Manufacturer communication — 2006 GMC YUKON DENALI XL

• Applies to 2022 and earlier GM passenger cars and light duty trucks.

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  GM Passenger Cars and Light Duty Trucks 2022 and Prior

• Only some vehicles built prior to the 2008 model year have tire pressure monitoring; check vehicle build and RPO information to be sure.

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  Some vehicles built prior to the 2008 model year or sold in Canada have tire pressure monitoring; check vehicle build and RPO information to be sure.

• A Check Tire Pressure / Low Tire Pressure message or light stays on solid with no system codes set; the system is operating as designed and correcting the tire pressure resolves it.

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  A Check Tire Pressure / Low Tire Pressure message/light will stay on solid and no system codes are set. The TPM system is operating as designed. Correcting the tire pressure will resolve the issue.

• A Service Tire Monitor message or light blinks and system codes set; this is a condition to be diagnosed and corrected.

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  A Service Tire Monitor message/light will blink and system codes WILL set. There is a condition that should be diagnosed and corrected.

• The Low Tire telltale must come on when a tire's pressure drops to 75% of the Recommended Cold Inflation pressure.

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  The Low Tire telltale MUST come on when a tire's pressure drops to 75% of the Recommended Cold Inflation pressure

Possible causes

• If one or more tire pressure sensors do not transmit for 18 minutes of driving, the system sets a code, displays a message and blinks the light for about a minute, after which it stays on solid for the rest of the ignition cycle.

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  If one or more tire pressure sensors does not transmit information for 18 minutes of driving, the TPM system WILL set a code, display a message, and BLINK the light for about a minute, after which the light will stay on solid for the remainder of the ignition cycle.

• A low pressure warning can appear when tires were rotated and pressures adjusted but the new positions were not re-learned, on vehicles with different placard pressures front and rear.

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  The tires may have been rotated, pressures adjusted, and the new tire positions were NOT re-learned into the vehicle. This can occur on vehicles that have two different placard pressures for front and rear tires.

Steps to confirm (in the document’s order)

• When activating a sensor, place the antenna tip of the EL 52545 tool on the sidewall, perpendicular to the tire and close to the valve stem.

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  When activating a sensor, the antenna tip of the TPM Test EL 52545 must be placed on the sidewall, perpendicular to the tire, and close to the valve stem (see photo above).

Repair

• Re-learn the TPM sensors and adjust the tire pressure to the placard values after every tire rotation.

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  Re-learn the TPM sensors and adjust the tire pressure to the placard values after every tire rotation.

Caution

• Never set the tire pressure below the placard value regardless of tire or ambient temperature.

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  Never set the tire pressure below the placard value regardless of tire temperature or ambient temperature.

• To prevent electrostatic discharge damage to the tire pressure sensor, the technician should be statically discharged before checking or filling tires.

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  Note: In order to prevent possible electrostatic discharge damage to the Tire Pressure Monitoring Sensor (TPMS), the technician should be statically discharged before checking or filling tires.