Sonnax 144510-09K Pressure Switch Rebuild Kit for GM 6T40/6T45/6T50 Gen 1 Transmissions

The Sonnax 144510-09K pressure switch rebuild kit provides a cost-effective solution for repairing failed pressure switches in GM Generation 1 6T30/6T40/6T45/6T50 transmissions equipped with TEHCM (Transmission Electro-Hydraulic Control Module). This kit eliminates the need to replace the entire expensive TEHCM assembly when pressure switch failures occur.

Common Problems Solved:

• Various trouble codes related to fluid pressure switch failures
• Shift irregularities including slipping, flares, harsh application and bind-ups
• Breached laminate discs preventing proper switch operation
• Transmission failsafe mode triggered by multiple switch failures

Kit Contents:

• Four laminate discs
• Four D-rings
• Four O-rings
• Four spacers (not used on TEHCMs with plastic fluid conduits)

Key Benefits:

• Restores normal pressure switch operation and eliminates trouble codes
• Provides renewed shift performance without TEHCM replacement
• Allows salvage of the transmission control unit
• No special tools required for installation

This rebuild kit is designed for 2008-2012 GM Generation 1 applications including Buick, Chevrolet, GMC, Pontiac, Saturn, Holden, Daewoo, and Opel vehicles equipped with 6T30/6T40/6T45/6T50 transmissions. Since OE replacement switches are not available through factory channels, this Sonnax kit offers the only viable repair option.