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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Automatic Transmission - 10L80 (MF6) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P0960, P0962, P0963, P0964, P0966, P0967, P0968, P0970, P0971, P2670, P2671, P2718, P2720, P2721, P2727, P2729, P2730, P2736, P2738, P2739, P2824, P2826 Or P2827: Transmission Control Solenoid Valve 1-6 Control Circuit >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Cadillac Escalade ESV, and 2018 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
  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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