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 1921 (SEAT HEATING SYSTEM AND SEAT COOLING SYSTEM)
2006 Chevrolet Suburban K2500, 6.0 U
Section 1921 (Seat Heating System And Seat Cooling System)
2006 Chevrolet Suburban K2500, 6.0 USECTION Section 1921 (Seat Heating System And Seat Cooling System)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Wiring Schematics
- Heated/Cooled Seat Wiring Schematics
- Heated Seat- Driver (AN3 without KB6)
- Heated Seat- Passenger (AN3)
- Heated/Cooled Seat Module Power and Ground (KB6)
- Heated/Cooled Seat- Driver (KB6)
- Heated/Cooled Seat- Passenger (KB6)
- Heated/Cooled Seat- Driver (X88 or Z88, with KB6)
- Heated/Cooled Seat- Passenger (X88 or Z88, with KB6)
- Heated Seat- Rear (KA6)
- Heated Seat- Rear (KA6 with HP2)
- Heated Seat- Driver (KA1)
- Heated Seat- Passenger (KA1)
- Heated Seat - Driver (SPO Heated Seats)
- Heated Seat - Passenger (SPO Heated Seats)
- Heated/Cooled Seat Wiring Schematics
- Diagnostic Information and Procedures
- Diagnostic Code Index
- DTC B1925 or B2170 (w/o HP2 with Memory)
- 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 Instructions
- DTC B1925 or B2170 (HP2 or Dealer Installed, w/o Memory)
- 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 Instructions
- DTC B1925 or B2170 (Rear Seat)
- 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 Instructions
- DTC B1935 or B2180 (w/o HP2 with Memory)
- 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 Instructions
- DTC B1935 or B2180 (HP2 w/o Memory)
- 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 Instructions
- DTC B1935 or B2180 (Dealer Installed)
- DTC B2345 (w/o HP2 with Memory)
- Diagnostic Instructions
- DTC Descriptor
- 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 Instructions
- DTC B2345 (HP2 w/o Memory)
- 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 Instructions
- DTC B2345 (Rear Seat)
- 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 Instructions
- DTC B2345 (Dealer Installed)
- DTC B2425 or B2430 (w/o HP2 with Memory)
- 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 Instructions
- DTC B2425 or B2430 (HP2 w/o Memory)
- 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 Instructions
- DTC B2425 or B2430 (Rear Seat)
- 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 Instructions
- DTC B2425 or B2430 (Dealer Installed)
- DTC B2435 or B2440 (w/o HP2 with Memory)
- 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 Instructions
- DTC B2435 or B2440 (HP2 or Dealer Installed w/o Memory)
- 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 Instructions
- DTC B2508 or B2509 (w/o HP2 with Memory)
- 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 Instructions
- DTC B2508 or B2509 (HP2 w/o Memory)
- 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 Instructions
- DTC B2508 or B2509 (Rear Seat)
- 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 Instructions
- DTC B2508 or B2509 (Dealer Installed)
- Symptoms - Seat Heating and Cooling
- Heated Seat Inoperative (Chevrolet or GMC, KA1)
- Heated Seat Inoperative (Cadillac, KA1)
- Heated Seat Inoperative - Rear
- Heated/Cooled Seats Inoperative (Cadillac, KB6)
- Heated/Cooled Seats Inoperative (Chevrolet or GMC, KB6)
- Repair Instructions
- Front Seat Heater Switch Replacement
- Front Seat Heater Control Module Replacement (with HP2)
- Driver or Passenger Seat Back Cushion Heater Replacement (Tahoe with HP2)
- Driver or Passenger Seat Back Cushion Heater Replacement (without HP2)
- Driver or Passenger Seat Back Cushion Heater Replacement (Escalade with HP2)
- Driver or Passenger Seat Cushion Heater Replacement (with HP2)
- Driver or Passenger Seat Cushion Heater Replacement (without HP2)
- Rear Seat Heater Control Module Replacement
- Rear Seat Cushion Heater Replacement
- Module Replacement - Seat Climate Control - Front Seat
- Driver or Passenger Seat Back Ventilation Heating and Cooling Blower Replacement
- Driver or Passenger Seat Cushion Ventilation Heating and Cooling Blower Replacement
- Driver Seat Cushion Ventilation Heating and Cooling Module Replacement
- Passenger Seat Cushion Ventilation Heating and Cooling Module Replacement
- Description and Operation
- Heated Seats Description and Operation (KA1)
- Heated Seats Description and Operation (KA6)
- Heated/Cooled Seats Description and Operation
- Notes
- Air Circulation
- Seat Heat/Cool Ventilation Module
- Climate Control Seat System
- Climate Control Seat Module Power and Ground
- Climate Control Seat Module
- Memory Seat Module
- Modes of Operation
- Heated and Cooled Seat Switches / HVAC Control Module
- Temperature Sensors
- Blower Motors
- Heated Seat Operation
- Cooled Seat Operation
- Fault State
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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.