Hi I am new to this forum and was wondering if anyone out there can help. I have a 1997 Sierra 1500. My problem is a strange one. I continue to blow the fuse in the engine compartment fuse compartment marked ING-E. The owners manual indicates this fuse id for the Aux Fan Relay Coil, A/C Compressor Relay, Hot Fuel Module and Dual Tanks. I do not have dual tanks. This is a 10 amp fuse. Also, the fuse does not blow when the truck is idling. I have replaced the fuse and it appears to work. After I drive the vehicle and check it again it is blown. I have disconnected the A/C clutch and it still blows. I have replaced and removed the A/C replay and it still blows. I have no idea where or what the aux fan is and where to locate the relay or the hot fuel module. I should mention that that truck runs fine with the fuse blown but the A/C does not work. Any help would be appreciated.