Please help...my 08 Silverado keeps blowing fuses to my fan blower motor every time I put a new 1 in and also causing my right side blinker and brake light to fail??? I've replaced the fuse box under the hood once before bc I was having electrical issues...it fixed it for a few months...now having issues again.

 

Welcome from Florida. Have you replaced the blower motor resistor or the blower motor?

 

Something you might try,
Disconnect all wiring to the blower motor and apply direct power and ground to the motor. It should run at high speed. Does it?

When the brgs get dry, the motor armature is difficult to turn and requires a lot of current and if it exceeds the fuse rating , it will cause the fuse to blow.

 

Curtis Lee: Welcome to the forum. You might post your question over in the Silverado section where you will get more views also.