| Subject: | Intermittent Dead Battery |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some 2005 Cadillac STS built prior to 05/17/05 may experience a condition in which the Instrument Panel Module (IPM) does not recognize that the transmission has been shifted into park. This condition can cause the vehicle to be in the Accessory ignition
mode when the engine is shut off and may result in a dead battery.
Recommendation/Instructions:
Using the Tech 2 scan tool, monitor the Park Position Input to the IPM.
| • | Instrument Panel Module |
If the Park Position Input displays "Out Of Park", replace the shifter assembly.
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.
