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Home >> GMC >> 2021 >> Acadia SL >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> Traction Control/Stability Control Indicator Malfunction >> Component Testing

Component Testing

  1. Ignition OFF, disconnect the harness connector at the S126 Drive Mode Select Switch.
  2. Test for infinite resistance between the signal terminal 1 and the ground terminal 6 with the switch in the open position.
    • If less than infinite resistance 

      Replace the S126 Drive Mode Select Switch.

    • Go to next step: If infinite resistance 
  3. Test for less than 2 Ω between the signal circuit terminal 1 and the ground terminal 6 with the switch in the closed position.
    • If 2 Ω or greater 

      Replace the S126 Drive Mode Select Switch.

    • Go to next step: If less than 2 Ω 
  4. All OK.
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