Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Hydraulic Control
The selector valve is operated directly by the J-gate and directs fluid flow for P R N D .
Of the four solenoid valves, 3 control shifts and 1 controls converter lock-up. One control valve controls modulating pressure and the other shift pressure.
Regulating valves are used to maintain/control pressure for lubrication, normal operating functions, and the supply to the control valves and shift valves.
In the event of a system fault, the TCM will adopt "limp home" mode.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.