GM Performance Programmable Transmission Controller - 19212657
Transmission Controller, 4L60-E, 4L65-E, 4L70-E, 4L80-E and 4L85-E Automatic. Required when using a GM electronically controlled automatic transmission. Includes wiring harness, software and connector for laptop computer....
1975-88 TH350/TH400 Transmission Modulator Valve
Replace a leaking modulator valve on your transmission to restore proper operation and gear changes. The modulator valve is a device that regulates hydraulic line pressure in a transmission to meet varying load conditions....