Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The following conditions may cause a malfunction to occur in the exhaust solenoid valve:

A short to ground in the control circuit.
An open in the control circuit.
A short to battery in the control circuit.
An open in the battery positive voltage circuit.