U0284 GMC - Lost Communication With Active Grille Air Shutter 1 Motor Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Active Grille Air Shutter 1 Motor Module
  • Active Grille Air Shutter 1 Motor Module harness is open or shorted
  • Active Grille Air Shutter 1 Motor Module circuit poor electrical connection
  • Possible symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)
  • U0284 Gmc Description

    The active grille air shutter actuator closes louvers at the front bumper to enhance vehicle aerodynamics in driving situations where cooling and A/C loads are relatively low and high levels of front end airflow are not required. If high levels of airflow are required the active grille air shutter actuator opens the louvers. The control signal from the chassis control module, ignition and ground circuits enable the active grille air shutter actuator to operate. If the conditions for opening the louvers are reached the chassis control module commands the active grille air shutter actuator to open the louvers.
    OBDII Code U0284 Gmc - Lost Communication With Active Grille Air Shutter 1 Motor Module - AutoCodes.com

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