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Springs, Shift Valve,1-2 & 2-3, 4L80E, GM

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Springs, Shift Valve,1-2 & 2-3, 4L80E, GM
Springs, Shift Valve,1-2 & 2-3, 4L80E, GM4L80E, 4L85E, GM, Springs, Shift Valve,1-2 & 2-3, 4L80E1-2 & 2-3 Shift Valve Springs  Fits 4L80E4L80E 1-2/2-3 Shift Valve Springs Fits
Price: $14.99
Part Number: TAT34994-02KSX

Springs, Shift Valve,1-2 & 2-3, 4L80E, GM

In 4th gear, signal A oil force must overpower the 1-2 shift valve spring and opposing signal B pressure in 4L80-E transmissions. If the 1-2 shift valve does not remain fully stroked, drive oil to second and direct will be cut off or go to exhaust. The reaction area of A is greater than that of B, so the spring is the stroking factor. Complaints of second gear starts, neutral after 2-3 shift or no 4th gear are compounded by worn AFL limit bores, leaking o-rings and solenoids. When AFL oil drops, and signal A becomes less than 58 psi, the 1-2 valve will stall or float. This 3-1 or complaint of 3rd neutral will occur in OD or D with scanner indication of 4th commanded.This new spring kit 34994-02K replaces the original 1-2 shift valve spring and 2-3 shift valve spring.

Features & Benefits

Set allows salvage of stripped cores.
Restores signal pressure to shift solenoids.
Improves shift.

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