- Flare shifts
- Harsh shifts
- Low clutch oil pressure
- No 4th
- No 5th
- No 6th
Excess actuator feed limit (AFL) bore wear allows pressure loss that leads to driveability concerns.
Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized AFL valve.
Oversized Actuator Feed Limit Valve
The function of the actuator feed limit (AFL) valve is to provide regulated pressure to shift solenoids. Wear in the AFL bore causes low clutch pressure and results in transmission slips/harsh shifts. This eventually leads to a loss of 4th through 6th gears, and finally the loss of transmission function. Reconditioning the bore and installing Sonnax oversized AFL valve 144740-01 restores hydraulic control for revived shift operation in all ranges for GM Gen. 1 6T40, 6T45, 6T50 and GM Gen. 2 6T40, 6T45, 6T50 units.
- Hardcoat anodized aluminum valve combats premature wear
- Annular grooves help center valve in bore to reduce future side-load wear
You need this if...
Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.
Click here to view PDF if instructions do not appear below.
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