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 Controls: Notes
The valve bodies include the main valve body, the regulator valve body, the secondary valve body, the stator shaft support, and the manual valve body. The ATF pump is driven by splines on the end of the torque converter which is attached to the engine. Fluid flows through the main regulator valve to maintain specified pressure through the manual valve body, directing pressure to each of the clutches. The hydraulic control body is attached to the secondary valve body, which includes the main shift hydraulic circuit, the solenoid valves, the hydraulic pressure switches, etc. to shorten the fluid passage and optimize the hydraulic pressure. The secondary valve body has shift solenoid valves A and B, line pressure solenoid valve A, the line pressure switch, transmission fluid pressure switch B (3rd clutch), transmission fluid pressure switch E (6th clutch), and automatic transmission (A/T) clutch pressure control solenoid valves A, B, C, and D, and is mounted to the transmission housing. Shift solenoid valve C is mounted to the torque converter housing.
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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.
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