1966-Up GM Truck Vortec Telorvek EFI Harness - TH-100
GM Truck Throttle Body Injection 4.3, 5.0, 5.7, 7.4 Engines 1996-1999
(using the 4L60-E or 4L80-E Automatic Transmissions)
These are OBD-II truck wiring systems. The CK truck ECM will be used in this application. The transmission types available were 4L60-E, 4L80-E and manual transmissions.