GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 Yukon - 4WD 🢒 Suspension 🢒 Automatic Level Control 🢒 Automatic Level Control Schematics
Figure 1:

Compressor Motor Control
Object Number: 848742 Size: FS
Master Electrical Component List
Automatic Level Control Description and Operation
Suspension Level Control
IGN 3
ABS, VSES/ECAS, STUD #1, STUD #2, TBC BATT
ABS, VSES/ECAS, STUD #1, STUD #2, TBC BATT
IGN 3
G401, G402, G403
Figure 2:

Suspension Level Control
Object Number: 848743 Size: FS
Master Electrical Component List
Automatic Level Control Description and Operation
Conpressor Motor Control
RTD, RR WPR, EAP, SUNROOF, IPC/DIC, SEO B1
RTD, RR WPR, EAP, SUNROOF, IPC/DIC, SEO B1
Suspension Position Sensors