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

Engine Cooling Fans and Relays


Object Number: 1262686  Size: FS
Master Electrical Component List
Cooling System Description and Operation
Coolant Level Switch - 4.6L
ABS, PCM BATT, and COOLFAN 1 Fuses - 3.8L
G103
Serial Data Class 2
G103
Serial Data Class 2
Figure 2:

Coolant Level Switch - 4.6L


Object Number: 1338331  Size: FS
Master Electrical Component List
Cooling System Description and Operation
Engine Cooling Fans, and Relays
Serial Data Class 2
G103