GM#PIC4677D: No Start No Crank Intermittently / No Communication - Cobalt SS Network

Problems/Service/Maintenance Do you have problems with your new 2.0, 2.2, or 2.4L? What kind of service did you have done?

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Old 10-03-2009, 12:52 AM   #1
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GM#PIC4677D: No Start No Crank Intermittently / No Communication

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Document ID: 2352494
#PIC4677D: No Start No Crank Intermittently / No Communication Over High Speed LAN - (Sep 24, 2009)

Subject: No Start No Crank Intermittently/No communication over High Speed LAN

Models: 2004-2010 Chevrolet Malibu
2005-2010 Chevrolet Cobalt
2006-2010 Chevrolet HHR
2008 Chevrolet Malibu Classic
2005-2010 Pontiac G6
2006-2007 Pontiac Pursuit (Canada)
2008-2009 Pontiac G5
2006-2009 Saturn Solstice
2007-2009 Saturn Aura
2007-2009 Saturn Sky
With OnStar (UE1)

This PI was superseded to update models and add codes to list. Please discard PIC4677C.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

A customer may have a complaint of an intermittent no start, no crank condition, and or SES light on with I/P gauges intermittently inoperative while driving. Any of the following DTCs may be accompanied with this complaint. U0121, U0101, U1040, U2100, U2106, U2107, U2108, P0700, P2544, U0073

Before beginning to deep dive into any diagnostics on vehicles equipped with OnStar first check the VCIM connector C3 (Black) to be sure that it has been fully seated. This connector has been increasingly showing up as the root cause for loss of HIGH speed LAN concerns. Verify that the harness is not pulled too tight where the connector could be pulled once installed.

Per engineering request, if the reseating of this connector corrects the concern, please submit a field product report referencing this PI number.

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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Old 10-07-2009, 11:06 PM   #2
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VCIM connector C3 (Black)

what is the VCIM connector C3 (Black)? and where is it located
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