You have to reset the control head by unplugging it or disconnecting the battery cable first, then you can jumper the connector to see if it will work.
Good Luck and God Bless
'91 GMC Air conditioning problems.
My air has always worked well but the compressor always made what i call a groaning noise when it operated and I could hear this inside the truck. I have owned this truck since it was a year old. Once in a while the AC would flash on the heater control and I would disconnect the battery and reset and it would work again. Now the AC doesn't work at all and the AC flashes every time I start it up. Is this more than a recharge problem?...is it worthwhile to try to fix?...thx
1 - 1 of 9 Posts
Good Luck and God Bless
1 - 1 of 9 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
GM Truck Club Forum
A forum community dedicated to all General Motors truck owners and enthusiasts. Come join the discussion about performance, lift kits, wheels, tires, modifications, troubleshooting, maintenance, and more!
Full Forum Listing
