1986 Chevy 1500 A-C/Heater/Defrost control issue
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1986 Chevy 1500 A-C/Heater/Defrost control issue
The A/C, heater, defrost control on my 1986 Chevy 1500 only works thru the dash vents. No response from moving to heat or defrost settings. I have good heat/cold control from the control unit. Just starting to trouble shoot today. Any help appreciated.
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