Anyone have the engine bay fuse box wiring diagrams for the C1-C4?

BURNSSAM928

MEMBER
2003 CHEVROLET 2500
6.0L
V8
4WD
AUTOMATIC
198,000 MILES

Need to find specifically c2s wiring diagrams for a 03 2500hd with a 6.0 for the under hood fuse box but would gladly take any of the diagrams I can get

Wednesday, February 25th, 2026 AT 6:05 AM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
55,383 POSTS

Sure, I got you covered, her are the fuse panel under hood connector views for the C1, C2, C3 and C4 wiring connectors. Check out the images (below). Let us know if you need anything else.

Images (Click to make bigger)