2004 Chevrolet Blazer Electrical system Problems
- Complaints
- 10about this part
- Share
- 20%of 50 total for the year
- Median mileage
- 24,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 10 complaints about the electrical system of the 2004 Chevrolet Blazer, 20% of the 50 complaints for this model year. Where a mileage was given, the median is 24,000 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.
“2004 trailblazer ls faulty speedometer. The speedometer started action g up one day when I was going 50mph, the speedometer went up to 100mph by itself. Ever since then is has been reading whatever it wants. I have also heard a strange noise from my other gauges on my panel. I took it into a dealership and had a diagnostics run on the SUV. They stated I had a faulty speedometer and it would run about $600.00 to fix. They stated GM had a recall notice out on a number of vehicles with the same problem, but the 2004 Blazer didn't fall under this notice. …”
NHTSA complaint #10254201, filed 2009-01, 58,289 miles“2004 Chevrolet Blazer. Consumer writes in regards to vehicle ignition switch problems. The consumer stated the ignition was fixed 3 different times. The vehicle had to be towed, because it would not start, due to the faulty ignition cylinder would not turn. In november 2013, the vehicle would not go into neutral or park and the vehicle could not be turned off. Per the mechanic, the ignition lock cylinder came apart, again and it had to be replaced. The mechanic stated the problem was due to a heavy key chain. …”
NHTSA complaint #10575578, filed 2014-03, 12,400 miles“While driving at 65 MPH the the service engine light and emergency brake light came on. Then the odometer and speedometer stopped working. When I stopped at a stop sign it was almost impossible to get the vehicle to accelerate. Pushing the accelerator pedal just caused the engine to race. This is the second time this has occurred. It first occured on may 20, 2004. The car was towed to a dealer who could find no problem.”
NHTSA complaint #10079243, filed 2004-07, 3,222 miles“The contact owns a 2004 Chevrolet Blazer. While driving 55 MPH, the speedometer dial indicated that the contact was driving 110 MPH. When she stopped at a red light, the speedometer dial suddenly dropped below zero and is currently hanging straight down. The dealer has not been notified. The failure and current mileages were 24,000.”
NHTSA complaint #10225445, filed 2008-04, 24,000 miles“The contact owns a 2004 Chevrolet Blazer. While driving 60 MPH the vehicle automatically brakes abruptly. This failure occurred seven times. The mechanic stated that the fuel could be the cause of the failure. Another failure was what the mechanics called surging. She stated that the vehicle automatically surged with speed when accelerating from a stop. In addition, the contact experienced an electric shock from the steering wheel that also shocked her feet. The mechanic confirmed this failure. …”
NHTSA complaint #10189668, filed 2007-05, 6,000 milesRelated service bulletins
- 11009156Oct 25, 2024This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester…
- 11006621Aug 26, 2024Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which…
- 11002312Jun 6, 2024This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414…
- 10252735Mar 28, 2024This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
- 10244214Sep 21, 2023This informational bulletin provides information for the IPC odometer programming method quick reference guide.
- 10225615Oct 19, 2022This service bulletin provides information on Module Harvesting.
- 10198890May 25, 2021This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or…
- 10176649May 20, 2020This informational bulletin provides information for the IPC odometer programming method quick reference guide.
- 10171318Jan 31, 2020This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester…
- 10167434Oct 10, 2019This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 11 | 32% |
| 2024 | 7 | 13% |
| 2023 | 7 | 16% |
| 2022 | 20 | 37% |
| 2021 | 40 | 28% |
| 2020 | 78 | 35% |
| 2019 | 62 | 33% |
| 2008 | 1 | 20% |
| 2006 | 2 | 11% |
| 2005 | 4 | 27% |
| 2004 | 10 | 20% |
| 2003 | 9 | 12% |
| 2002 | 21 | 9% |
| 2001 | 40 | 12% |
| 2000 | 49 | 8% |
| 1999 | 40 | 9% |
| 1998 | 71 | 10% |
| 1997 | 89 | 12% |
| 1996 | 62 | 5% |
| 1995 | 70 | 6% |
| 1994 | 10 | 2% |
| 1993 | 17 | 3% |
| 1992 | 18 | 6% |
| 1991 | 16 | 7% |
| 1990 | 4 | 13% |
| 1989 | 6 | 16% |
| 1988 | 5 | 13% |
| 1986 | 1 | 5% |
| 1985 | 1 | 3% |
Other parts of the 2004 Chevrolet Blazer
7 complaintsBody and structure
6 complaintsSuspension
6 complaintsEngine cooling
4 complaintsSteering
4 complaintsTransmission and drivetrain
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 28, 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