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HOMESERVICE MANUALSCHEVROLET2019TRAX PREMIER, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 56 (WIPER SYSTEM AND WASHER SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B370BCIRCUIT/SYSTEM VERIFICATION
2019 Chevrolet Trax Premier, AWD

Circuit/System Verification

2019 Chevrolet Trax Premier, AWDSECTION Circuit/System Verification
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.
  1. Ignition ON.
  2. Verify the scan tool Rear Closure Ajar Switch parameter changes between Inactive and Active when opening and closing the liftgate.
    • Go to next step: If the parameter changes 
  3. Verify the Scan Tool Rear Wiper Switch Parameter changes between ON and OFF when cycling the rear wiper switch ON and OFF.
    • If the parameter does not change

      Refer to Circuit/System Testing - Rear Wiper/Washer Switch Malfunction

    • Go to next step: If the parameter changes
  4. Verify the M45 Rear Wiper Motor cycles when commanding the rear wiper ON with the rear wiper switch
    • If the M45 Rear Wiper Motor does not cycle 

      Refer to Refer to Circuit/System Testing - Rear Wiper Motor Malfunction

    • Go to next step: If the M45 Rear Wiper Motor cycles 
  5. Verify the M45 Rear Wiper Motor returns to the park position when the rear wipers are turned OFF
    • If the M45 Rear Wiper Motor does not return to the park position 

      Refer to Circuit/System Testing - Rear Wiper Motor Malfunction

    • Go to next step: If the M45 Rear Wiper Motor returns to the park position 
  6. All OK.
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:

  • • 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.