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For 1990-2009 cars only

Low or Completely Discharged Battery - keywords battery charge dead discharge draw intermittent

Subject:Low or Completely Discharged Battery

Models:2004-2007 Cadillac XLR
2005-2007 Chevrolet Corvette



This PI has been revised to update the model list. Please discard PIC3454.


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

Condition/Concern:

Some customers may state that the battery has a low charge or is completely discharged at times.

Recommendation/Instructions:

After normal diagnosis, a concern can not be located, check with the customer or the Sales Department and see if the vehicle was equipped with a "LoJack" security system or similar security system. These systems use a small transmitter or GPS locator that is hidden in the vehicle and is usually unknown to the technician. These transmitters are usually installed in the "hot at all times" dome lamp circuits and prevent the Body Control Module (BCM) from entering the sleep mode. Please check with the customer and Sales Department before replacing any parts on the vehicle.

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.