LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2021 >> Acadia AT4 >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> Traction Control/Stability Control Indicator Malfunction >> Component Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.