Proud Veteran Owned Business Member!

Frequently Asked Questions

Transmission Lookup


Kit, Valve, Spring, Acceleration Control, End Plug, 4L80-E, GM

<< Previous in Valve Bodies, Valve Components Next in Valve Bodies, Valve Components >>
Oversized Accumulator Control Valve Kit
Price: $59.18
Part Number: TAT-34994-22K-SX
The 4L80-E accumulator control valve controls shift firmness by managing accumulator back pressure. Wear at the valve or bore can lead to multiple symptoms, the most common being reduced line pressure in reverse, elevated line pressure in drive, and soft or harsh upshifts depending on location and magnitude of wear.

When valve/bore wear allows cross-leakage of torque signal/boost oil to exhaust to the sump, line pressure drops causing soft shifts. Alternatively, when bore wear allows drive oil to enter the torque signal passage, line pressure increases and shift feel hardens.

Features & Benefits

Upgrade 91-96 4L80-E accumulator control valve to 97-later calibration
Restore OE accumulator control valve response in 97-later units

You need this if...

A vacuum test fails to yield the indicated 14 or 18 in-hg or greater, depending on the port tested as shown, or if visual wear is detected.

Product Reviews

(0 Ratings, 0 Reviews)
Click Manufacture Category below for better navigation
WE HAVE HUNDREDS OF PARTS NOT LISTED!! If you cannot find the part you are looking for give us a call @ 1-877-406-0617 and we will be glad to help. Monday - Friday 8am - 5pm CST
Browse Categories
Shopping Cart
Your cart is empty.

Our Builders Recommend: