LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1943 (HVAC System - Manual) >> Diagnostic Information and Procedures >> Ambient Air Temperature Display Updating

Ambient Air Temperature Display Updating

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The HVAC control module will not request compressor clutch engagement when the ambient air temperature display is less than 2°C (35°F). In order to inspect compressor clutch operation during cold weather conditions, the vehicle must be brought inside and the ambient air temperature display must be updated. To update the ambient air temperature display on the HVAC control module, perform the following procedure:

With out Scan Tool

  1. Turn ON the ignition.
  2. Simultaneously press the A/C and RECIRC switches.

With Scan Tool

  1. Turn ON the ignition.
  2. Use the Instant OAT Update procedure in the scan tool Special Functions.
scientia non olet · About LEMON Manuals