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: It would be ill-advised to blaze any trails with the 2004 Trailblazer. Its faulty fuel gauge could leave you stranded.

6.3

fairly significant
Typical Repair Cost:
No data
Average Mileage:
95,050 miles
Total Complaints:
6 complaints

Most Common Solutions:

  1. not sure (4 reports)
  2. not a fix but can turn off ignition,fan,a/c and then restart (2 reports)
2004 Chevrolet Trailblazer AC / heater problems

AC / heater problem

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2004 Chevrolet Trailblazer Owner Comments

problem #6

Aug 152014

Trailblazer LT

  • Automatic transmission
  • 130,000 miles

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

A/C / Heater blower does not work ! Can not use defrost on windshield . I freeze in the winter sweat in the summer ! 500.00 dollar fix so I've been told by dealer ! Shouldn't there be a recall ? I see alot of Tblazers with heating A/C problems . Atleast I have heat in my seat in the winter summer we have a problem :(!

- , Rockport, WV, USA

problem #5

Feb 282013

Trailblazer

  • Automatic transmission
  • 100 miles

We bought this vehicle brand new Feb 2004. The car lot we bought from had to go get it from another dealership. After we drove it home, it has just always took forever to get cool and and for the heat to warm up. It has always been this way. Get into my husband's 2003 Chevy truck and instant cold and heat....the heat can cook you right out of it. Not sure why my Trailblazer is the way it is.

- , Brazil, IN, USA

problem #4

Apr 042009

Trailblazer LS V6

  • Automatic transmission
  • 99,000 miles

Our trailblazer stayed at the shop when we first got it one problem after the other. my wife would tell them something was wrong but thought she was just hallucinating.then one day we downtown Atlanta and the car cut off in the middle o traffic. It has done it numerous of times. not to mention the dash lights by the radio wont light up and the left taillight assembly has burned little we drive it but dontt feel safe in it

- , Waverly Hall, GA, USA

problem #3

Jan 152011

Trailblazer LT V6

  • Automatic transmission
  • 120,000 miles

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

My heater/ac only works on setting 1 and 4. All others stopped working, also sometimes blower stops and restarts, A real pain in the ass

- , Randolph, OH, USA

problem #2

Jul 032010

Trailblazer 4.3L

  • Automatic transmission
  • 120,000 miles

GM should have someone that is smart enough to figure out why the trailblazer electrical system has flaw that continues causing problems throughout the system

- , Hazel Green, AL, USA

problem #1

Mar 182011

Trailblazer LS V6

  • Automatic transmission
  • 101,200 miles

I removed the battery to be able to change a burnt out headlamp.After I replaced the battery, the AC didn't work right. Cold air came from the driver's side vents, but hot air came out of the passenger's side vents. I found some answers on the internet, and pulled fuse #36 in the fuse box under the rear seat, left it out for 2 minutes, put it back in and turned key to run for 2 minutes. You could hear the system recalibrating, but still cold air from one side and hot from other. Unhooked battery, left off for half hour--still no luck. Called Dealer-he said it sounds like the actuator is broken. What !!! from disconnecting the battery. This is BS. This should have been a RECALL. I've pulled the #36 fuse a couple more times, disconnected the battery, etc. with no success. Nowhere in the owner's manual does it say, "don't unhook the battery or you will have AC problems" This seems to be a common event. if you unhook the battery in a 2004 Trailblazer.

- , Aiken, SC, USA

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