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 MANUALSCHEVROLET2001SUBURBAN C1500REPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHVAC SYSTEM - AUTOMATIC
2001 Chevrolet Suburban C1500
HVAC System - Automatic
2001 Chevrolet Suburban C1500SECTION HVAC System - Automatic
- Specifications
- Schematic Wiring Diagrams
- HVAC Wiring Schematics (Blower Controls - Primary)
- HVAC Wiring Schematics (Compressor Controls - All Models)
- HVAC Wiring Schematics (Air Delivery Controls - Primary)
- HVAC Wiring Schematics (Blower Controls - Auxiliary)
- HVAC Wiring Schematics (Air Delivery Controls - Auxiliary)
- Automatic Auxiliary Device Controls - w/o Sunroof (Tahoe/Yukon)
- Automatic Auxiliary Sensors and Actuators - w/o Sunroof (Tahoe/Yukon)
- Automatic Auxiliary Device Controls - w/o Sunroof (Suburban/Yukon XL)
- Automatic Auxiliary Sensors and Actuators - w/o Sunroof (Suburban/Yukon XL)
- Manual Auxiliary Air Delivery Controls w/Sunroof and Automatic Primary Controls
- Component Locator
- HVAC Component Views
- Top Left of the I/P Components
- RF Corner of the Vehicle - Automatic HVAC Components
- Front Floor Duct (Automatic HVAC)
- RR Side of the Passenger Compartment Components (Tahoe/Yukon w/Auxiliary HVAC)
- RR Side of the Passenger Compartment Components (Suburban/Yukon XL w/Auxiliary HVAC - 1 of 2)
- Overhead Console (Utility w/Automatic HVAC w/Auxiliary A/C)
- Rear Overhead Console (Utility w/Automatic HVAC w/Auxiliary A/C)
- HVAC Module-Rear Auxiliary
- Rear HVAC Harness
- HVAC Connector End Views
- A/C Compressor Clutch
- A/C High Pressure Switch
- A/C High Pressure Switch (Diesel)
- A/C Low Pressure Switch (ALL)
- A/C High Pressure Recirculation Switch
- Air Temperature Actuator
- Air Temperature Actuator - Auxiliary
- Air Temperature Actuator - Auxiliary (Manual Air Delivery)
- Air Temperature Sensor Assembly - Inside (Over Head )
- Air Temperature Sensor - Lower
- Air Temperature Sensor - Lower Auxiliary
- Ambient Air Temperature Sensor
- Air Temperature Sensor - Upper
- Air Temperature Sensor - Upper Auxiliary
- Blower Motor
- Blower Motor - Auxiliary
- Blower Motor Control Processor
- Blower Motor Control Processor - Auxiliary
- Blower Motor Resistor Assembly - Auxiliary - C1
- Blower Motor Resistor Assembly - Auxiliary - C2
- HVAC Control Module
- HVAC Control Assembly - Front Auxiliary (w/Sunroof)
- HVAC Control Assembly - Front Auxiliary ( w/o Sunroof - Suburban/Yukon XL)
- HVAC Control Assembly - Rear Auxiliary
- HVAC Control Processor - Auxiliary
- Mode Actuator
- Mode Actuator - Auxiliary
- Mode Actuator - Auxiliary (Manual Air Delivery)
- Recirculation Actuator
- Sunload Sensor
- HVAC Component Views
- Diagnostic Information and Procedures
- Diagnostic System Check - HVAC Systems - Automatic
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Code Index
- Diagnostic Trouble Code (DTC) List
- DTC B0159
- DTC B0164
- DTC B0174
- DTC B0179
- DTC B0184
- DTC B0229
- DTC B0248
- DTC B0268
- DTC B0408
- DTC B0414
- DTC B0429
- DTC B0434
- DTC B1020
- DTC B3531
- DTC B3579
- DTC B3584
- DTC B3761
- DTC B3764
- DTC U1500
- 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
- Auxiliary Blower Motor Always On (W/O Sunroof)
- Auxiliary Blower Motor Inoperative (W/O Sunroof)
- Auxiliary Blower Motor Malfunction (W/O Sunroof)
- Too Hot in Vehicle
- Too Cold in Vehicle
- Too Hot in Vehicle - Auxiliary (w/o Sunroof)
- Too Cold in Vehicle - Auxiliary (w/o sunroof)
- Air Delivery Improper
- Air Delivery Improper - Auxiliary (W/O Sunroof)
- Air Recirculation Malfunction
- Outside Air Temperature Display Inaccurate or Inoperative
- Actuator Recalibration
- Repair Instructions
- HVAC Control Module Replacement
- Auxiliary Heater and Air Conditioning Control Replacement - Front
- Auxiliary Heater and Air Conditioning Control Module Replacement
- Blower Motor Control Processor Replacement
- Auxiliary Blower Motor Processor Replacement
- Air Inlet Valve Actuator Replacement
- Temperature Valve Actuator Replacement
- Auxiliary Temperature Valve Actuator Replacement
- Mode Valve Actuator Replacement (W/O D07)
- Mode Valve Actuator Replacement (W/D07)
- Auxiliary Mode Valve Actuator Replacement (Tahoe/Yukon)
- Auxiliary Mode Valve Actuator Replacement (Suburban/Yukon XL)
- Duct Air Temperature Sensor Replacement - Upper
- Air Temperature Sensor Replacement - Upper Auxiliary
- Duct Air Temperature Sensor Replacement - Lower
- Air Temperature Sensor Replacement - Lower Auxiliary
- Ambient Air Temperature Sensor Replacement
- Inside Air Temperature Sensor Replacement (Overhead)
- Sun Load Temperature Sensor Replacement
- Description and Operation
- Air Delivery Description and Operation
- Notes
- HVAC Control Components
- Air Speed-Front Control
- Air Speed-Manual Auxiliary HVAC Control
- Air Speed-Automatic Auxiliary HVAC Control
- Air Distribution-Front Control
- Air Distribution-Manual Auxiliary HVAC Control
- Air Distribution-Automatic Auxiliary HVAC Control
- Recirculation Operation
- Auxiliary HVAC Configurations
- Automatic Operation
- Air Temperature Description and Operation
- Air Delivery Description and Operation
- Special Tools and Equipment
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
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.