What does the 4WD fuse do in the dash?
What does the 4WD fuse do in the dash? The 4WD fuse powers in the dash fusebox the front axle actuator, you may be hearing the encoder motor shift the transfer case but it is not in 4WD till the axle actuator engages the front axle. The blinking lights indicate the axle is not engaged. The 30A TREC fuse in the underhood fusebox is what powers... Is there a TREC fuse for the 4WD switch? The GM shop manual obviously errored relating to the 4WD switch to a fuse supposedly labeled as an ATC fuse, when only a TREC fuse...