TCC Valve & Spring (4L80-E): Removal
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Raise and support the vehicle. Remove the oil pan and the filter. See DRAINING & REFILLING under LUBRICATION. Disconnect the wiring harness, if necessary. Remove the snap ring. See Figure . Remove the plug. Remove the valve. Remove the spring.