Sonnax 104740-07K Oversized TCC Regulator Valve Kit for GM 6L45 6L50 6L80 6L90

The Sonnax 104740-07K oversized TCC regulator valve kit restores proper torque converter clutch (TCC) apply function in GM 6L45, 6L50, 6L80, and 6L90 valve bodies. This precision-engineered repair kit addresses common transmission issues caused by bore wear that can lead to performance problems and premature component failure.

Solves Common TCC Problems:

Bore wear at the TCC regulator valve can cause no TCC apply or slipping on engagement, harsh shifts, loss of performance and fuel economy, and fluid overheat. If the valve is stuck in the apply position, harsh TCC apply results, while a valve stuck in the release position causes no TCC apply or TCC slip.

Professional-Grade Components:

• Kit includes TCC regulator valve, shuttle valve, end plug, and spring
• Hardcoat anodized aluminum valve combats premature wear
• Oversized design compensates for worn valve body bores
• Constructed from high-quality aluminum and steel materials

Installation Requirements:

Requires F-104740-TL7 tool kit for proper bore reconditioning (sold separately). Reconditioning the bore and installing this kit restores proper valve function, resulting in proper TCC apply.

Addresses These Symptoms:

• Diagnostic trouble codes P0741 and P0742
• High TCC slip RPM
• Overheated transmission fluid
• Harsh shifts and harsh TCC apply
• Loss of fuel economy
• Failsafe mode operation

This is a professional-grade transmission repair component designed for transmission rebuilders and technicians. Proper installation requires transmission disassembly, valve body service, and the use of specialized reaming tools.