Transmission Valve Body

Replacement Parts > Transmission Replacements

Transmission Valve Body

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What is a transmission valve body?

A transmission valve body is a major component of an automatic transmission. It is a network of valves that directs pressurized hydraulic fluid to actuate the gears and other components as you shift through the gears.

What is the purpose of a transmission valve body?

The purpose of a transmission valve body is to control the hydraulic pressure to the transmission clutch packs and bands to shift the transmission through all its gears.

How do I determine if my transmission valve body is faulty?

Signs that your transmission valve body is faulty include delayed shifts, rough shifts, slipping gears, and a feeling of no power when accelerating.

Can a faulty transmission valve body cause damage to my car?

Yes, a faulty transmission valve body can cause damage to the transmission and other components if it is not addressed.

How do I replace my transmission valve body?

Replacing a transmission valve body is a complicated process, and it is best to consult a professional mechanic. Generally, the steps involved are as follows:

  1. Disconnect the negative battery cable
  2. Drain the transmission fluid
  3. Remove the valve body bolts
  4. Remove the valve body
  5. Install the new valve body
  6. Reinstall the valve body bolts
  7. Fill the transmission with new fluid
  8. Connect the negative battery cable


How often should I inspect my transmission valve body?

It is recommended to inspect your transmission valve body every 30,000-50,000 miles, or as recommended by your car's manufacturer.