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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 969 (HVAC Systems - Automatic) >> Diagnostic Information and Procedures >> DTC B013A: Air Conditioning (A/C) System Performance >> Conditions for Setting the DTC

Conditions for Setting the DTC

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 HVAC control module is requesting engine ON for A/C and detects duct temperatures warmer than 120 counts for more than 30 minutes.

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