Three problems related to electrical system have been reported for the 2004 Chevrolet Blazer. The most recently reported issues are listed below.
The contact owns a 2004 Chevrolet Blazer. While driving 30 mph, the speedometer displayed 110 mph. The speedometer would reset itself back to normal once the contact turned off and restarted the vehicle. The failure prevents him from knowing how fast he is traveling. A report was filed with the manufacturer and they stated that the VIN was not included in a recall. The contact will be notified if they choose to assist with the repair. He will take the vehicle to the dealer to be diagnosed. The failure mileage was 78,000 and current mileage was 78,900.
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. At this time I don"t have a true speed reading and my tachometer has started sticking. This problem occurs everyday. At this time I have not had it repaired.
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.