Section 344 (HVAC - Automatic)
WARNING: This page is about a different car, the 2021 GMC Sierra 3500 HD and 2021 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic Wiring Diagrams
- Diagnostic Information and Procedures
- HVAC Component Replacement Reference
- DTC B0163 or B0183
- DTC B0193
- DTC B0223, B0233, B023A, B0408, or B0418
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B048D
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B1020
- DTC B2B02, B2B03, B2B0B, B2B0C, or B2B38
- DTC B3933
- DTC B393B
- DTC P0532 or P0533
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P0645, P0646, or P0647
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- Symptoms - HVAC Systems - Automatic
- HVAC System Malfunction
- Air Conditioning Compressor Malfunction
- Afterblow Configuration
- Actuator Recalibration
- Repair Instructions
- Heater and Air Conditioning User Interface Control Replacement
- Heater and Air Conditioning Remote Control Replacement
- Heater Wiring Harness Replacement
- Air Inlet Valve Actuator Replacement
- Mode Valve Actuator Replacement
- Mode Control Cam Replacement
- Temperature Valve Actuator Replacement - Right Side
- Temperature Valve Actuator Replacement - Left Side
- Air Conditioning Evaporator Air Temperature Sensor Replacement
- Sun Load Temperature and Ambient Light and Security Indicator Sensor Replacement
- Description and Operation