Sonnax highlights signal accumulator piston kit for GM 6T40
Sonnax highlights its drop-in signal accumulator piston kit (part number 144740-40K) for signal accumulators in GM 6T40 (Gen. 2 & 3) transmissions. According to the company, this kit allows repair of the valve channel casting without reaming, and the O-ring provides a positive seal against critical pressure loss even in worn bores.
