Diagnostic Aids
WARNING: This page is about a different car, the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- EL-49742 harness is a good source for B+ and ground.
- The transfer case drain plug is a good source for ground.
- Typical RPS parameter values:
- 2WD HI = 30-40°
- 4WD Auto = 95-105°
- 4WD HI = 120-135°