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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1139 (HVAC Systems - Manual) >> Diagnostic Information and Procedures >> Re-Calibrating Actuators

Re-Calibrating Actuators

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. 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.
    3. 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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