Hello,
I own a 1991 Silverado ext. cab. When I switch to defrost position, the display begins to flash and the defrost doesn't work. If I set the position to half defrost/half floor it appears to work fine. Any suggestions would be greatly appreciated.
Marbo
I had a similar problem with mine. When working the temp control, all the arrows would start to flash. Seemed to do it at random... Turned out to be a corroded ground wire in the wiring harness behind the dash, near CD player slot but still on the instrument cluster side...
HTH
DWB
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