9-7X V8-5.3L (2005)
Suspension Control Module: Customer Interest
Electrical - No Start/MIL ON/False Messages/DTC's Set
TECHNICAL
Bulletin No.: 09-06-03-004C
Date: November 24, 2009
Subject: Intermittent No Crank/No Start, No Module Communication, MIL, Warning Lights, Vehicle Messages or DTCs Set by Various Control
Modules - Diagnosing and Repairing Fretting Corrosion (Disconnect Affected Connector and Apply Dielectric Lubricant)
Models:
2005-2010 GM Passenger Cars and Trucks (including Saturn)
2005-2010 HUMMER H2, H3
2005-2009 Saab 9-7X
Attention:
Any of the intermittent conditions described in this bulletin may be difficult to duplicate.
Supercede:
This bulletin is being revised to add an Attention statement and update the Subject, Condition and Cause information. Please discard Corporate Bulletin
Number 09-06-03-004B (Section 06 - Engine).
Condition
Some customers may comment on any of the following conditions:
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An intermittent no crank/no start
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Intermittent malfunction indicator lamp (MIL) illumination
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Intermittent service lamp illumination
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Intermittent service message(s) being displayed
The technician may determine that he is unable to duplicate the intermittent condition.
Cause
This condition may be caused by a buildup of nonconductive insulating oxidized debris known as fretting corrosion, occurring between two electrical
contact surfaces of the connection or connector. This may be caused by any of the following conditions:
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Vibration
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Thermal cycling
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Poor connection/terminal retention
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Micro motion
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A connector, component or wiring harness not properly secured resulting in movement
On low current signal circuits this condition may cause high resistance, resulting in intermittent connections.
On high current power circuits this condition may cause permanent increases in the resistance and may cause a device to become inoperative.
Representative List of Control Modules and Components
The following is only a representative list of control modules and components that may be affected by this connection or connector condition and DOES
NOT include every possible module or component for every vehicle.
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Blower Control Module
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Body Control Module (BCM)
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Communication Interface Module (CIM)
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Cooling Fan Control Module
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Electronic Brake Control Module (EBCM)
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Electronic Brake and Traction Control Module (EBTCM)
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Electronic Suspension Control (ESC) Module
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Engine Control Module (ECM)
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Heating, Ventilation and Air Conditioning (HVAC) Control Module
