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Chevrolet
Avalanche
Climate Control
Air Conditioner
Fuse
Heater/AC will not turn on
2003 CHEVROLET AVALANCHE
84,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
RSTREB223
MEMBER
3 POSTS
FOLLOW
The heat/AC unit will not even light up when I turn it on, so I am not getting anything. I checked the fuses and replaced them and still nothing.
Mar 19, 2018 at 2:37 AM
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ASEMASTER6371
CERTIFIED EXPERT
52,796 POSTS
Good morning.
Do you have auto climate control?
Do you mean the control head or the AC button that will not light up?
Roy
Mar 19, 2018 at 2:50 AM
RSTREB223
MEMBER
3 POSTS
I think I have auto climate control, and when I press the power button to the heater/AC nothing lights up and nothing turns on.
Mar 19, 2018 at 8:32 PM
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ASEMASTER6371
CERTIFIED EXPERT
52,796 POSTS
Okay.
I attached a diagram of the system for you. you need to check the two fuses listed for power on both sides as the unit will not work without power.
One fuse box is at the left end of the cluster and the other one is under the hood.
Roy
Image (Click to enlarge)
Mar 20, 2018 at 3:28 AM