Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHVAC SYSTEMS - MANUAL
2006 Chevrolet Suburban C2500, 6.0 U
HVAC Systems - Manual
2006 Chevrolet Suburban C2500, 6.0 USECTION HVAC Systems - Manual
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- DTC B0263, B0408, or B0418
- DTC B0414, B0424, or B3770
- DTC B1375
- DTC P0530
- 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 (A/C Only)
- Too Hot in Vehicle - Auxiliary (With Heat and A/C)
- Too Cold in Vehicle - Auxiliary (A/C Only)
- Too Cold in Vehicle - Auxiliary (With Heat and A/C)
- Air Delivery Improper
- Air Delivery Improper - Auxiliary
- Air Recirculation Malfunction
- 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 (W/ D07)
- Recirculation Actuator Replacement (Delphi)
- Recirculation Actuator Replacement (Visteon)
- HVAC Control Assembly Replacement - Front Auxiliary (Front Overhead Control A/C Only)
- 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
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Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.