general problems of the 2004 Chevrolet Trailblazer

13 problems related to power train have been reported for the 2004 Chevrolet Trailblazer. The most recently reported issues are listed below.

1 Power Train problem

Failure Date: 01/01/2021

Electronic throttle body? no throttle control, motor will only idle, turn ignition switch off, then restart it will run. Reduced engine power light comes on. Happens for no apparent reason. Very unsafe situation.

2 Power Train problem

Failure Date: 07/04/2019

Accelerating on it's own and idling.

3 Power Train problem

Failure Date: 10/10/2015

The contact owns a 2004 Chevrolet Trailblazer 360. The contact stated that the light failed to illuminate on the gear shift mechanism and was not able to view what gear the vehicle was shifted into. The contact also indicated that the battery, the seat belt and the brakes warning lights randomly illuminated as the failure progressed. The vehicle was not diagnosed or repaired. The approximate failure mileage was 70,000.

4 Power Train problem

Failure Date: 09/14/2015

I started my vehicle and shifted into reverse. The shifter handle moved freely but would not engage in reverse or drive. My vehicle was stuck in park. Luckily, this happened when I was in my garage at lunchtime headed back to work. When I searched on the internet about what the problem could be, I saw that other gm vehicles had been recalled for a broken shifter cable. When I spoke to the tow truck driver and explained my problem, he said that it was probably a broken shifter cable and that he had towed other Trailblazers for the same problem and that the vehicles had been part of a recall years ago. I had not found a recall for my particular vehicle, but that other gm vehicles had been recalled for that reason is why I am filing this report. I have had my vehicle repaired and will upload the repair invoice.

5 Power Train problem

Failure Date: 12/16/2014

When I turn 4wd on, the light gets stuck in 4wd even when I try to turn it off. I think my car is stuck in 4wd at this point.

6 Power Train problem

Failure Date: 11/17/2014

Engine started misfiring on random cylinders,misfire does not stay on same cylinders. Has dramatic loss of power. Diagnostic code says random misfire. Dramatically decreased fuel economy. Bad vibration. Service engine light flashes during misfire. Does not have a constant misfire, it comes and goes.

7 Power Train problem

Failure Date: 09/08/2012

Transmission cooler line corroded and began leaking next to exhaust manifold which could have resulted in a fire. Lines had to be replaced due to excessive corrosion.

8 Power Train problem

Failure Date: 08/01/2012

My right side back door does not open and my left back door does not close unless I hit the lock first. Also as I am driving no matter what the weather my 4 wheel drive will just kick in on its own. Now it feel as though the transmission is going. This to me is a danger to my children and myself> I also feel that these are defects in this vehicle as I feel g. M should be responsible I will never buy another g. M again. Someone should look into this.

9 Power Train problem

Failure Date: 06/16/2012

Left my house at 10:00 am to get my blazer serviced, the shop was not open - I did my rounds and was about five minutes from my house at a red light, pulled away from the light at the intersection heard a loud pop and blaze stalled. Good thing there was a police officer coming in the other direction, towed to shop at 12:00 pm was told that the front transmission was burnt/blown. I went from needing a tune up to a much more serious problem. Just had blaze serviced 3 months prior.

10 Power Train problem

Failure Date: 01/05/2012

Trans leak from trans cooler lines.

11 Power Train problem

Failure Date: 01/04/2012

Car felt "stuck" in gear, wouldn't accelerate, low on transmission fluid. Added more fluid, replaced speed sensor, camshaft & crankshaft sensors. Still having issues with rpms going high, car slamming from one gear into another. Also cannot run heat while driving, fan draws power & causes engine to stall out. Car also burning through gas very quickly.

12 Power Train problem

Failure Date: 12/27/2010

I have a 2004 Trailblazer I bought new it only has 31100 miles on it and is in great condition and the transmission has gone out on it . . Their are. Many many complaints about same thing. . . Some with less miles and some with more. . . I can not afford to pay 3000 dollars for a faulty transmission when it is obvious it is something to do with gm transmissions. . . . An investigation needs to be done I am a husband a father and both me and my wife work full time but we can not afford this as many other people cant and chevy will not stick up for their vehicles,,,recalls must be done so the working class can survive without this vehicle I will lose my job and gm will get richer and richer to bad they don't make cars like they use too. . . All I did was get in my car start it let it warm up and went to put it in reverse and clunk and just grinding their must be something done I am doing research it looks like this transmission has been faulty since the 2002 Trailblazer came out but nothing has been done about it yet. . . .

13 Power Train problem

Failure Date: 07/01/2006

I was pulling away from a stop sign when my vehicle just shut off. I pressed the brake, put my vehicle in park, and turned the key to the off position. Then I started my vehicle as I normally would, and it started up without a problem. This was very disconcerting and scary. This happened in a quiet, residential area, so there was no other traffic on the road at the time. I intended to have my vehicle checked, but I never did. This was several years ago. The incident was brought back to my attention because of a recent but different mechanical failure with my vehicle. During my internet research of the other mechanical problem, I came across recall information for other gm vehicles that had been recalled for suddenly shutting off while in drive. Although I did not find recall information for my make/model/year, I am filing this report because my vehicle has shut off while it was in drive. Since I don't know the exact date when this occurred, I will place an approximate date in this report. I was "house shopping" at the time, so the approximate date will be close.



Fuel Economy of Trailblazer Vehicles
Trailblazer Service Bulletins
Trailblazer Safety Recalls
Trailblazer Defect Investigations