Avalanche 4WD V8-5.3L (2011)
Component Connector End Views See: Diagrams/Connector Views/Connector End Views By Name
Description and Operation
Heated Seats Description and Operation
Electrical Information Reference
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Circuit Testing See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing
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Connector Repairs See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs
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Testing for Intermittent Conditions and Poor Connections See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs
Scan Tool Reference
Control Module References See: Testing and Inspection/Programming and Relearningfor scan tool information
Circuit/System Verification
1. Ignition ON, observe the appropriate scan tool Seat 1 or 2 HVC Data parameters listed below while pressing and releasing the appropriate switch.
The readings should change from Off to Back and Cushion or Back Only.
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Driver Seat HVC Mode
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Passenger Seat HVC Mode
‹› If not the specified values and there are no DTCs set, replace the HVAC control module.
2. If all scan tool parameters test normal and there are no DTCs set, replace the MSM.
Repair Instructions
Perform the Diagnostic Repair Verification See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble
Code Tests and Associated Procedures/Verification Tests and Procedures after completing the diagnostic procedure.
Control Module References See: Testing and Inspection/Programming and Relearningfor memory seat module and HVAC control module replacement,
programming, and setup
