Would you happen to have the wiring schematic for the PRNDL switch (12pin connector) located on driver side of a 2005 2WD Silverado w/ 4L60E trans? Original harness and connector damaged beyond repair, bought new harness w/connector but can't figure out where they get connected to or which Pins on PCM they get pinned into...

Thanks in advance

 

Very good read. Thank you

 

Why isn't this a sticky???

 

I wanna figure out how to manually lock the TC in a 60e. In my samurai id like to have a switch on the dash to lock the TC while riding in sand so it wont be slipping all the time in 2nd.

 

Thats easy. Grab the gound signal wire off the lockup solenoid in the pump. Then put a toggle switch on it and tag it to ground.

 

Done!

 

Good job brotha

I put a lockup switch in my 85 MonteSS with the 200R4, after my trans was "built" for the second time by a trans builder who used to have a good rep, but I guess since he wasn't the guy who built my unit I ended up with a hack.

The trans was acting real funny and I stopped by their shop for a test drive and it blew up on the road and they had to give me a ride home...IIRC, I didn't even have 100 miles on the unit after they built it. They did a shitty job with the install too...bent my hood and exhaust, I was pissed... (the first time around I pulled the trans and sent it to them, but since I broke down at their place, they did the swap and rebuild for me).

Anyway, the thing would go into lockup too soon and lug like ****, so I tapped into the brake light switch (which I know that Vince knows, and others may too that applying the brake releases the TCC), and put a toggle switch that I'd just turn on when I was cruising and TCC operation was beneficial. Around town, the switch pretty much stayed turned off. But yea, it was a piece of cake

 

This is one informative thread.

 

nice info.

 

Wow what a great write up