Manufacturer communication — 2006 GMC YUKON DENALI XL

• Applies to 2015 and prior GM passenger cars and trucks.

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  Models: 2015 and Prior GM Passenger Cars and Trucks

• GM does not oppose the use of purified nitrogen to inflate tires.

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

Possible causes

• Nitrogen molecules are larger than oxygen molecules, so they seep through the tire casing less readily.

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

Caution

• With GM original equipment TPC tires, the realized benefit to the customer of inflating with purified nitrogen is expected to be minimal.

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  Given those theoretical benefits, practical limitations, and the robust design of GM original equipment TPC tires, the realized benefits to our customer of inflating their tires with purified nitrogen are expected to be minimal.

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

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

• Whether the tire is filled with air or nitrogen, maintaining inflation pressure is critical for tire and vehicle performance.

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  Important: 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.