Diagnostic Aids

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

If there is more than one DTC set diagnose the open DTC first. The following conditions are possible causes of the malfunction:

A short between the steering wheel module high and low circuits.
An open or a high resistance in the steering wheel module high or low circuits.
A short-to-ground, or a short-to-voltage in the steering wheel module high circuits or low circuits.
A malfunctioning steering wheel module coil connector
A malfunctioning SDM connector
A malfunctioning steering wheel module
A malfunctioning steering wheel module coil
A malfunctioning SDM