4L80E WIRING HARNESS KIT
External wiring harness 1991-up GM/Chevy 4L80E Transmission
This is an external wiring harness for the GMC/Chevrolet 4L80E transmissions. This is a stock # TEC 34986 kit for a 4L80E automatic overdrive transmission, which goes in several Chevrolet/GMC truck (RWD and 4x4) from 1991-up. You know you have a 4L80E because it has 17 pan bolts.
PSI Vortec w/4L60E/4L80E (58X) | Standalone Wiring Harness
All PSI Harnesses are Made in the USA. In addition to wiring harnesses, PSI carries Holley Products, Vintage Air A/C, Dakota Digital Gauges, HPTuners and PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion needs!
4l60e to 4l80e Swap Kit: What you Need to Convert
Apr 19, 2018Here are the main parts that you are going to need in order to make your own 4L60E to 4L80E swap kit. It’s not the easiest swap to do, and a 4L60E can handle a lot of power on its own. Here’s a good article on the 4L60E vs 4L80E. Wiring. You’re going to need to run a new wiring harness to communicate with your ECM/PCM.
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