GM Service Manual Online
For 1990-2009 cars only

Theft deterrent Immobilizer Is Optional - keywords L91 BAH communication crank disabled inoperative light module no security stall start theft theftdeterrent

Subject:Theft deterrent Immobilizer is Optional

Models:2004-2008 Chevrolet Aveo
2005-2006 Pontiac Wave (Canada only)



This PI was superseded to update model years. Please discard PIC3087C.


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

Condition/Concern:

The theft deterrent Immobilizer system is an optional feature for these vehicles. The current service information mentions programming the Immobilizer system, you might also notice that you have no communication with the Immobilizer.

Recommendation/Instructions:

The Immobilizer system is only used on the these vehicles that have a "BAH" RPO option code. Check the RPO Options to see if you have the "BAH" option.

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.