2003 Chevrolet Blazer power train problems
12 owner complaints filed with NHTSA name the power train on the 2003 Chevrolet Blazer — 16% of all complaints for this model year.
What owners report
“We bought a 2003 chevy blazer in july 2006 with 18,700 miles. When in cruise control at highway speed, the transmission will downshift into 2nd gear instead of 3rd gear to maintain speed up a slight incline. This has happened numerous times since purchase. *nm”
filed Oct 22, 2006
“I brought the vehicle on october 04, 2005. I have many problems with this vehicle. I don't even know what to do anymore. I have contacted the dealership plenty of times but they are no help at all. The vehicle has a transmission problem. I have taken I it to the mechanic but they haven't been any…”
filed Mar 8, 2006
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
GM 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 inadequate packaging or shipping. This…
24-NA-141 · Service Bulletin/Repair Instructions · issued Jul 24, 2024
Power Train problems in other Blazer years
| Year | Reports | Share |
|---|---|---|
| 2024 Blazer | 6 | 14% |
| 2023 Blazer | 10 | 25% |
| 2022 Blazer | 10 | 23% |
| 2021 Blazer | 18 | 14% |
| 2020 Blazer | 71 | 34% |
| 2019 Blazer | 62 | 34% |
| 2004 Blazer | 4 | 8% |
| 2002 Blazer | 33 | 13% |
| 2001 Blazer | 31 | 10% |
| 2000 Blazer | 84 | 14% |
| 1999 Blazer | 54 | 12% |
| 1998 Blazer | 74 | 10% |
Other reported problem areas on the 2003 Chevrolet Blazer
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.