Manufacturer communication — 2006 GMC YUKON DENALI XL

• Applies to 2014 and prior GM cars and trucks (U.S. only).

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  2014 and Prior GM Cars and Trucks (U.S. Only)

• Vehicles that have had deposit related concerns may especially benefit from TOP TIER Detergent Gasoline.

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  Those vehicles that have experienced deposit related concerns may especially benefit from the use of TOP TIER Detergent Gasoline.

Possible causes

• The EPA requires a detergent additive in all gasoline sold in the U.S., but the requirement is minimal and in many cases not sufficient to keep engines clean.

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  The EPA requires that all gasoline sold in the U.S. contain a detergent additive. However, the requirement is minimal and in many cases, is not sufficient to keep engines clean.

Repair

• Clean engines help fuel economy, performance and emissions, and using TOP TIER Detergent Gasoline helps reduce deposit related concerns.

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  Clean engines help provide optimal fuel economy and performance and reduced emissions. Also, use of TOP TIER Detergent Gasoline will help reduce deposit related concerns.