Diagnostic Aids

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

The direction IMS assembly can be damaged by electric current exceeding 25 mA. Test the IMS assembly for an open condition whenever a short to voltage condition is observed.
The direction IMS is a non-serviceable part of the manual shift shaft position switch.