2004 Chevrolet Blazer Transmission and drivetrain Problems
- Complaints
- 4about this part
- Share
- 8%of 50 total for the year
- Median mileage
- 69,662miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the transmission and drivetrain of the 2004 Chevrolet Blazer, 8% of the 50 complaints for this model year. Where a mileage was given, the median is 69,662 miles. 1 of these say a crash was involved, according to the filers.
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.
“Got into the vehicle in the morning and when I placed it into reverse I heard a loud shattering noise and the car would not back up. I had it towed to the transmission shop and they reported that the sun gear had shattered with a repair cost of 2300.00. They also told me that this is a very common problem with GM transmissions due to a weak gear from the manufacturer. After researching it on line I am finding many other people with the same problem. The GM customer rep was very short and stated that the car was out of warranty and I have no claim. …”
NHTSA complaint #10557986, filed 2013-12, 200,000 miles“Car started making a rattling noise when I turned to the right shortly after having a spring replaced in drivers side front tire. Within a week the rattling progressed to a grinding. Dealership refused to look at it, knowing I was about to go on a long trip. I left for my trip (9 hour drive) after about 5 hours, this grinding noise was constant, then ABS light came on, started messing with my steering, then, while trying to get to a dealership in the closest city ( still an hour away from my destination) tire broke off at the bearings while driving down a major 4 lane highway. …”
NHTSA complaint #10167095, filed 2006-08, 27,323 miles“In a 2004 chevy Blazer, 20000 miles. 4 wheel drive front differential actuator failed to engage. Upon inspection it was determined that the actuator had corroded to the point that it need to be replaced. The first replacement part also failed shortly after being connected and a third part needed to be ordered. All replacements were conducted by manufacturer.”
NHTSA complaint #10116463, filed 2005-04, 20,000 miles“The contact owns a 2004 Chevrolet Blazer. When the gear was shifted into reverse, the vehicle would not move. The dealer stated that the failure was caused by a faulty sun gear. The transmission needed to be replaced in order to repair the failure. No repairs were made. The current and failure mileages were 112,000.”
NHTSA complaint #10217382, filed 2008-02, 112,000 milesRelated service bulletins
- 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…
- 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…
- 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…
- 10222770Sep 16, 2022This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
- 10224273Sep 1, 2022This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the…
- 10220319Sep 1, 2022This diagnostic tip advises the tech not to separate the flexplate from the torque convertor or damage my occur if the engine is started while diagnosing for noise from the…
- 10143757Jul 9, 2018This Preliminary information communicates to the dealer technician thatLight Duty Trucks equipped with automatic transmissions and 4 wheel drive may exhibit a condition of…
- 10096073Feb 17, 2016This preliminary information communication provides information to the technician about vehicle that after a transmission or torque converter replacement the vehicle may have a…
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 8 | 15% |
| 2023 | 10 | 23% |
| 2022 | 12 | 22% |
| 2021 | 19 | 13% |
| 2020 | 75 | 33% |
| 2019 | 64 | 34% |
| 2004 | 4 | 8% |
| 2003 | 12 | 16% |
| 2002 | 33 | 13% |
| 2001 | 31 | 10% |
| 2000 | 84 | 14% |
| 1999 | 54 | 12% |
| 1998 | 74 | 10% |
| 1997 | 110 | 14% |
| 1996 | 96 | 8% |
| 1995 | 68 | 6% |
| 1994 | 12 | 2% |
| 1993 | 19 | 4% |
| 1992 | 3 | 1% |
| 1991 | 8 | 4% |
| 1990 | 3 | 9% |
| 1989 | 1 | 3% |
| 1988 | 2 | 5% |
| 1987 | 4 | 13% |
| 1986 | 1 | 5% |
| 1985 | 4 | 14% |
Other parts of the 2004 Chevrolet Blazer
10 complaintsBrakes
7 complaintsBody and structure
6 complaintsSuspension
6 complaintsEngine cooling
4 complaintsSteering
4 complaintsAir bags
3 complaintsTires
3 complaintsExterior lighting
2 complaintsLatches, locks and linkages
2 complaintsSeat belts
2 complaintsVehicle speed control
2 complaints
← All problems reported for the 2004 Chevrolet Blazer
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