Adaptive Cruise Control ACC Inoperative After BCM Replacement - keywords BCM body button column controls fuse gap module program radio repair replace scan seek sensing steering SWC wheel

This PI was superceded to include 2008 model year. Please discard PIC3962.

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

After replacing and programming the Body Control Module (BCM), the Adaptive Cruise Control (ACC) may be inoperative. This could be the result of the steps taken when programming a new BCM. To verify the BCM was configured for adaptive cruise, press the "GAP" button on the steering wheel controls (This control is on all XLR's except V-Series models). If the Navigation Radio seeks or scans when the "GAP" button is pressed, the BCM was set up incorrectly.

Note: The only option when configuring the BCM options is for Adaptive Cruise Control. A new BCM configuration defaults to no options selected.

When replacing and programming a BCM, it is necessary to perform the "BCM Set Up" prior to performing "Program VIN". If "Program VIN" is performed first, the BCM will "lock up" and the Tech 2 will no longer have the ability to select Adaptive Cruise Control (ACC) during the "BCM Set Up". Base XLR's need to have an ASTERISK (*) next to the ACC option prior to saving BCM options.

Note: XLR-V series vehicles do not have ACC. DO NOT select ACC for XLR-V series vehicles.

If the programming steps were not performed in the order listed below, or ACC was not selected for vehicles equipped with the feature, the only repair is to replace the BCM and program it correctly.

1st Perform "BCM Set Up"

2nd Perform "Program VIN"

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.