Circuit/System Testing
WARNING: This page is about a different car, the 2016 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the conditions listed below do not exist. Carefully inspect each component for that condition. Repair or replace as necessary.
P0776 or P0777 - Control Valve Solenoid Body
Transmission Control Solenoid Valve 2 stuck/sticking-debris, binding, damage valve.
P0776 or P0777 - Control Valve Solenoid Body
1-2-3-4-5-Reverse control valve stuck/sticking - debris, binding, damage valve, scored bore.
P0776 or P0777 - 1-2-3-4-5-Reverse Clutch
1-2-3-4-5-Reverse Clutch piston housing retaining ring not seated or clutch piston seals missing or damaged.
P0776 or P0777 - 1-2-3-4-5-Reverse Clutch
Fluid circuit - plugged with debris or leaks due to missing or damage O-rings, seals or gaskets.