PIC-5992-A

Bulletin No.: PIC5992A
Date: May-2016
Subject:
Diagnostic Tip - ABS Lamp On With Any Of The Following DTCs C0035 C0040 Or Unwanted Traction
Control Activation
Models:
2007 - 2013 Chevrolet Impala
2014 - 2016 Chevrolet Impala Limited
2007 - 2008 Pontiac Grand Prix
2007 - 2009 Buick Lacrosse
This PI was superseded to update Model Years. Please discard PIC5992.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Some customers may comment on the ABS and/or TCS light being illuminated. This condition may bemore easily duplicated while turning.
Recommendation/Instructions
1.
Inspect the front Wheel Speed Sensor (WSS) jumper harnesses for any damage or wiring brokeninside the insulation. Running a fingernail down the
wire insulation may help in diagnosing a jumperharness concern
Note: Ohm checking the WSS jumper harness may not identify a concern.
2.
Inspect the front WSS(s) where they pass between the knuckle and the axle.
3.
Inspect for signs of water intrusion into the WSS harness.
Warranty Information
For wiring repairs covered under warranty, please refer to latest version of bulletin 10-00-89-005 forwarranty information on wire/connector repairs.
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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