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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1554 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> DTC B1023 >> DTC Descriptor

DTC Descriptor

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1023 05

Integral Switch Performance Short to Ground

DTC B1023 06

Integral Switch Performance Short to Battery or Open

DTC B1023 61

Integral Switch Performance Signal Invalid

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