Manufacturer communication — 2006 GMC YUKON DENALI XL

• The model list covers 2000-2014 GM Passenger Cars and Light Duty Trucks in general.

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  2000-2014 GM Passenger Cars and Light Duty Trucks

• It applies to vehicles equipped with OnStar (RPO UE1) and does not apply to vehicles equipped with RPO UE0.

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  Equipped with OnStar® (RPO UE1) Attention: This Bulletin does not apply to vehicles equipped with RPO UE0.

Possible causes

• Canadian wireless service providers plan to decommission their 2G CDMA network through 2015, and OnStar depends on functioning 2G CDMA networks to deliver services.

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  Canadian wireless service providers plan to decommission their 2G Code Division Multiple Access (CDMA) network through 2015. OnStar® currently depends on active and functioning 2G CDMA networks to deliver services.

Steps to confirm (in the document’s order)

1. Before starting the upgrade, inspect the radio to verify that the GM original equipment radio is present and functioning.

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   Prior to starting the upgrade the technician should inspect the radio to verify that the GM original equipment radio is present and functioning.

2. Verify the VIN and customer information on the kit against the VIN of the vehicle; do not install the hardware if the VIN does not match.

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   Technician will verify VIN and customer information on Kit with VIN of installation vehicle (do not install hardware if VIN does not match).

Repair

1. Canadian vehicles that do not have OnStar 3G/4G LTE need a hardware upgrade to keep OnStar services without interruption.

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   As a result, in order to continue to provide OnStar® services without interruption, Canadian vehicles that do not have OnStar® 3G/4G LTE will need a hardware upgrade.

2. The technician uses the Service Programming System (SPS) to activate the hardware.

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   Tech will use Service Programming System (SPS) to activate the hardware.

3. The labor time table gives 1.0 hr for GMC Yukon models 2003-2006.

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   GMC Yukon Models 2003-2006 1.0 hr

Parts

• The parts chart lists part numbers 23235234, 23242476 and 23242478 for GMC Yukon models 2003-2006.

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  GMC Yukon Models 2003-2006 GMC Yukon Models 23235234 23242476 23242478

Caution

• Upgrade kits are VIN specific; installing a kit in another vehicle will cause configuration issues and might damage the module.

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  Upgrade kits are VIN specific, installing a kit in another vehicle will cause configuration issues and might result in damaging the module.

• The Tech 2 cannot communicate with the upgraded OnStar module; GDS 2 must be used for diagnostics specific to the upgraded OnStar system.

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  The Tech 2 is not capable of communicating with the upgraded OnStar® module. GDS 2 must be utilized to perform diagnostics specific to the upgraded OnStar® system on these vehicles.

• A 10 minute wait is required to avoid configuration errors, and the red OnStar Emergency Button must not be pressed at any time during the installation.

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  Notice: A 10 minute wait time is required to avoid configuration errors. Note: Do NOT press the RED (OnStar® Emergency Button) at any time during the installation. This will cause module configuration issues.