Underside of the fuse box?

2004 CHEVROLET AVALANCHE
151,000 MILES • 5.3L • V8 • AUTOMATIC
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THEREAL2LATE
  • MEMBER
  • 1 POST
Do you have diagrams for c1 and c3
Apr 15, 2026 at 9:04 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,236 POSTS
Hi:

I found the pin-outs for the C1 and C3 connector. If you look below, I attached several pics.

I started with the C1 connector. It shows the connector and the following pictures identify what each connector is for. Take a look over things and let me know if you have questions.

Take care,

Joe

See pics below
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Aug 4, 2026 at 9:22 PM
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