Sonnax introduces 4L60-E, 4L65-E heavy-duty remanufactured valve bodies
Sonnax highlights its heavy-duty remanufactured valve bodies for ’96–’08 GM 4L60-E/65-E transmissions. Two part numbers are offered: GM053-HD, which the company says offers improved sprag/clutch durability in D3 first and second gears; or GM054-HD (pictured above), which adds overrun clutch control to those gears plus D4 first, second and third, the company says.
GM 4L65E: The Purpose of Omitting the #5 Ball
Wayne Colonna describes a 4L65E with a modified valve body spacer plate where the #5 checkball was left out.
