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.

CarComplaints.com Notes: Carrying the not-so-proud traditions of its 2002 predecessor, the 2003 has a handful of instrument panel malfunctions that can leave you guessing your speed, engine temperature or how much gas is left in the tank.

5.6

fairly significant
Typical Repair Cost:
$310.00
Average Mileage:
95,200 miles
Total Complaints:
5 complaints

Most Common Solutions:

  1. replace blower switch (3 reports)
  2. not sure (2 reports)
2003 Chevrolet Trailblazer AC / heater problems

AC / heater problem

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2003 Chevrolet Trailblazer Owner Comments

problem #5

Dec 042012

Trailblazer LT 4.2L I6

  • Automatic transmission
  • 144,000 miles

A D V E R T I S E M E N T S

Fan speed settings 1, and 5 didnt work. to fix it all you have to do is replace the blower resistor motor. just get the part from autozone and go under the dash and get a 7mm ratchet and take bots off the plastic piece under the dash and isconnect the connectors and get the new resistor and plug it back in

- , Elizabeth, PA, USA

problem #4

May 012008

Trailblazer LT EXT 4.2L 6 cyl

  • Automatic transmission
  • 65,000 miles

One day the blower switch stopped working on the lowest speed (1). 1 now acts like you have blower turned off. Other speeds still work, though speed 5 only works if both top and bottom vents are selected. Not sure if that's a problem or a "feature". Speed 5 has worked this way since I bought it in '06. Oh, and every once in a while speed 1 DOES decide to work. Go figure...

- , Paoli, PA, USA

problem #3

May 012008

Trailblazer EXT 4.2L

  • Automatic transmission
  • 100,000 miles

WHEN I NEED MORE POWER FROM MY HEAT OR AIR ITS ANNOYING WHEN IT DOESN'T BLOW FULL STRENGTH

- , Atlanta, GA, USA

problem #2

Aug 012008

Trailblazer LS V6

  • Automatic transmission
  • 98,000 miles

THIS IS THE SECOND COMPLAINT ENTERED ON THE SAME VEHICLE. THE FAN SWITCH WENT OUT, WENT TO THE DEALER PURCHASED A NEW SWITCH, INSTALLED IT AND NOW IF I TRY AN USE MY DEFROST IT MAKES THE CAR STALL. I HAVE TO KEEP IT ON FEET JUST TO DEFROST THE WINDOWS. CALLED THE DEALER TO INFORM THEM OF WHAT WAS GOING ON THEY SAID I WOULD NEED TO BRING IT IN AND LET THEM DIAGNOSE IT AGAIN WHICH IS ANOTHER 86.00 AFTER I PURCHASED THE PART FROM THEM WHICH APPEARS TO BE DEFECTIVE. WHY SHOULD I HAVE TO PAY FOR THEM TO DIAGNOSE IT AGAIN

- , Wilmington, OH, USA

problem #1

Jun 272007

(reported on)

Trailblazer EXT V6

  • Automatic transmission
  • 69,000 miles

this whole situation was an ass cause i had to ride in 90+ degree weather

- , Middletown, OH, USA

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