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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 995 (HVAC Systems - Automatic) >> Diagnostic Information and Procedures >> DTC B013A: Air Conditioning (A/C) System Performance >> Test Description

Test Description

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

  1. 3:  This step determines the diagnostic that must be followed to pinpoint the failure.
DTC B013A

Step Action Yes No
1 Did you perform the Diagnostic System Check - HVAC Automatic? Go to Step 2  Go to Diagnostic System Check - HVAC Systems - Automatic 
2
  1. Install a scan tool.
  2. Turn ON the ignition.
Is B013A set?		 Go to Step 3  Go to Diagnostic Aids
3  Does the blower motor and A/C system operate properly? Go to Step 4  Go to Too Hot in Vehicle 
4
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within Conditions for Running and Conditions for Setting the DTC as specified in the supporting text.
Does the DTC reset?		 Go to Step 2  -
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