September 30, 2005
Package Quantity: 5Find a Distributor
Vehicles with GM 6L45, 6L50, 6L80 and 6L90 transmissions may have complaints of vibration, shudder or roughness, particularly while driving at low speeds with a steady throttle on a level road. This complaint may be more noticeable when driving up an incline. These symptoms can be caused by a broken TCC regulator valve spring in the lower valve body, which causes the TCC slip speed to drop to zero.
With a capable scan tool, monitor the TCC slip during steady throttle input. If the TCC slip remains a constant zero RPM during the shudder or vibration, check the lower valve body for a broken TCC regulator valve spring and replace as needed with Sonnax TCC regulator valve spring 104740-45K.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.