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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1143 (Seat Heating System & Seat Cooling System) >> Diagnostic Information and Procedures >> Vented Seat Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, observe the scan tool HVAC Driver Seat Vent Sw. parameter while pressing the driver VENTED seat switch. The readings should change between Inactive and Active.
    • If not the specified value, replace the HVAC Control Module.
  2. If the scan tool displays normal and the driver vented seat is inoperative, refer to Circuit/System Testing .
  3. Observe the scan tool HVAC Psgr. Seat Vent Sw. parameter while pressing the passenger VENTED seat switch. The readings should change between Inactive and Active.
    • If not the specified value, replace the HVAC Control Module.
  4. If the scan tool displays normal and the passenger vented seat is inoperative, refer to Circuit/System Testing below.
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