Section 339 (HVAC Systems - Manual)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic System Check - HVAC Systems - Manual
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- DTC B0263, B0408, or B0418: Actual Door Position Is Not Near The Commanded Door Position
- DTC B0414, B0424, or B3770: Actuator
- DTC B1375: No Ignition Voltage On The Ignition 3 Voltage Input
- DTC P0530: A/C Refrigerant Pressure Sensor Signal
- Symptoms - HVAC Systems - Manual
- HVAC Compressor Clutch Does Not Engage
- HVAC Compressor Clutch Does Not Disengage
- Blower Motor Always On
- Blower Motor Inoperative
- Blower Motor Malfunction
- Blower Motor Always On - Auxiliary
- Blower Motor Inoperative - Auxiliary
- Blower Motor Malfunction - Auxiliary
- Too Hot In Vehicle
- Too Cold in Vehicle
- Too Hot in Vehicle - Auxiliary (With Heat and A/C)
- Too Hot in Vehicle - Auxiliary (A/C Only)
- Too Cold in Vehicle - Auxiliary (With Heat and A/C)
- Too Cold in Vehicle - Auxiliary (A/C Only)
- Air Delivery Improper
- Air Delivery Improper - Auxiliary
- Re-Calibrating Actuators
- Repair Instructions
- HVAC Control Module Replacement
- Air Temperature Actuator Replacement - Right
- Air Temperature Actuator Replacement - Left
- Mode Actuator Replacement (W/O D07)
- Mode Actuator Replacement (Visteon)
- Recirculation Actuator Replacement (Delphi)
- Recirculation Actuator Replacement (Visteon)
- HVAC Control Assembly Replacement - Front Auxiliary (Front Overhead Control A/C Only)
- HVAC Control Assembly Replacement - Front Auxiliary (Front Overhead Control Heat and A/C)
- HVAC Control Assembly Replacement - Rear Auxiliary
- HVAC Control Processor Replacement - Auxiliary
- Blower Motor Switch Replacement - Auxiliary
- Air Temperature Actuator Replacement - Auxiliary
- Mode Actuator Replacement - Auxiliary (Tahoe/Yukon)
- Mode Actuator Replacement - Auxiliary (Suburban/Yukon XL)
- Description and Operation
- Air Delivery Description and Operation
- Air Temperature Description and Operation
- Special Tools and Equipment