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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 999 (HVAC SYSTEM - AUTOMATIC)
2006 Chevrolet Suburban C2500, 6.0 U
Section 999 (HVAC System - Automatic)
2006 Chevrolet Suburban C2500, 6.0 USECTION Section 999 (HVAC System - Automatic)
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- HVAC Component Views
- HVAC Connectors
- A/C Compressor Clutch
- A/C Low Pressure Switch
- A/C Refrigerant Pressure Sensor (Gas)
- A/C Refrigerant Pressure Sensor (Diesel)
- Air Temperature Actuator - Left
- Air Temperature Actuator - Right
- Air Temperature Sensor - Upper Left
- Air Temperature Sensor - Upper Right
- Air Temperature Sensor - Lower Left
- Air Temperature Sensor - Lower Right
- Ambient Air Temperature Sensor - HVAC
- Ambient Light/Sunload Sensor Assembly
- Blower Motor
- Blower Motor Control Module X1
- Blower Motor Control Module X2
- HVAC Control Module X1
- HVAC Control Module X2
- HVAC Control Module X3
- Inside Air Temperature Sensor - Front
- Mode Actuator
- Recirculation Actuator
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- DTC B0158, B0163, B0173, B0178, B0509, or B0514
- DTC B0183 or B0188
- DTC B0228, B0413, B0423, or B3779
- DTC P0532 or P0533
- DTC P0645
- DTC P0646 or P0647
- Symptoms - HVAC Systems - Automatic
- HVAC Compressor Clutch Does Not Engage
- HVAC Compressor Clutch Does Not Disengage
- Blower Motor Always On
- Blower Motor Inoperative
- Blower Motor Malfunction
- Too Hot in Vehicle
- Too Cold in Vehicle
- Air Delivery Improper
- Air Recirculation Malfunction
- Afterblow Enabling
- Actuator Recalibration
- Repair Instructions
- HVAC Control Module Replacement
- Recirculation Actuator Replacement
- Mode Actuator Replacement
- Air Temperature Actuator Replacement - Right Side
- Air Temperature Actuator Replacement - Left Side
- Air Temperature Sensor Replacement - Lower Left Side
- Air Temperature Sensor Replacement - Lower Right Side
- Ambient Air Temperature Sensor Replacement
- Inside Air Temperature Sensor Assembly Replacement
- Sun Load Sensor Replacement
- Description and Operation
- Air Delivery Description and Operation
- Air Temperature Description and Operation
- Special Tools and Equipment
RENDER: 1.0x
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Use the Manual With the Right Hardware
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.