6T40 (MH8), 6T45 (MH7), 6T50 (MHK)

Symptoms:

• Burnt clutches
• Line pressure instability
• Loss of fuel economy
• No line rise
• Pressure loss
• Shift concerns
• TCC apply & release concerns
• TCC codes

Cause:
Loss of oil pressure due to worn components in critical circuits.

Correction:
Recover hydraulic control, restore normal shift operation and save the transmission control unit by installing Sonnax Zip Kit.

This Sonnax Zip Kit targets the root cause of multiple concerns by sealing critical circuit pressure losses in GM Gen. 2 6T30/40/45/50 and Gen. 3 6T35/31/41/46/51 valve bodies. The kit contains uniquely designed parts to prevent the loss of pressures within the main line, clutch apply control, actuator feed and lockup control circuits. The kit also seals multiple circuits known to suffer from end plug leakage or poor checkball sealing. No separate special tools are required for installing these parts.

The Zip Kit quick guide provides clear and easy instructions on one sheet to get the unit sealed up and back on the road quickly. In addition to general rebuilding tips and technical information, the technical booklet included in this kit contains vacuum testing information and locations at other key areas of the valve body.

• Drop-in Zip Valve™ parts install quickly and easily, no reaming or special tools required
• Uniquely designed parts address root causes of valve body concerns by sealing critical pressure circuits
• Detailed technical booklet included with in-depth rebuild and inspection tips for comprehensive valve body repair

• End Plugs (5)
• O-Rings (7) 2 Extra
• TCC Regulator Apply Valve, Shuttle Valve, End Plug, Spring & O-Rings (2) 1 Extra
• AFL Valve, Sleeve, Spring & Retainer Clip
• Checkballs (6)
• Drill Bit .062" Dia. (Not shown)
• Aluminum Plugs (2) .062" Dia, 1 Extra (Not shown)

SONNAX Installation Instructions

Sonnax Zip Kit® - 6T40-GEN2-3-ZIP