Diagnostic Fault Information

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.

NOTE:

DTC P0741, P2817, P2818 sets only when there is a hydraulic/mechanical problem.
The components are listed from the least to the most intrusive to service.
Verify the conditions listed in the table do not exist:

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 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: ValveorBore - Scored Spring
Torque Converter Clutch -	P0741, P2817, P2818	Binding, sticking or stuck component:Valve Debris on the component. Damaged component: Valve or Bore - Scored Spring
Torque Converter Assembly	P0741, P2817, P2818	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