Manufacturer communication — 2006 GMC YUKON DENALI

• Covers 2000-2014 GM passenger cars and light duty trucks.

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  2000-2014 GM Passenger Cars and Light Duty Trucks

• Vehicles equipped with OnStar (RPO UE1) are covered.

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  Equipped with OnStar® (RPO UE1)

Possible causes

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

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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)

• Before starting, 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.

Repair

1. Canadian vehicles without 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 labor time table lists 1.0 hr for 2003-2006 GMC Yukon models.

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   GMC Yukon Models 2003-2006 1.0 hr

Caution

• Hardware upgrade sets are VIN specific and must be installed on the vehicle they were ordered for.

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  Hardware upgrade sets are VIN specific and must be installed on the vehicle that the set was ordered for.

• 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.

• Before reprogramming, verify that battery voltage is more than 12 volts but less than 16 volts; the battery must be fully charged first.

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  Verify the battery voltage is more than 12 volts but less than 16 volts before proceeding with reprogramming. The battery must be fully charged BEFORE reprogramming.

• Do not press the red OnStar Emergency Button at any time during the installation; it causes module configuration issues.

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  Do NOT press the RED (OnStar® Emergency Button) at any time during the installation. This will cause module configuration issues.

• Canadian OnStar equipped vehicles travelling into the United States are to be serviced as any U.S. vehicle would be.

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  Canadian OnStar® equipped vehicles travelling into the United States are to be serviced as would any U.S. vehicle while visiting, or relocating, to the United States.