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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