Product Description
Tooling Required
6L45 6L50 6L80 6L90 Oversized Actuator Feed Limit Valve
GM 6L45, 6L50, 6L80 and 6L90 units often suffer from shift abnormalities caused by excess wear in the actuator feed limit (AFL) bore. This wear prevents proper regulation of oil pressure supplied to control solenoids, resulting in harsh or soft shifts, solenoid codes, wrong gear starts and clutch/band failure. Reconditioning the bore and installing Sonnax oversized actuator feed limit valve 104740-12 renews the hydraulic integrity of this circuit, restoring normal shift operation and feel.
Proper AFL action depends on correct line pressure supply to AFL valve. If problems are found with line pressure, Sonnax offers oversized pressure regulator and boost valve kit [104520-07K].
- Hardcoat anodized aluminum valve combats premature wear
- Annular grooves help center valve in bore to reduce future side-load wear
Symptoms
- Solenoid performance codes
- Clutch failure
- Wrong gear starts
- Harsh shifts
- Soft shifts
Cause
Actuator feed limit bore wear causes erratic supply pressure to control solenoids.
Correction
Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized actuator feed limit valve.
Contents
- Valve
- End Plug
