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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Automatic Transmission - 9T45 (M3U) Or 9T50 (M3D M3H) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P0741, P2817 Or P2818: Torque Converter Clutch (TCC) System Stuck Off/Transmission Control Solenoid Valve 8 Stuck >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different variant/trim than selected.
NOTE:

The components are listed from the least to the most intrusive to service.

Component DTC Condition
Q77H Transmission Control Solenoid Valve 8 P0741, P2817, P2818
  • Binding, sticking or stuck component: Solenoid Valve
  • Damaged or missing component:
    • Retaining Clip
    • Solenoid Valve
Torque Converter Clutch Control Valve P0741, P2817, P2818
  • Binding, sticking or stuck component: Valve
  • Debris on the component.
  • Damaged component:
    • Valve or Bore - Scored
    • Spring
  • Torque Converter Clutch Regulator Apply Valve
  • Valve Spring
  • Valve Body Bore
P0741, P2817, P2818
  • Binding, sticking or stuck component: Valve
  • Debris on the component.
  • Damaged component:
    • Valve or Bore - Scored
    • Spring
  • Torque Converter Clutch Blowoff Ball Valve
  • Torque Converter Clutch Blowoff Ball Valve Spring
  • Torque Converter Clutch Blowoff Ball Valve Retainer
P0741, P2817, P2818
  • Binding, sticking or stuck component: Valve
  • Debris on the component.
  • Damaged component:
    • Valve or Bore - Scored
    • Spring
Torque Converter Assembly - Torque Converter Clutch P0741, P2817, P2818
  • Blocked or restricted component: Fluid/oil passage
  • Leaking component:
    • Clutch Piston
    • Clutch Housing
    • Gasket
    • O-Ring
    • Seal
  • Damaged or worn component:
    • Torque converter clutch friction lining worn.
    • Clutch Piston
    • Clutch Housing