Manufacturer communication — 2006 GMC YUKON DENALI XL

• 1995-2016 GM passenger cars and light duty trucks.

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  Models: 1995-2016 All GM Passenger Cars and Light Duty Trucks

• The customer says the odometer appears inaccurate compared with a known distance traveled.

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  A customer may comment that their vehicle's odometer appears to be inaccurate relative to a known distance traveled.

Steps to confirm (in the document’s order)

1. On a straight road over a mile long, mark a GPS waypoint when the odometer (not the trip odometer) rolls over a digit, take a reading when it rolls to the next digit, and compare the actual distance with the odometer.

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   While driving on a straight road, over a mile long, mark the waypoint on the GPS when the odometer (not the trip odometer) rolls over a digit. When it rolls to the next digit, take a reading and compare the two for actual distance traveled versus the odometer reading.

2. Confirm that the original size tires and wheels are fitted and that the axle ratio is as specified on the SPID label and has not been modified.

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   Additionally, dealers should confirm that the original size tires and wheels are mounted on the vehicle and that the axle ratio is as specified per the SPID label and have not been modified.

3. If those are correct and the odometer is beyond the limit, look at the relationship between the VSS and the reluctor on the transmission output shaft, and inspect the associated wiring and connectors closely.

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   If correct and the odometer is beyond the required limit, consideration should be given to the relationship between the VSS and the reluctor on the transmission output shaft. Close inspection should be made of the associated wiring and any connectors in the circuits.

Repair

• Finally, it may be necessary to exchange the instrument panel cluster (IPC) for a replacement unit.

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  Finally, it may be necessary to exchange the IPC with a replacement unit.

Caution

• A tolerance of plus or minus 4% is generally allowed, but each dealer must know the local requirements before verifying an odometer.

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  Generally, a tolerance of plus or minus 4% is allowed, however, it is the responsibility of each dealer to be familiar with local requirements before attempting to verify the accuracy of a customer's odometer.

• Do not compare with another vehicle or with the trip odometer; expressway mileage markers are typically not accurate enough either.

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  Do not compare with another vehicle. Do not compare with the trip odometer. Also, mileage markers on an expressway are typically not accurate enough to perform exact measurements.