Last post on Aug 12, 2012 at 6:16 PM
You are in the Chevrolet TrailBlazer
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Chevrolet TrailBlazer, Chevrolet TrailBlazer EXT, Heating / Cooling, SUV
#51 of 52 Help with A/C and Heat and air
Nov 28, 2011 (1:55 am)
Have a problem that I'm hearing is more common in the 2003 chevy trailbaizer EXT. Both the heat and A/C will now only work on the 5 setting, we noticed ealrier in the summer that occasionaly the air would work only on settings three or higher, however recently the only output we now have is on setting 5. Also with the heat on regardless of the level I now have only cool or cold air being blow into the middel and rear zones. Any ideas or advice would be greatly appreciated, signed desperately seeking heat in cold OK winter.
#52 of 52 AC/Heat Vents
Aug 12, 2012 (6:16 pm)
I Just changed my battery in my 2004 LS TB, when I turned on the ignition my AC/Heat only works on defrost vents and a little from the floor vents no matter where I turn the vent control knob. When I key up to accessory I can here something humming or chattering, sounds like coming from top, center of dash. Has anyone experienced this or have any ideas on fix. I appreciate any help you can give me in this matter.