1995 GMC SONOMA - Transmission Rebuild. This 4L60e gets a complete overhaul with new seals, frictions, discs, and gaskets. Here we assembly the drums, pump, and valve body assembly! #fsptransmissions #God #transmission #mechanic #soecialist #pro #master #automotive #restore #rebuild | Tyler Jackson

GM 4L60 (700-R4) and 4L60E series reaction shafts often suffer from spline twist and wear in high-torque applications due to the soft, weak steel of OE and most aftermarket shafts. This new Sonnax heavy duty reaction shaft (#74602-01K) is made from high-strength chromoly steel alloy to eliminate these problems. It's also a universal fit for all carrier styles thanks to the included bearing and shim, making it an easy, reliable way to build extra durability into any big power 4L60E transmission.