Chevrolet Repair: 91 GMC Jimmy V-6 fuse, compressor clutch, gmc jimmy

Question
ac/heater blower motor fuse keeps blowing 25 amp and tried  20 amp.
Would this be due to an old blower motor/original...or what else to do to try to fix? thanx

Answer
Hi Bill,
Sure could, but I would want to measure the current flow with an ammeter to see what the motor takes.
The compressor clutch, relays, and resistors are protected by the same fuse, and a short anywhere in the circuit could cause the fuse to blow.

Van