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Home >> GMC >> 2022 >> Terrain SLE, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T45 (M3U) Or 9T50 (M3D M3H) - Diagnostic Information And Procedures (1 Of 2) >> Diagnostic Information and Procedures >> DTC P0960, P0962-P0964, P0966-P0968, P0970, P0971, P2670, P2671, P2718, P2720, P2721, P2812, P2814, P2815, P281B, P281D, or P281E >> Component Testing

Component Testing

  1. Test the resistance between the test points:Terminal 1 @ Q77 Transmission Control Solenoid Valve & Terminal 2 @ Q77 Transmission Control Solenoid Valve

    Verify the value is within the range listed in the table:Transmission Solenoid Information

    • If not in the specified range 

      Replace the component:Q77 Transmission Control Solenoid Valve

    • Go to next step: If in the specified range 
  2. Test for infinite resistance between the test points:Terminal 1 @ Q77 Transmission Control Solenoid Valve & Ground
    • If less than infinite resistance 

      Replace the component:Q77 Transmission Control Solenoid Valve

    • Go to next step: If infinite resistance 
  3. All OK.
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