GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 Yukon XL - 4WD 🢒 Engine 🢒 Engine Cooling 🢒 Engine Cooling Schematics
Figure 1:

Engine Coolant Level Switch - 2500 Series
Object Number: 1608098 Size: FS
Master Electrical Component List
Cooling System Description and Operation
Control Module References
Engine Cooling Fans - 1500 Series
Power, Ground, DLC and Splice Pack SP205
G104 and G107
Figure 2:

Fan Controls - 1500 Series
Object Number: 1608100 Size: FS
Master Electrical Component List
Cooling System Description and Operation
Control Module References
Engine Coolant Level Switch - 2500 Series
B+ Bus - 1 of 2