10.0

really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
61,375 miles

About These NHTSA Complaints:

The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.

Get notified about new defects, investigations, recalls & lawsuits for the 2003 Chevrolet Trailblazer EXT:

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

problem #8

Jul 152017

Trailblazer EXT

  • 150,000 miles
Driving down road on the way to hospital and trailblazer made a loud clunk. Then started making a whirring noise. Finished driving slowly to hospital as not to mess anything else up. Pulled in and parked. Got ready to leave hospital and had no reverse only foward.

- Roper, NC, USA

problem #7

Jul 292010

Trailblazer EXT

  • 80,000 miles
My key will not come out of the ignition I had to unscrew and remove the bottom of my steering to push the button also all of my instrument gauge do not work including the speedometer and all gauges so I never know my temperature or fuel level, oil pressure they all are not working properly my speedometer only works sometimes. Also my engine is runny rough and I hear a vibration and ticking. My check engine light is and I'm getting code saying theres a leak in the fuel evap system. I have searched the internet and everyone has the same problems with their 2003 trailblazers. Why isn't Chevrolet recalling these problems its fustrating they want several hundreds of dollars I cannot afford

- Paso Robles, CA, USA

problem #6

Dec 052015

Trailblazer EXT

  • miles
I have replaced the front differential twice in 10 months. I bought new parts for it not used that were redone to get rid of the problems it had now it has gone again. This time I haven't even used the four wheel drive yet since the last repair. I have research it and I noticed a lot of people with the same problem.

- Falmouth, MA, USA

problem #5

May 012015

Trailblazer EXT 4WD 6-cyl

  • miles
I purchased a 2003 trailblazer from an individual. The front differential had a hole in it. So I purchased a differential from a scrap yard. 90 day warranty. Still had a noise. I still had a noise front differential was out again. I purchased the third differential from a different yard took it apart. Found the driver side bearing bad. It seems to be a very common problem because the driver side drivers constant. I was wondering if there is a recall. I see a lot of complaints online. Thank you there was a fire the differential grease burnt bearing went out and chard motor and surrounding area no real damage.

- Sadorus, IL, USA

problem #4

Jun 092014

Trailblazer EXT 8-cyl

  • 140,000 miles
There is a strong odor of gasoline vapors coming from the rear of the vehicle, a crack can be seen in the neck of the fuel tank. When filling the vehicle, fuel spills out of the tank from the crack. The fuel gauge cluster in the dash doesn't work. The blower on the A/C unit doesn't work on the highest (5) level. Also, the fan clutch went out causing the car to overheat severely. The fan does not engage, causing the water pump shaft to become damaged. Also, the rear driver side window quit functioning, despite buying an expensive new regulator and replacing it. Having researched the issues, I find that I am among hundreds, possibly thousands of unsatisfied people with the same problems.

- New Iberia, LA, USA

problem #3

Feb 172009

Trailblazer EXT

  • miles
Stopped at a stop light the car would not go forward would go backwards had just had transmission replaced 1 year before only had 79K miles bought the car brand new both driver window motors have gone out seal to front driver door transmission replace pwr steering--rack and pinions and usually have regular check up worst car I have ever bought.

- Merrillville , IN, USA

problem #2

Feb 172003

Trailblazer EXT

  • 61,000 miles
Lisa was taking kids to school when she noticed problems when stopping got to moms house and called shop. On way to shop front differential came apart and took steering and axle with it.

- St Joseph, MO, USA

problem #1

Feb 282008

Trailblazer EXT

  • 60,000 miles
Where should I start" purchased 03 trailblazer in 2/08 w/only 60,000 miles. Has been in shop 3 months..lost count of costs. A/C and heat not working properly..no hot air; clutch fan replaced; transmission slipping; engine cuts off while at stop-light. Should I go on" you would think w/only 60,000 miles on it--it was just getting broken in. I have never been so disappointed in a truck before..now I am stuck with the truck and its payment...no more money to repair and can't afford to trade in.

- Kilmarnock, VA, USA