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really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
31,197 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Chevrolet Blazer electrical problems

electrical problem

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2004 Chevrolet Blazer Owner Comments

problem #8

Jun 142012


  • miles


The problem is with the ignition. The key does not release after it has been turned to the off position. The car must be turned back on and often moved in reverse then forward a number of times before the key will release from the ignition.

- Edgartown, MA, USA

problem #7

Jul 022008


  • 60,000 miles
The contact owns a 2004 Chevrolet Blazer. The contact stated that the key became lodged in the ignition switch. The vehicle was taken to the dealer. The techncian diagnosed that the ignition was defective and needed to be replaced. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 60,000 and the current mileage was 90,000.

- Yonkers, NY, USA

problem #6

Jun 012006

Blazer 6-cyl

  • 12,400 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. The consumer also stated there was a problem with the two wheel thrust alignment, in which the vehicle had to be serviced twice within 7 months. The consumer no longer owns the vehicle.

- Hurst, TX, USA

problem #5

Feb 012009


  • 78,000 miles


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.

- South Dennis, NJ, USA

problem #4

Dec 062008


  • 58,289 miles
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 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.

- Dahinda, IL, USA

problem #3

Jun 222007

Blazer 6-cyl

  • Automatic transmission
  • 31,662 miles
The contact owns a 2004 Chevrolet Blazer. When the contacts wife went to start the vehicle, it failed to start. She looked under the hood and tapped the battery cables with a hammer. The vehicle restarted and she shut the hood. While driving 60 mph, the hood popped open and smashed into her windshield, causing the glass to shatter. She pulled over and attempted to close the hood, but it would not budge. She managed to drive the vehicle back to her residence. The contact was able to shut the hood and tie it securely with a rope. He drove the vehicle to the dealer. The contact believes that this is a manufacturer defect. The current and failure mileages were 31,662. The consumer provided the registration, bill of sale, service invoices, vehicle inspection and GM vehicle summary. The dealer stated intermittent incorrect turn signal operation. Updated 08/23/07 updated 11/17/08 updated 11/18/08.

- West Helena, AR, USA

problem #2

Nov 012004

Blazer 4WD 6-cyl

  • Automatic transmission
  • 6,000 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. Other failures included replacing the battery when the vehicle was only one year old, cd player, door locks, clock, and interior lighting malfunction, and failure attempting to remove the key from the ignition. The driver's side door almost fell off completely and had to be lifted approximately three inches in order for it to close. The vehicle constantly had fuel failures, completely lost power, and would not release the key from the ignition. The contact reported a frame failure the frame felt as if it was shifting while the vehicle was in motion and gearing to the right. The cause was not due to alignment. The ball joint and axles were replaced. The failure recurred five months after the repair. During the failure she attempted to depress the brake pedal and it began to lock and make grinding noises. She released the steering wheel and removed her foot from the brake pedal. The vehicle spun in circles, and the front end struck the side walls of the highway. The air bags failed to deploy. The contact has statements from the mechanic and stated that the vehicle was a lemon. The current mileage is 20,000, and failure mileage was 6,000.

- Nampa, ID, USA

problem #1

Jul 032004

Blazer 4WD 6-cyl

  • Automatic transmission
  • 3,222 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.

- Bel Air, MD, USA

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