definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
31,770 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.

2003 Chevrolet Trailblazer EXT transmission problems

transmission problem

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2003 Chevrolet Trailblazer EXT Owner Comments

problem #2

May 142006

Trailblazer EXT 4WD 6-cyl

  • Automatic transmission
  • 59,500 miles


2003 Chevy Trailblazer ext transmission problems: Transmission shifted very hard from 1st to 2nd gear and 2nd to 3rd gear after vehicle had been driven for about 1 hour. This occurred several times over the course of a month. Finally, the "service engine soon" light came on during about the 4th occurrence. Called onstar and they stated that there was a powertrain/transmission problem that should be addressed soon. Took vehicle to several transmission shops and was told that the code was an 1870 "general transmission slippage" code. Transmission shop indicated that the problem is a result of a torque converter failure. Transmission is now being replaced at a transmission shop with cost of approximately $2900. Vehicle has just under 60,000 miles. It is my intense feeling that this type of replacement should not be necessary on a $38,000 vehicle with this low of miles.

- Dacula, GA, USA

problem #1

Nov 172003

Trailblazer EXT 4WD 6-cyl

  • Automatic transmission
  • 4,041 miles
This vehicle is 4 months old and just rolled over to 7000 miles. It is in the shop currently for the sixth time and has now been out of commission for over 30 days. It has had multiple transmission problems; valve body twice, torque converter, shift solenoid, BTSI solenoid, floor shifter (with console) all had to be replaced. It is in the shop now for the 4 wheel drive for the second time; 1st time to repair problem I was having and repaired per service bulletin. Obviously that did not repair the problem as I just had the same problem again. The 4WD indicator light comes on and the truck will not go out of A4wd unless I shut the truck off and restart. The dealer just called and said they have to replace the control motor ? that goes to the transfer case. I am mechanically challenged and do not know what most of these componets are. The shocks had to be replaced as they were leaking at 6000 miles. The exhaust shields had to be re-aligned as they were rattling on acceleration. Spoke to Chevy representative, they said they can do nothing about replacing this vehicle as it is under warrany and I will just have to keep taking it back for repairs. They offered free oil changes and tire rotations for a year. I told them that was an insult and that this is not the last time that they will hear from me. I am filing under lemon law with an attorney as I do not believe I will get very far on my own. The dealer has been great, it breaks they fix it and it breaks agian and they fix it, that's all that they can do. My problem lies with Chevrolet/General Motors and this truck that I believe was put on the market with design flaws.

- Eldred, PA, USA

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