PIC5910

Bulletin No.: PIC5910
Date: Sep-2013
Subject:
False Code B124B Sym04 Set In HMI Module With No Other Concerns Observed
Models:
2014 Buick LaCrosse
(Built On or Before August 26th, 2013)
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
During diagnosis, a false code B124B sym04 may be found in the HMI module with no other concerns observed.
Recommendation/Instructions
Please do not replace any components due to this code. Reprogram the HMI module with the latest calibrations in TIS2Web, which were released on 9/9/2013
to address this concern.
Note: This is not a USB program event.
Warranty Information
For vehicles repaired under warranty use:
Labor Operation
Description
Labor Time
2880088*
Reprogram Human Machine Interface Module (HMI)
0.3 hr
* This is an unique labor operation for bulletin use only. This will not be published in the Labor Time Guide.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.
WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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