GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Jimmy - 4WD 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Actuator Recalibration

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.