2014 GMC Sierra K2XX Fuse Box Diagram

The engine compartment fuse block sits on the driver's side of the engine bay, between the battery and the inner wing, under a black lid that unclips and lifts straight off. GMC packs the fuse puller into the left instrument panel block instead of this one, so fetch it from inside the cab first.

MY2014 trucks use the numbering the 2014 handbook's fuse tables print. The J-Case cartridges 3 to 13 fill the top two rows, the mini and micro blades crowd the middle of the tray, the four three-pin micro fuses 56 to 59 stand along the right-hand edge, and the thirteen relays 60 to 72 take up the lower half. Positions 5, 7, 9 and 53 are spare on this model year and 54 feeds the aero shutter.

The left instrument panel fuse block is behind a small door on the driver's end of the dashboard: open the driver's door and pull the panel straight off. The fuse puller for the whole truck clips inside this block.

The plate reads in bands. Fuse 1 sits alone at the top left, with 2 and 3 beside it and 6 to 9 across the top right; the two 50 A accessory-outlet cartridges 10 and 11 are on the left, the retained-accessory relay 49 wraps around fuse 12 below them, and the run/crank relay 50 sits under that. Five three-pin micro fuses, 22 to 26, cross the middle, and the door, seat and cluster fuses fill the bottom two rows.

The right instrument panel fuse block is behind the cover on the passenger end of the dashboard; open the passenger door and pull the cover off to reach it.

Its plate is narrower than the driver's-side one. The accessory outlets 1 and 2 are stacked in the top left corner, the body control module fuses 7 to 10 run across the top right, and the three big relays 50, 51 and 52 - retained accessory power and the two rear sliding window relays - are stacked down the left edge. The radio, airbag and USB fuses sit in the middle, and the front blower cartridge 43 is the large socket at the bottom.