Manufacturer communication — 2006 GMC YUKON DENALI XL

• 2020 and prior GM passenger cars and trucks.

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  Models: 2020 and Prior GM Passenger Cars and Trucks

• General Motors does not oppose the use of purified nitrogen as an inflation gas for tires.

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  General Motors does not oppose the use of purified nitrogen as an inflation gas for tires.

• Nitrogen molecules are larger than oxygen molecules and are therefore less prone to seeping through the tire casing.

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  Nitrogen molecules are larger than oxygen molecules and, therefore, are less prone to “seeping” through the tire casing.

Caution

• Even occasional inflation with compressed atmospheric air will negate many of the theoretical benefits.

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  Even occasional inflation with compressed atmospheric air will negate many of the theoretical benefits.

• Non GM valve stem caps can lose sealing at the cap, which may allow contaminants or water into the valve stem.

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  Important: The use of non GM valve stem caps can result in a loss of sealing at the cap. This may allow contaminants/water into the valve stem.

• These contaminants can damage or destroy the TPMS, and such damage would not be covered by the GM New Vehicle Warranty.

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  These contaminants can damage/destroy the TPMS and such damage caused by leakage of contaminants would not be covered by the GM New Vehicle Warranty.

• Whether the tires are inflated with atmospheric air or nitrogen, maintaining inflation pressure is critical for overall tire and vehicle performance.

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  Regardless of the inflation media for tires (atmospheric air or nitrogen), inflation pressure maintenance of tires is critical for overall tire, and ultimately, vehicle performance.