Hot Rod, my 2001 Topkick has like you mentioned resettable breakers lower left of the steering wheel, and a set of relays accessible by pulling the glove box out and then a bank of big breakers under the hood in front of the windshield. Good luck figuring out who controls what though. I'll never own another GMC product EVER!
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2001 GMC 6500 Topkick, 22' box, dropped frame, designed to fit into a 9' garage door. 3126 CAT 6spd Man Lo-Pro 19.5's w/ 3.07 rear axle ratio
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