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.
1992 Chevrolet G 30 Van V8-350 5.7LFACTORY OEM SERVICE PROCEDURE
Control Valve Assembly Replace
1. Disconnect battery ground cable.
2. Disconnect TV cable at throttle lever, then raise and support vehicle.
3. Drain transmission fluid, then remove transmission oil pan, filter and gasket.
4. Remove two bolts that attach auxiliary accumulator valve tube to control valve assembly and accumulator valve body assembly.
5. Remove two tube clamps, gently pry tube loose from oil pump assembly, then the auxiliary accumulator valve body assembly.
6. Disconnect electrical connectors at valve body.
7. Remove detent spring and roller assembly from valve body and remove valve body to case bolts.
8. Remove valve body assembly while disconnecting manual control valve link from range selector inner lever and removing throttle lever bracket from TV link.
9. Reverse procedure to install.
2. Disconnect TV cable at throttle lever, then raise and support vehicle.
3. Drain transmission fluid, then remove transmission oil pan, filter and gasket.
Valve Body:
4. Remove two bolts that attach auxiliary accumulator valve tube to control valve assembly and accumulator valve body assembly.
5. Remove two tube clamps, gently pry tube loose from oil pump assembly, then the auxiliary accumulator valve body assembly.
6. Disconnect electrical connectors at valve body.
7. Remove detent spring and roller assembly from valve body and remove valve body to case bolts.
8. Remove valve body assembly while disconnecting manual control valve link from range selector inner lever and removing throttle lever bracket from TV link.
9. Reverse procedure to install.
Factory Service Tools
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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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