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HOMESERVICE MANUALSCHEVROLET2019TRAX PREMIER, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 96 (SUNROOF SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER SUNROOF MALFUNCTIONCOMPONENT TESTING
2019 Chevrolet Trax Premier, AWD

Component Testing

2019 Chevrolet Trax Premier, AWDSECTION Component Testing
WARNING: This page is about a different car, the 2018 Chevrolet Trax and 2018 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.

Sunroof Switch - Static Test

  1. Ignition OFF, disconnect the harness connector at the S72 Sunroof Switch.
  2. Test for 3.3 - 4.0k Ω between the control terminal 4 and the low reference terminal 1.
    • If not between 3.3 - 4.0k Ω 

      Replace the S72 Sunroof Switch.

    • Go to next step: If between 3.3 - 4.0k Ω 
  3. Test for 390 - 480 Ω between the control terminal 4 and the low reference terminal 1 while pressing the open switch.
    • If not between 390 - 480 Ω 

      Replace the S72 Sunroof Switch.

    • Go to next step: If between 390 - 480 Ω 
  4. Test for 88 - 120 Ω between the control terminal 4 and the low reference terminal 1 while pressing the express open switch.
    • If not between 88 - 120 Ω 

      Replace the S72 Sunroof Switch.

    • Go to next step: If between 88 - 120 Ω 
  5. Test for 1.6 - 2.0k Ω between the control terminal 4 and the low reference terminal 1 while pressing the close switch.
    • If not between 1.6 - 2.0k Ω 

      Replace the S72 Sunroof Switch.

    • Go to next step: If between 1.6 - 2.0k Ω 
  6. Test for 830 - 1030 Ω between the control terminal 4 and the low reference terminal 1 while pressing the express close switch.
    • If not between 830 - 1030 Ω 

      Replace the S72 Sunroof Switch.

    • Go to next step: If between 830 - 1030 Ω 
  7. All OK

Sunroof Tilt Switch - Static Test

  1. Ignition OFF, disconnect the harness connector at the S88 Sunroof Tilt Switch.
  2. Test for 830 - 1030 Ω between the control terminal 4 and the low reference terminal 1.
    • If not between 830 - 1030 Ω 

      Replace the S88 Sunroof Tilt Switch.

    • Go to next step: If between 830 - 1030 Ω 
  3. Test for 88 - 120 Ω between the control terminal 4 and the low reference terminal 1 while pressing the open switch.
    • If not between 88 - 120 Ω 

      Replace the S88 Sunroof Tilt Switch.

    • Go to next step: If between 88 - 120 Ω 
  4. Test for 390 - 480 Ω between the control terminal 4 and the ground terminal 1 while pressing the close switch.
    • If not between 390 - 480 Ω 

      Replace the S88 Sunroof Tilt Switch.

    • Go to next step: If between 390 - 480 Ω 
  5. All OK
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When to See a Mechanic

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

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