2015 GMC Sierra K2XX Fuse Box Diagram

Look for a rectangular black box on the driver's side of the engine compartment, just inboard of the battery; its cover unclips at the corners. The puller you need for these fuses is stored across the cab, in the left instrument panel fuse block.

Reading the MY2015 plate: the two Micro J-Case cartridges 1 and 2 sit low on the left of the top field, the J-Case row 3 to 13 runs across the top, and the micro blades fill the centre in short columns. The three-pin micro fuses 56 to 59 are the taller sockets at the edges, the relays 60 to 72 occupy the bottom half, and 54 and 55 - aero shutter and front washer - are the two small horizontal sockets near the bottom right corner.

Swing the driver's door open and look at the end of the dashboard: a cover the size of a paperback pulls off and exposes this block. It also holds the plastic fuse puller.

Numbering runs left to right in short rows rather than in one sequence. The top row carries 1, then 2 and 3, then 6, 7, 8 and 9; below it are the cartridges 10 and 11, fuses 13 and 14, and 17 and 19 to the right. The middle of the plate is the row 22 to 26 with 27 and 28 to its right, then 29 to 34 and 36. The bottom rows hold 37, 40 and 41 for the doors and driver seat, and 43 to 45 for the heated and cooled seats.

Look at the passenger end of the dashboard with the door open: the cover there lifts off and exposes this block, which the handbook calls the right instrument panel fuse block.

Reading down the plate: 1 over 2 in the top left corner, then 7, 8, 9 and 10 across the top; 15 on its own with 18 and 19 to the right and the sunroof fuse 20 in the corner; the tall fuses 23, 26 and 27 across the middle with 28 beside them; then 32, 35, 36 and 37; and at the bottom the rear sliding window fuse 39, the blower cartridge 43, fuses 44 to 46 and the passenger seat fuse 47.