Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the KS for physical damage. A KS that is dropped or damaged may cause a DTC to set.
Inspect the KS for proper installation. A KS that is loose or over torqued may cause a DTC to set. Refer to Fastener Tightening Specifications .
The KS mounting surface should be free of burrs, casting flash, and foreign material.
The KS must be clear of hoses, brackets, and engine electrical wiring.