PIT5076D

Bulletin No.: PIT5076D
Date: Feb-2014
Subject:
Diagnostic Tip - MDI Cable Or SAS Learning Issues When Repairing Service Stability/Traction Message Or
DTC C0710 SYM71
Models:
2010 - 2014 Buick LaCrosse
2011 - 2014 Buick Regal
2014 Cadillac ELR
2010 - 2014 Cadillac SRX
2013 - 2014 Cadillac ATS, XTS
2010 - 2014 Chevrolet Camaro, Equinox
2011 - 2014 Chevrolet Camaro Convertible
2011 - 2014 Chevrolet Cruze, Volt
2013 - 2014 Chevrolet Malibu
2010 - 2014 GMC Terrain
With one or more of the following DTC set C0710 SYM71 C0186 C0196 U0074 U0077 U0125 U0126 U018D
U0293 or Chassis Buss Communication issues
This PI was superseded to update model years. Please discard PIT5076C.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
When diagnosing a vehicle for a “Service Stability / Traction” message, a technician may find DTC C0710 with symptom code 71 (SYM71) set in the EBCM.
For vehicles equipped with electric power steering, a “Service Steering” message may be present with DTC C0710 SYM71 set in the Power Steering Control
Module (PSCM).
Condition 1: When servicing the SAS (steering angle sensor) using GDS a technician may have difficulties in learning the SAS sensor using GDS 2. The display
screen may just continue to read “Waiting” or may display an error message.
Condition 2: Upon rechecking for codes, the technician may find one or more of the following DTCs: U0074 U0077 U180D U0293 U0126 U0125 C0186 C0196.
These DTCs are unable to be cleared.
Recommendation/Instructions
Condition 1: When learning SAS (Steering Angle Sensor), check for Diagnostic Package updates for GDS 2. Think of this just like the Tech2 versions needing
periodic updates.
Condition 2: If, after diagnosing the chassis bus the cause of the fault is not found, please check for an MDI cable to DLC issue. Try a different MDI cable and
perform the SAS learn following the published service information and attempt to clear the communication codes.
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,
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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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