Having problems with your Cars & Trucks ?
Location of fan relay
\015 Fan will not come on\015
Being that a 92 gmc only had a mechanical fan for the engine you must be talking about the hvac fan if you look next to the blower motor there is the resister that controls the fan speed look at the connector they over heat and melt the terminals
Repair Help & Product Troubleshooting for Cars & Trucks
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