The Worst 2002-2009 Trailblazer Problems

  1. Sudden Low Beam Headlight Failure

    The 1st generation TrailBlazer's low beam headlights can suddenly shut off even though the lights themselves are perfectly fine. The issue is a a defective headlamp driver module which is responsible for distributing power to the lights.

  2. Passlock Security

    One of Chevrolet’s solutions for stopping thieves from driving away with a car is, coincidently, doing the same thing to the actual owner.

  3. Inaccurate Gas Gauge

    One of the more infamously problems with GM vehicles is a faulty fuel gauge that often leaves owners wondering just how much gas is left in their tank.


What Owners Complain About

Sometimes it helps just to tally up the complaints and see where the biggest stacks are. Use this information to learn about troublespots or to run for the hills.

What Breaks

Years to Avoid

1st Generation Trailblazer Key Numbers

  1. 8 model years

    Grouping all models by their year can reveal some baddies.

  2. 2,158 complaints

    Running tally of owner grievances filed to

  3. 71st in reliability

    Overall reliability rank out of 80 eligible generations.

What Trailblazer Owners Say About This Generation

Sudden Low Beam Headlight Failure

I was driving home from a wedding on the interstate at 55 mph, and my headlamps failed. Everything went completely dark. After a panic, I was able to turn on my high beams, and they worked properly. I turned the car off, waited a few minutes, and turned it back on. The low beam headlamps worked then. Since the first incident, I have had approximately 10-15 other incidents of the same occurrence.

Sudden Low Beam Headlight Failure

I was positive that my vehicle was included in the recent recall, but when I called my local dealer, I was advised that my vin number was not included. I don't understand, since the issue on the recall is exactly the issue that I am dealing with. I have had to limit my use of the vehicle at night for fear that the headlamps will fail. Side note - they have failed at night twice in the last week alone.