PIC5491B

Bulletin No.: PIC5491B
Date: Mar-2013
Subject:
OnStar Will Not Power Up
Models:
2006-2013 GM Passenger Cars and Trucks
with OnStar Gen7, Gen8, Gen9, and FCP1 (RPO UE1)
This PI was superseded to update Recommendation section. Please discard PIC5491A.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
A concern may be identified on a Gen7, Gen8, Gen9, or FCP1 VCIM as OnStar system will not power up or no led lit and no response from the OnStar button
assembly. This issue may be accompanied by no communication with the scan tool.
Recommendation/Instructions
With the issue present, turn off the ignition, cancel RAP, and perform a 5 minute power cycle of the VCIM. Then test OnStar keypresses, led status, and verify if
the VCIM has communication with the scan tool. If the system still will not power up, continue with normal diagnostics. If the issue is gone, no further action is
required.
Note: If the "No Power" concern is eliminated and then returns, the VCIM will need to be replaced.
Warranty Information
For vehicles repaired under warranty use:
Labor Operation
Description
Labor Time
*N9991
Customer Concern Not Duplicated (CCND) OnStar®/Bluetooth
.1 - .3
* This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.
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.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may
occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools,
safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that
your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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