Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
5,776 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 engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2003 Chevrolet Trailblazer EXT:

Unsubscribe any time. We don't sell/share your email.

2003 Chevrolet Trailblazer EXT Owner Comments

problem #3

Dec 312007

Trailblazer EXT

  • Automatic transmission
  • miles


My 2003 TB has clicking noise and the check engine light has came on several times, about 2 or three years ago the cam sensor had to be replaced, sometimes the car will shake or rough idle. I took it to get the check engine light serviced and they said they had to order parts, after the parts did not come in, after almost a week I took my car home for the weekend. No one ever call about the parts coming in, so I called about 2 1/2 weeks later and they said the parts were in, it had been aprox. 35 days from the first visit. When I took it back I expected the car to be in the shop just a few hours to put the parts in. I checked on the car later in the day and they said they needed to keep it because it was showing a service code P0014, and they wanted to make sure that the parts ordered would fix the problem., because some newer TB's needed a new motor when showing that P0014 code. Has any one had this problem?

- Lawton, OK, USA

problem #2

Mar 172007

Trailblazer EXT 4WD 6-cyl

  • Automatic transmission
  • miles
We own a 2003 Chevy Trailblazer ext. Our vehicle has 58K miles. We noticed this year, our vehicle has been burning excessive amounts of oil. A couple of examples are during a 600 mile trip our oil consumption was 5 quarts of oil. We have regular oil changes every 3,000 miles. Another example recently includes 2,000 miles after an oil change was completed we had to add 2 1/2 quarts of oil. We are receiving black smoke from the expired in 2006.

- Taberg, NY, USA

problem #1

Nov 042004

Trailblazer EXT 4WD 6-cyl

  • Automatic transmission
  • 17,327 miles
Left driver's side outside mirror is not holding the correct settings, and clicks constantly. The mirror is hitting against something, and turns completely to the ground. When using keyless entry the mirrors also turn to the ground. The mirror is changing by itself, and it is not going back to the correct setting. The mirror is always making a clicking noise and it is facing downward. There is no problem with the right side. The dealer replaced the right side mirror, and from then on the left side has not worked. Consumer has taken vehicle to dealership 4 or 5 times to be checked. Dealership insists the mirror is working fine. But as soon as the consumer leaves the dealership the mirror will work for a couple of hours and then stop working properly. Consumer took the vehicle to the dealership and the mechanic didn't write down the problem with the mirror in his paperwork, and this happened more than once. When shifting from park to reverse the vehicle jerked at times. The engine control module was reprogrammed. The consumer believes that the reprogramming resulted in poor fuel economy. The cd player made a hissing noise. When the brakes were applied they would grind. The 4-wheel drive switch shorted. Windshield wiper motor failed. Right side tag light bulb blew.

- Marietta, GA, USA

Not what you are looking for?