
02/01/20101
 I have a 2008 trail blazer ad the exhaust manifold has a big crack in it. this trial blazer is not that old. to me this seems be a manufacturing defect. please advise . *tr
11/28/2009426271
 2008 chevy trailblazer 42,000 miles had to have the manifold replaced as the entire manifold was split around the entire pipe. *tr