I recently bought a 97 K1500 with a 5.7l Vortec and 4l60e. It has 246,000 miles. It had a small underhood fire on the left side of the engine bay but the PO fixed it while also using the wiring harness from a 97 Tahoe 2wd. When i looked under the truck i saw some stuff on the harness unplugged but couldn't tell where any of it would plug into. Also the shift cable seems like it needs to be adjusted and you can't feel the truck go into gear when going through R/N/D. I've also found out that the shift indicator marker doesn't appear in the cluster. The truck does have a 3" body lift if that affects anything and the speedo still works.