Erratic Operation of Seat Recall and/or Exit Recall - keywords ajar closed column dic door latch mirror open steering switch wheel

This PI was superceded to include 2008 model year vehicles and change the Tech 2 path for 2007 and 2008 model year vehicles. Please discard PIC4166A.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Seat Recall or Exit Recall for the driver's seat or steering wheel may be inoperative or seem to have erratic operation. This could be the result of the Body Control Module (BCM) not recognizing the driver's door position either open or closed. There are 2 switches in the door latch and 2 door inputs to the BCM from each door. The door inputs are the "Left Door Ajar" and "Left Door Open" data parameters. In order for the seat recall to function correctly, both door switch parameters must change state. Depending how the Tech2 is navigated only 1 of the 2 parameters may be located within the Tech 2®. Below is a Tech 2® path that will allow both parameters to be viewed at the same time.

Inspect the "Left Door Ajar" input and "Left Door Open" input for proper operation. The Tech 2® path listed below allows both data parameters to be viewed at the same time. If either data parameter is not functioning correctly, refer to SI Document ID # 1602023 for the schematic or SI Document ID # 1631958 to begin the Diagnostics System Check.

Diagnostics > Select Model Year 2005, 2006 > Passenger Car > Chevrolet > Y > Body and Accessories > Theft Deterrent > Data Display > Body Control Module > Keyless/Remote Start Data >

Diagnostics > Select Model 2007 or 2008 > Passenger Car > Chevrolet > Y > Body > Uplevel or Navigation Radio > Body Control Module > Data Display > Keyless/Remote Start Data >

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.