GM Service Manual Online
For 1990-2009 cars only

Onstar Schematics


Object Number: 1785364  Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
Underhood Fuse Block Fuses- ABS, ABS2, BCK UP, CNSTR VENT, ECM/TRANS, EPS, HTD SEATS, IP IGN, LTR, MIR, PRK/NEUT, S-BAND/ONSTAR, and RUN/CRANK Relay
Underhood Fuse Block Fuses- ABS, ABS2, BCK UP, CNSTR VENT, ECM/TRANS, EPS, HTD SEATS, IP IGN, LTR, MIR, PRK/NEUT, S-BAND/ONSTAR, and RUN/CRANK Relay
Power, Ground, Low Speed GMLAN
High Speed GMLAN
Entertainment/Communication Schematic Icons
G401
G401
G401