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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 207 (Seat Heating System & Seat Cooling System) >> Diagnostic Information and Procedures >> Heated Seat Inoperative (Cadillac) >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON, observe the HVAC control panel while pressing and releasing the appropriate heated seat switch. The appropriate switch symbol should be displayed on the control panel.
    • If the symbol is not displayed, replace the HVAC control module.
  2. If the heated seat switch symbols test normal and there are no DTCs set, replace the MSM.
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