MAKING THE SHIFT
So now comes the issue of transmission slipping and no shift lights on the dash. More reading on MUD reveals that the likely candidate is the wiring connector below the PHH. Ok after pulling off the driver side front tire and some of the inner fender plastics. I find the connector. Pull it apart and….
Sure enough this connection is toast. The pins crumble in my hands, no saving that thing. So do a little more reading on MUD and FSM. I find the shift position sensor (correct name??) on the side of the trans and after a whole bunch of non-family friendly language I get the 3 wire ties off the wiring harness so I can get the wiring harness loose and accessible. While everything is still on the truck I use a multi-meter to determine the color code for each shift position on sensor side of the wiring. As the connector fell apart in my hand I wasn’t able to get it all figured out while it was still connected.
So I study the FSM a little more, checking the wiring codes on the electrical diagrams and come up with a plan.
I pull out my box of Delphi?? Connectors. These are great connectors. Easy to install and redo if you mess up the wiring order. They are waterproof (ish) and although they are bulky, because you crimp pins on to both the male and female side of the connector, they add length to the wiring. This is a nice feature when doing a repair of stock harness.
So the connectors I have are mostly 4 wires each. Looks like I am out of 3 wire connectors. I choose a long connector with all 4 pins and row and a square connector, That way I can’t miss plug the connectors later.
I go to work. I start with the sensor side, because its out of the truck and easy. After the connectors are on
I reinstall it in the truck and fish the wiring up above the trans and into the engine compartment.
Now the vehicle side. I find that pulling the dipstick tube for the trans (2 10mm bolts) gives me enough room to work above the starter, but progress is slow. But eventually it all goes together and now I have plugs on both the vehicle and the sensor side. Plug in, turn on the truck, and success I have dash shift lights!!!!
A couple days later I am have a chance to drive the truck, and the transmission dosen’t appear to be slipping in reverse any more. Also seems to be shifting much smoother, so we’ll call that one good!!!!