Air conditioner/heater

Tiny
MONTEB
  • MEMBER
  • 1991 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • MANUAL
  • 224,000 MILES
Went to turn on air conditioner and it lit up for a few seconds then went out. Everything else works fine, but air conditioner control module will not light up.
Do you
have the same problem?
Yes
No
Monday, August 15th, 2016 AT 2:55 PM

6 Replies

Tiny
MERLIN2021
  • EXPERT
So if I understand, the air conditioner unit functions, but the instrument lighting is out?
Was this
answer
helpful?
Yes
No
-1
Monday, August 15th, 2016 AT 3:42 PM
Tiny
MERLIN2021
  • EXPERT
Control Panel Illumination
1. Perform CPU controller circuits test. With control panel connector in place, touch positive test
lead to terminal No. 2 (Gray wire). See Figure. Operate instrument panel dimmer control and ensure
voltage goes from high to low.
2. If voltage does not go from high to low, check dimmer control or circuits. If voltage varies at terminal
(but control panel does not respond), replace control panel assembly.
Was this
answer
helpful?
Yes
No
-1
Monday, August 15th, 2016 AT 3:59 PM
Tiny
MONTEB
  • MEMBER
Control panel will not light up or work air conditioner or heat, I took control panel out and tried it in my sons pickup and it works fine, so control panel is not bad.
Was this
answer
helpful?
Yes
No
Monday, August 15th, 2016 AT 5:53 PM
Tiny
KEN
  • ADMIN
Here is a wiring diagram to do some testing. Did you check the fuse power and relay?

Here is a guide on how to check the fuse

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Let us know what you find so it will help others

Best, Ken

Was this
answer
helpful?
Yes
No
-1
Friday, August 19th, 2016 AT 8:34 PM
Tiny
MERLIN2021
  • EXPERT
Thanks Ken, Keeping your hand in eh?
Was this
answer
helpful?
Yes
No
Saturday, August 20th, 2016 AT 4:35 PM
Tiny
KEN
  • ADMIN
Yep, helping out when I can in between guides, great to have you back. We are going to be doing a regular forum style site soon so we can all talk again, that will be nice.

Best, Ken
Was this
answer
helpful?
Yes
No
Saturday, August 20th, 2016 AT 6:19 PM

Please login or register to post a reply.

Recommended Guides