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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 10L80 (MHS MHU MQC) - Diagnostic Information And Procedures (1 Of 2) >> Diagnostic Information and Procedures >> DTC P0796 or P0797 >> Diagnostic Fault Information

Diagnostic Fault Information

NOTE:
  • DTC P0796 will set with a hydraulic/mechanical condition or high resistance in the circuit of the component Q77B without setting component/control circuit DTCs.
  • DTC P0797 will set with a hydraulic/mechanical condition.
  • The components are listed from the least to the most intrusive to service.
Component DTC Condition
Q77C Transmission Control Solenoid Valve 3 P0796, P0797
  • Binding, sticking or stuck component: Solenoid Valve
  • Damaged or missing component:
    • Retaining Clip
    • Solenoid Valve
  • 2-3-4-5-7-9-10 and 4-5-6-7-8-9-10-Reverse Clutch Regulator Valve
  • Valve Spring
  • Valve Body Bore
P0796, P0797
  • Binding, sticking or stuck component: Valve
  • Debris on the component.
  • Damaged component:
    • Valve or Bore - Scored
    • Spring
2-3-4-5-7-9-10 Clutch Assembly Oil Feed Circuit P0796, P0797 Blocked or restricted component: Screen
2-3-4-5-7-9-10 Clutch Assembly P0796, P0797
  • Blocked or restricted component: Fluid/oil passage
  • Leaking component:
    • Clutch Piston
    • Clutch Housing
    • Gasket
    • O-Ring
    • Seal
  • Binding, sticking or stuck component: Clutch Plates
  • Damaged or worn component:
    • Clutch Plates
    • Clutch Piston
    • Clutch Housing