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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3D), 9T60 (M3T) Or 9T65 (M3V) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0741, P2817, or P2818 >> Diagnostic Fault Information

Diagnostic Fault Information

Component DTC Condition

Control Valve Solenoid Body

  • Q77H Transmission Control Solenoid Valve 8
P0741, P2817, P2818
  • Binding, sticking or stuck component: Solenoid Valve
  • Blocked or restricted component: Fluid/oil passage
  • Damaged or missing component:
    • Bore
    • Retaining Clip
    • Solenoid Valve
    • Spring
    • Valve

Torque Converter Assembly

  • Torque Converter Clutch
P0741, P2817, P2818
  • Blocked or restricted component: Fluid/oil passage
  • Damaged or worn component: Friction Plate
  • Leaking component: Fluid/oil passage

Automatic Transmission Fluid Pump Assembly

  • Torque Converter Clutch Blowoff Ball Valve
  • Torque Converter Clutch Blowoff Ball Valve Retainer
  • Torque Converter Clutch Blowoff Ball Valve Spring
  • Torque Converter Clutch Control Valve
  • Torque Converter Clutch Regulator Apply Valve
  • Valve Body Bore
  • Valve Spring
P0741, P2817, P2818
  • Binding, sticking or stuck component: Valve
  • Debris on the component.
  • Damaged or missing component:
    • Bore
    • Retaining Clip
    • Spring
    • Valve