GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2008 🢒 H3 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Trailer Connector/Provision Schematics
Figure 1:

Trailer Wiring (Except EXP)
Object Number: 1911973 Size: FS
Master Electrical Component List
Control Module References
Trailer Wiring - 1 of 2 (EXP)
Figure 2:

Trailer Wiring - 1 of 2 (EXP)
Object Number: 1911975 Size: FS
Master Electrical Component List
Control Module References
Trailer Wiring - 2 of 2 (EXP)
Trailer Wiring (Except EXP)
Figure 3:

Trailer Wiring - 2 of 2 (EXP)
Object Number: 1911976 Size: FS
Master Electrical Component List
Control Module References
Trailer Wiring - 1 of 2 (EXP)