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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1484 (HVAC Systems - Automatic) >> Diagnostic Information and Procedures >> Re-Calibrating Actuators (Auxiliary HVAC) >> Preferred Method (w/Scan Tool)

Preferred Method (w/Scan Tool)

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clear all DTCs
  2. Place the ignition switch in the OFF position.
  3. Install the auxiliary HVAC actuator.
  4. Re-connect all previously disconnected components.
  5. Place the ignition switch in the RUN position.
  6. With the scan tool, initiate the HVAC Actuator Recal. feature of the RH VAC/RSA module Special Functions menu.
  7. Verify that no DTCs have set as current DTCs.
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