GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Cooling Fans and Relays


Object Number: 391197  Size: FS
Cooling System Components
Engine Cooling Fan Description - Electric
Instrument Panel Cluster (IPC) Displays
OBD II Symbol Description Notice
Serial Data Class 2
G103
Battery Feed to the Underhood Fuse Block
PCM and ESD Notice
Figure 2:

Instrument Panel Cluster (IPC) Displays


Object Number: 615216  Size: FS
Cooling System Components
Instrument Cluster Description
Cooling Fans and Relays
Serial Data Class 2