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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1668 (HVAC Systems - Automatic) >> Diagnostic Information and Procedure >> Re-Calibrating Actuators

Re-Calibrating Actuators

WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

Use the following steps to perform the calibration update:

  1. Turn OFF the ignition.
  2. Remove the battery positive voltage circuit fuse of the HVAC Control Module.
    IMPORTANT: The module memory will not clear if the battery positive voltage circuit fuse is installed in less than 60 seconds.
  3. Wait 60 seconds.
  4. Install the fuse.
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