2008 GMC Envoy Engine cooling Problems
- Complaints
- 8about this part
- Share
- 10%of 77 total for the year
- Median mileage
- 87,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 8 complaints about the engine cooling of the 2008 GMC Envoy, 10% of the 77 complaints for this model year. Where a mileage was given, the median is 87,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Gmc used cheap bolts on their v8 motor's exhaust manifolds. I have two broken bolts on one side and 1 on the other. Carr of vancouver gave me a quote of $ 2374.00 plus tax to fix this problem. They said it was a well known problem with all of the v8 motors by Gmc. I contacted Gmc and they refuse to do anything about this. I have researched it on the internet and there are hundreds of people who have had this same problem. The question isn't if this will happen to one of their vehicles but when it will happen. …”
NHTSA complaint #10633622, filed 2014-09, 118,106 miles“2008 Gmc Envoy 51,000 miles exhaust manifold cracked I had it replaced and was told by dealer a 3 day wait would be necessary as they had used stock parts on another Envoy with same problem . Advised me not to drive because it may catch fire.”
NHTSA complaint #10357666, filed 2010-09, 51,000 miles“Bought the vehicle last november from georgian pontiac buick Gmc in barrie ontario canada last november 2009. Learned I had a cracked exhaust manifold on my 2008 Envoy at 87 000 km. It has not yet been repaired. Research is ongoing.”
NHTSA complaint #10349800, filed 2010-08, 87,000 miles“I having problems with my stabilitrak system the engine lights comes on and I just had the thermostat sensors change which took them three time to find the problem and my drivers window sensors was replaced and there a sudden thumb when you brake as thought you have been hit from behind.”
NHTSA complaint #10296735, filed 2009-12“I purchased a 2008 Envoy denali 7/08 during the middle of november while drive the temp gage drop to the lowest point and started cutting off hesitating to start. I then contact on-star they stated it was the cooling system and should be taken to the dealer on 10/19/09 I went and was told it was the temp senor which was replace that tuesday. Thursday the same issue accord again I notified on-star they stated this time it was the transmission friday I went to the deal to be told they could not work on the car until monday. …”
NHTSA complaint #10290620, filed 2009-11Related service bulletins
- 10251890Mar 13, 2024This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank…
- 10250775Feb 22, 2024This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10250505Feb 7, 2024This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
- 10250347Feb 2, 2024This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and…
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
- 10244273Oct 6, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 10242843Sep 1, 2023The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 10242262Aug 24, 2023This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and…
- 10242061Aug 7, 2023This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
Engine cooling: other model years
Other parts of the 2008 GMC Envoy
18 complaintsExterior lighting
17 complaintsElectronic stability control
12 complaintsSuspension
7 complaintsBrakes
6 complaintsAir bags
5 complaintsOther or unknown
5 complaintsSeat belts
5 complaintsTransmission and drivetrain
5 complaintsEngine
4 complaintsSteering
3 complaintsVisibility (wipers, defrost, mirrors)
2 complaints
← All problems reported for the 2008 GMC Envoy
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology