Manufacturer communication — 2006 GMC YUKON DENALI XL

• The model list covers 2000-2009 GM Passenger Cars and Light Duty Trucks in general.

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  2000-2009 GM Passenger Cars and Light Duty Trucks

• By name, the list gives 2010-2013 GMC Acadia, Sierra models and Yukon models.

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  2010-2013 GMC Acadia, Sierra Models, Yukon Models

Steps to confirm (in the document’s order)

1. On GSM-upgraded vehicles, the GDS 2 scan tool must be used to communicate with the Telematics Communication Interface Control Module (TCICM), or OnStar module.

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   When performing scan tool communications on GSM-upgraded vehicles, the GDS 2 scan must be used for the Telematics Communication Interface Control Module (TCICM), or OnStar® Module.

2. Because GDS 2 will not decode the VIN of a vehicle originally supported by the Tech 2, a manual selection must be performed.

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   Since GDS 2 will not decode the VIN of a vehicle originally supported by the Tech 2, a manual selection must be performed.

3. In GDS 2, select Additional Options, then the OnStar Canada GSM option.

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   Select the Additional Options. Select the OnStar Canada GSM option.

4. Then select Module Diagnostics, then the Telematics Communication Interface Control Module option.

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   Select the Module Diagnostics option. Select the Telematics Communication Interface Control Module option.

Caution

• The bulletin only applies to vehicles involved in the Canadian OnStar cellular communication upgrade; verify in the Investigate Vehicle History (IVH) that the upgrade has been completed before proceeding.

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  This Bulletin only applies to vehicles that have been involved in the Canadian OnStar® cellular communication upgrade. Verify in the Investigate Vehicle History (IVH) if the upgrade has been completed before proceeding with this Bulletin.

• Communication with all other modules on these vehicles is still performed with the Tech 2; not using the GDS 2 for the TCICM or OnStar module may result in an incorrect diagnosis.

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  All scan tool communications with other modules on these vehicles continue to be performed using the Tech 2. Failure to use the GDS 2 to communicate with the Telematics Communication Interface Control Module (TCICM), or OnStar® Module, may result in a incorrect diagnoses.