A common problem in GM 200-4R and 4L60 transmissions is burned bands and/or 3-4 clutches. This failure can be reduced by eliminating throttle boost oil leaka
Sonnax GM 4L60 Transmission
Sonnax Oversized Pressure Regulator Valve - 77917-06
Sonnax C4 Apply Boost Valve Kit - 168740-02K
Sonnax Boost Valve Kit - 56947-02K
GM Transmission Parts - 700R4, 4L60E, 4L65E, 4L70E
A common problem in GM 200-4R and 4L60 transmissions is burned bands and/or 3-4 clutches. This failure can be reduced by eliminating throttle boost
Sonnax 77917-04K TV Boost Valve Kit .500 Dia., Factory-Style Sleeve (No O-Ring)
Sonnax Boost Valve Kit - 36946-02K
Sonnax GM 200-4R Transmission
200-4R Boost Valve & Sleeve - Cobra Transmission
Transmission Parts Finder
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Sonnax 77917-04K TV Boost Valve Kit .500 Dia., Factory-Style Sleeve (No O-Ring)
