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Vent Door/Actuator HELP PLEASE
Truck: '98 GMC JIMMY SLT 4x4-Climate control!!
My truck only blows hot air = vent door problem. So I took it out, it was infact the nylon/plastic gear worn down. So I bought a new acuator/blend door unit.
I put it in yesterday, but it went back to the heat only (vent open) position. So I tried taking the battery cables out, for about 10mins, but still no luck.
I took out the battery cable last night, with the RDO/ACEE fuse (15AMP)...but it will still ONLY BLOW HOT AIR. (VENT OPEN).
When I manually move the plastic stick which controls the flap (to CLOSED), i get outside air, but when the flap is open its all hot air.
SO HOW DO I RESET THIS MODULE????