Component Testing

2009 Chevrolet Uplander LT, 3.9 MSECTION Component Testing
  1. Test for 850-1350 ohms between the voltage signal terminal A and low reference signal terminal B of the appropriate wheel speed sensor.
    • If not within the specified range, replace the wheel speed sensor.
  2. Test for greater than 100 mV AC voltage between terminal A and terminal B of the wheel speed sensor, when spinning the wheel.
    • If less than the specified range, replace the appropriate wheel speed sensor.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.