2008 Chevrolet Avalanche Transmission and drivetrain Problems
- Complaints
- 4about this part
- Share
- 2%of 258 total for the year
- Median mileage
- 97,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the transmission and drivetrain of the 2008 Chevrolet Avalanche, 2% of the 258 complaints for this model year. Where a mileage was given, the median is 97,000 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.
“Problems with train mission. I'm a 75 year old driver. Bought Avalanche sly model. Great vehicle and driven easy and is garage kept. Have extended warranty from dealer. Transmission starting to bump as if you could have hiit a speed bump coming out of low into second. Was immediately taken to the dealership. They changed the wiring harness on the transmission. Said it seemed ok. As I picked up vehicle. The first traffic light caught and as I started up at a slow take off it was doing the same problem. Will return to dealership in the morning. Wiring harness fluid and filter change. …”
NHTSA complaint #10889139, filed 2016-07, 124,922 miles“While driving the truck,and stopping at a light or stop sign the truck slips out of gear and you have to put in park and then put it back in drive before it will move. It is scary when this happens because you are scared someone behind you won't be paying attention and rear end us”
NHTSA complaint #11129609, filed 2018-09, 97,000 miles“At 73000 miles transmission broke just a few months out of warranty. Also started experiencing excessive oil consumption and noisy engine. Have heard and read too many reports of people with the 5.3 liter having major mechanical problems I.e. Camshaft lifters piston rings and valves all going bad.”
NHTSA complaint #10607216, filed 2014-06, 73,000 miles“I've had my truck for 4 years now and its been in the shop 5 times due to transmission problems. I've gotten the transmission rebuilt 5 times and its still giving me problems. 6/2014- present day.”
NHTSA complaint #10955649, filed 2017-02Related service bulletins
- 11009088Sep 16, 2024This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be…
- 11006421Jul 24, 2024GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or…
- 11001321May 16, 2024This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- 11000119Apr 26, 2024This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- 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.
- 10248721Dec 18, 2023This bulletin advises the technician that the 6L50 (MYB), 6L80 (MYC) and 6L90 (MYD) Transmission Oil Filter and Seal Kit part number 24236933 is currently transitioning from a…
- 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…
- 10247768Sep 1, 2023This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at…
- 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…
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2013 | 1 | 1% |
| 2012 | 3 | 8% |
| 2011 | 9 | 7% |
| 2010 | 3 | 3% |
| 2009 | 1 | 1% |
| 2008 | 4 | 2% |
| 2007 | 13 | 3% |
| 2006 | 4 | 36% |
| 2005 | 9 | 13% |
| 2004 | 14 | 8% |
| 2003 | 14 | 7% |
| 2002 | 25 | 6% |
Other parts of the 2008 Chevrolet Avalanche
132 complaintsOther or unknown
54 complaintsBody and structure
44 complaintsElectrical system
21 complaintsEngine
15 complaintsLatches, locks and linkages
13 complaintsElectronic stability control
6 complaintsFuel system
6 complaintsSteering
6 complaintsSuspension
5 complaintsEngine cooling
4 complaintsVisibility (wipers, defrost, mirrors)
4 complaints
← All problems reported for the 2008 Chevrolet Avalanche
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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