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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1604 (HVAC Systems - Automatic) >> Diagnostic Information and Procedures >> DTC B0263, B0268, B0408, or B0418: Actuator Position >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2. Determines if the HVAC door actuator is stalled.
  2. 3. Applies control circuit voltage to the input of the HVAC door actuator.
Fig 1: DTC B0263, B0268, B0408, Or B0418 (Steps 1-8)
G01479355Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC B0263, B0268, B0408, Or B0418 (Steps 9-12)
G01479356Courtesy of GENERAL MOTORS CORP.
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