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GMC Yukon XL 2000–2006

GMC Yukon XLModel years 2000–2006

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2 conditions added

Common on this vehicle:Air conditioning or heater

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4 records state a cause or a remedy. Each record is shown as short labels in the order fault → finding the cause → correction. Press a label to narrow to the records that state it.

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  1. Manufacturer communication2000–2006 GMC YUKON XL ・ 2020-08-10(3 earlier editions of this document folded here)

    Heater-Vent-Air Conditioning Blows Warm Air

    1. 1Fault

      • The A/C blows warm or A/C performance is poor.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. Have these readings available: A/C high and low pressures, high side sensor reading, A/C compressor duty cycle, refrigerant solenoid valve command (if equipped), outside temperature, humidity and vent temperature.
      2. With an automatic HVAC system, read with the scan tool the inside temperature sensor, the outside temperature sensor, the duct temperature sensors and the evaporator temperature sensor (if equipped).

    3. 3Correction

      This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.

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    From the manufacturer’s document

    • Applies to：Applies to all 2000 - 2021 models.
    • Condition：The A/C blows warm or A/C performance is poor.
    • Confirm：Have these readings available: A/C high and low pressures, high side sensor reading, A/C compressor duty cycle, refrigerant solenoid valve command (if equipped), outside temperature, humidity and vent temperature.
    • Confirm：With an automatic HVAC system, read with the scan tool the inside temperature sensor, the outside temperature sensor, the duct temperature sensors and the evaporator temperature sensor (if equipped).

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.

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