Question about 2007 Chevrolet Tahoe

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When i press the ac button it blinks three times but does not turn on. 2007 Tahoe LT

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If your vehicle is equipped with automatic climate control, this should help.

Recirculation Operation
The HVAC control module controls the air intake through the recirculation actuator. The recirculation switch closes the recirculation door in order to circulate the air within the vehicle. The outside air switch opens the recirculation door in order to route outside air into the vehicle. Regardless of the blower motor switch position, recirculation is available only in the panel and bi-level mode switch positions. Including the OFF position. The mode switch must be placed in either the panel or bi-level position before the blower motor switch is placed in the OFF position. In order to reduce windshield fogging, outside air is circulated when the mode switch is in the defrost or defog positions. If the recirculation switch is pressed into the ON position when the mode switch is in an unavailable mode position, then the recirculation switch LED will flash 3 times. If the HVAC control module detects a fault with the recirc door the HVAC control module will try to drive the actuator for a predetermined amount of time, to outside air, which is the defaulted position for the recirculation actuator

Posted on Oct 17, 2009

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If the vehicle is equipt with an ambient air temperature display, the sensor also prevents the AC clutch from engaging if the outside air is below as certain tempreture. To test, turn the AC on. Press and hold the AC button at the same time as you press and hold the recirculate button. Hold for 5 to 8 seconds. If this is the cause of the issue, the AC will kick on and you will hear the compressor clutch engage. This should also reset the sensor and correct the issue.

Posted on Mar 28, 2011

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  • Petro572 Apr 13, 2011

    I ran across another vehicle with the same issue. This time the workaround to rest the sensor by pressing the AC and recirculate buttons did not work. It read about 30 degrees lower than actual. Located the sensor attached to the crossmember in front of the radiator. Water had invaded and corroded the connection which was easily visible. Replaced the sensor ($5) and the connector ($28) and problem solved.

  • Tim Taulbee
    Tim Taulbee Apr 16, 2019

    It absolutely worked when I pressed the AC button at the same time as you press and hold the recirculate button and hold for 5 to 8 seconds. It worked the first try. You are a genius. Thank you so much for posting. Problem solved.

  • Paul Roberts
    Paul Roberts May 25, 2019

    This worked for me on 2013 Chevy Tahoe. Thanks!

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System failure --check fuses and relays then freon level

Posted on Jul 03, 2019

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2011 Chevy Silverado, tried the ricirc / AC press and it did not work, AC light keeps flashing with nothing happening

Posted on Jul 03, 2019

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