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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 336 (Seat Heating System And Seat Cooling System) >> Diagnostic Information and Procedures >> DTC B191A or B191B: Heated Seat Module >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

DTC B191A

  1. Ignition ON.
  2. Verify DTC B191A is not set.
    • If the DTC is set 

      Replace the K29F Seat Heating Control Module - Front.

    • If the DTC is not set 
  3. All OK.

DTC B191B

  1. Ignition ON.
  2. Verify DTC B191B is not set.
    • If the DTC is set 

      Replace the K29R Seat Heating Control Module - Rear.

    • If the DTC is not set 
  3. All OK.
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