Question about 2005 Chevrolet Avalanche
Changed the main battery on my 2005 chevrolet avalanche 1500. Now the HVAC only blows very hot air when turned on. Temp selected to 70, AUTO mode. The compressor still works, return line is cold, HVAC fuse is OK. I'm stumped!
I disconnected the battery for 10 minutes then reconnected the battery. I started the engine then immediately shut off the climate control, the engine still running. After ten minutes I turned the climate control on, everything works okay.
Posted on Oct 01, 2009
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Your system is computer and hold the a/c switch and the switch to the left at the same time and it will recalibrate it self and the doors will work right, Hope this helps you
Posted on Sep 30, 2009
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Posted on Jan 02, 2017
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If you touched any of the A/C controls within 45 seconds of starting your Suburban (after the battery change), you messed up the 'calibration mode' of the HVAC.
Pull the HVAC fuse (10amp) under the hood, and pull the two adjacent fuses (30 and 10amp) under the dash listed as 'climate control' in the manual.
Push the fuses back in, restart your car, but DONT TOUCH ANY of the A/C controls for 90 seconds.
I bet the A/C starts working again normally.
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