1998 Chevrolet Cheyenne climate control panel /AC problem

Tiny
VENOM2
  • MEMBER
  • 1998 CHEVROLET CHEYENNE
  • 145,000 MILES
Climate control panel only operates the blower hi lo switch and heat. The vent selector switch, AC button, circulation button and lights are not
working. While checking out the system I found a small plug that had been melted.

I recently had to replace the intake manifold gasket and missed it. I couldn't see it in any of
the pics I took during that job but finally
found thatit plugs into the back of the compressor. Its a two prong female plug with a dark green wire with a wht stripe and a light green wire. The plastic plug totally melted away but the wire and connectorsare good.
My questions are.
1. Could that be why the controles are out?
2. If so do I need to replace the control panel or can it be fixed?
3. How can I tell wich wire goes on wich prong.
I have a recharge kit ready to go I'd just like to see some results before I go get parts.
Any answers tips, tricks, suggestions, or information will be greatly appreciated.

Thanks, Bobby


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Sunday, August 11th, 2013 AT 3:50 AM

3 Replies

Tiny
HMAC300
  • EXPERT
Try to order the correct connector for the compressor and check hvac fuses. It cold be a bad control head due to themelting connector if you can't find one at dealer get one from a junkyard and splice the wire in so it is hooked up correctly. That plug is the high pressure cutout which goes directly to hvac control on the the light green wire.
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Sunday, August 11th, 2013 AT 5:44 AM
Tiny
VENOM2
  • MEMBER
Sweet didn't expect such a quick response. Is there a way to test the control head? Probably not not going to worry about it ill get a new one and a plug. Ive checked alll the fuses and relays that I could link to the system and probably some than aren't. Diagrams read like Chinese sometimes. All a ok as far as I can tel.
Is their a way to protect the new head? An inline fuse or something.
I'll post the outcome asap. Thanks for you're help.
Bobby
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Sunday, August 11th, 2013 AT 6:22 AM
Tiny
HMAC300
  • EXPERT
Check fuses and relay underhood as well. Then use a test light or volt meter and check to see if power goes to the resistor for the lower speeds it may be bad then check to see if it comes out if it doesn't the resistor is bad
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Sunday, August 11th, 2013 AT 10:19 AM

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