5L40E, A5S 360R, 4L40E, A4S 200R

Symptoms:

• 1-2 Bind-up
• 3-4 Flare
• 4-5 Concerns
• Clutch distress

Cause:
Valve bore wear results in loss of apply oil, sluggish valve movement and sticking valves causing shift complaints and clutch distress.

Correction:
Install the Sonnax oversized valve kit that fits in any of the three locations (3-4 and 4-5 shift valve, safety mode valve) after refurbishing the bore to eliminate bore wear and sticking valves.

Fits any of three locations.

A stuck or worn safety mode valve in GM 5L40-E, 5L50-E can result in the L/R clutch staying applied on a 1-2 upshift, causing a 1-2 bind-up condition. Wear at the 3-4 or 4-5 shift control valves allows signal and apply oil pressure to exhaust, preventing proper valve movement that causes flares, shift complaints and clutch distress. Reconditioning the bore and installing Sonnax oversized 3-4, 4-5 and safety mode valve kit restores the necessary hydraulic clearances required for proper valve function.

• Oversized valve kit allows elimination of bore wear
• Hardcoat anodized aluminum valves combat premature wear
• Annular grooves prevents future side load wear
• One valve kit can be used in any of three OE locations

Note:
This kit can be used in any of three locations. If using in the safety mode valve location, the control (small) valve is not used.

Kit Contains:

• Shift Valve
• Control Valve
• Spring

SONNAX Installation Instructions