Fail Case 4
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The IMS indicates an invalid range or the IMS state and the ECM Park/Neutral signal do not match for 6.25 seconds or greater.