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 K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1001 (HVAC SYSTEM - MANUAL)
2006 Chevrolet Suburban K2500, 6.0 U
Section 1001 (HVAC System - Manual)
2006 Chevrolet Suburban K2500, 6.0 USECTION Section 1001 (HVAC System - Manual)
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 (C67)
- A/C Low Pressure Switch (C67)
- A/C Refrigerant Pressure Sensor (Gas +C67)
- A/C Refrigerant Pressure Sensor (Diesel+C67)
- Air Temperature Actuator
- Blower Motor
- Blower Motor Control Module X1
- Blower Motor Control Module X2
- HVAC Control Module X2
- HVAC Control Module X3
- Mode Actuator
- Recirculation Actuator (C67)
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- DTC B0228, B0413, B0423, or B3779
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- DTC P0532 or P0533
- DTC P0645
- DTC P0646 or P0647
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- 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
- Too Hot in Vehicle
- Too Cold in Vehicle
- Air Delivery Improper
- Air Recirculation Malfunction
- Afterblow Enabling
- Actuator Recalibration
- Repair Instructions
- Description and Operation
- Special Tools and Equipment
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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.