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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> Actuator Recalibration >> Alternate Method (without Scan Tool)

Alternate Method (without Scan Tool)

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Do not operate any HVAC controls while the HVAC control module is calibrating as this may interrupt the process. If interrupted, improper HVAC performance will result.
  1. Ignition OFF/ Vehicle OFF.
  2. Remove the HVAC control module fuse for a minimum of 10 s.
  3. Install the HVAC control module fuse.
  4. Start the vehicle.
  5. Wait 40 s for the HVAC control module to self-calibrate.
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