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Document ID: 2808281

#PI0639A: Service StabiliTrak Message Displayed in DIC, StabiliTrak Indicator Light On, DTC C0455 and/or C0710 Set - (Mar 23, 2012)

This PI is being revised to update the Recommendation/Instructions information and the Parts Information. Please discard PI0639.

Condition/Concern
In rare cases, some customers may comment about the Service Stabilitrak message being displayed in the DIC. The StabiliTrak® Indicator light may also be on.
When checking the vehicle for DTCs, the electronic brake control module (EBCM) may report C0455 and/or C0710 set as current or in history.

This condition may be caused by an increase in resistance in the circuits connecting the steering position sensor and the EBCM due to fretting corrosion on the connector terminals.
Also, the male to female plastic connector may have excessive clearance that can cause the connector to move up and down.

Note: Fretting corrosion looks like little dark smudges on the electrical terminals and appear where the actual electrical contact is being made. In less severe cases it may be unable to be seen or identified without the use of a magnifying glass.​

Recommendation/Instructions
Important: DO NOT replace the steering position sensor for this condition. The terminal pins on the sensor do not have the same concentration of deposits.​

Subject: Service StabiliTrak Message Displayed in DIC, StabiliTrak Indicator Light On, DTC C0455 and/or C0710 Set

Models: 2007-2012 Cadillac Escalade, Escalade ESV, Escalade EXT
2007-2012 Chevrolet Avalanche, Colorado, Silverado, Suburban, Tahoe
2008-2012 Chevrolet Express
2007-2012 GMC Canyon, Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL
2008-2012 GMC Savana

  1. Disconnect the steering wheel position sensor connector. If the condition cannot be duplicated, the repair is complete. If the DTC resets, replace the steering angle sensor harness side connector with the service pigtail. Refer to the Steering Angle (Position) Sensor connector end view in SI for the correct service connector part number.
  2. Add a piece of Adhesive Back Shim Stock the width of the connector to the flat surface on the male connector. This provides support to the connector to keep it from moving up and down.

    Important: DO NOT apply an excessive amount of dielectric lubricant to the connector, as hydrolock may result when attempting to mate the connector. Use ONLY a clean nylon brush that is dedicated to the repair of this specific condition.
  3. With a one-inch nylon bristle brush, apply dielectric lubricant to both the sensor side and the harness side of the affected connector.
  4. Reconnect the steering wheel position sensor connector and wipe away any excess lubricant that may be present.
  5. Attempt to duplicate the condition by using the following information:
    • DTC Diagnostic Procedure
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Diagnostic Aids
    • Circuit/System Verification

    Parts Information
    This product is currently available from Kent Industries (1-888-YES-KENT).

    Warranty Information
    For vehicles repaired under warranty, use:
    Part Number: 12377900 (In Canada, use 10953529)
    Description: Dielectric Lubricant (50 gram tube)

    P40100 5/8” x 1/8” Adhesive Back Shim Stock

    Kent Automotive Labor Operation Description Labor Time
    N9612 - Lubricate Connector with Dielectric Lubricant 01-0.3 hr

    *This labor operation is for bulletin use only. It will not be published in the Labor Time Guide.

    Note: Any additional time for component R&R to gain access or for repair time greater than 0.3 hr must be submitted as Other Labor Hours and requires appropriate authorization and service management approval.​

    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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Thanks Rich. Great information. This is similar to Service Bulletin 09-06-03-004D that applies to all GM vehicles. I think this corrosion problem is responsible for more electrical problems than people realize, especially intermittent ones.
 
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