Shift To Park Message On Drivers Information Center - keywords accessory BCM BTSI DIC ignition IPC no park RKE TCM transmission

This PI was superseded to update concerns to include auto locks. Please discard PIC3667C.

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

Some customers may state that the Drivers Information Center (DIC) displays a "Shift To Park Message" when the vehicle is in park or may experience the Auto Door Lock/Unlock features to be inoperative. This may also be followed by a concern where the ignition mode switch will not go to the off position. This may be the cause of one of the three listed below.

1. Improperly adjusted shifter cable.
2. Secondary park switch circuit concern.
3. Secondary park switch concern.

FIRST

Adjust the shift cable in the park position. Place the shifter in the park position, lift the vehicle and rotate the rear wheels until the park pawl is verified to be engaged (wheels will not move). Release the cable adjustment lock and allow the cable to relax. Re-seat the cable adjustment lock. Refer to SI document 927794 if needed to verify shift cable adjustment procedures.

Second

Check the status of the Internal Mode Switch in the Transmission Control Module (TCM). If the TCM is indicating the correct gear, it will be necessary to check the secondary park switch that is located on the right side of the shifter assembly. This switch is a direct input into the Body Control Module (BCM). This data can be viewed by following the Tech 2 path below.

Third

If the secondary park switch shows Park via Tech 2 data, re-check the shift cable adjustment and make sure the shifter button is not stuck. If both items check OK, replace the shifter assembly. The switch is not currently available separately.

Tech 2 Paths Listed Below...

2007-2008 the path is: Diagnostics > (7) 2007 > Passenger Car > (6) Cadillac > Y > Body > Body Control Module > Data Display > BCM Data > Parameter #16 "Park Switch Auto".

2004 through 2006 the path is: Diagnostics > Select Model Year 2004, 2005 or 2006 > Passenger Car > (6) Cadillac > Y > Vehicle Control Systems > Computer Integrating Systems > Data Display > Body Control Module > Data > Parameter #16 "Park Switch Auto".

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.