We started this list of wiring diagrams for ourselves to use at the shop. Now you can use them yourselves. The goal is to create a spot for all the popular wiring gm diagrams.
If there is a diagram you would like to see added, just shoot us an email
99-07 Harnesses
4.8, 5.3, 6.0 Engine Harness –
Red / Blue Connector
4.8, 5.3, 6.0 Engine Harness –
Green / Blue Connector
07-09 Harnesses
10-11 Harnesses
12+ Harnesses
LSA Engine Harness
Flex Fuel Information
Tach/Speedo Information