96 LS swap help..

ok im almost ready to do the swap.. got all the part but a few.. but what i need to know is my truck has ABS that the PCM controls.. i have a stand alone harness and new PCM.. what do i need to do with the ABS? can i pull the old PCM out and all the wiring and just leave the stuff to run my gauges..?

also i plan to leave the stock 5speed in the truck NV3500 i think.. but what to run a aftermarket flywheel.. billet aluminum flywheel.. what year will work? i know the stock 99 4.8 will work but is there a aftermarket one thats the same as the 4.8? i called summit and the guy was lost... i called ram same thing...

if i go with the stock flywheel will my stock hyd throw out bearing work.. also with the stock 96 truck clutch work on the 4.8 flywheel?

sorry so long winded this are the few things thats holding me up...

anyone??

It's not that we aren't trying to help. Most of us stay away from the stock 5 speed. There's only a handful that have done it. The 5 speed just isn't a performance tranny. You can actually leave most of the stock harness intact. Just use what you need. There is a whole thread dedicated to this swap that has all the wiring information in there. It's a sticky and very easy to find.

See the stickies pl4yboy mentioned, they will answer alot of your PCM questions. Also you could run both PCM's like several of the guys on here. I believe there is a thread on how to do that as well.

i got all the basic stuff down that in the stickies... i also have all the parts i need to do the swap... i have a stand alone wiring harness... i need to know what to do with the old wiring.. i no i need to keep the basic wiring stuff like oil, water, A/C, alt wiring and put it to the side... i really just need to know whatto do with rest of the wiring and if there is any other wires to keep..? ive read all i can find even see some videos on you tube... but no one goes into detail on the 96 to 98 trucks... like they do on the 88 to 95 trucks...

i would like to do away with the old PCM so theres not alot of crap under the hood... so can someone go in to details for me PLEASE!!!! thanks....

also i have been over 91blkstpsd build tread 100 times on the flywheel deal... i got one today new and that thing is BIG!!!! 40+ pounds.... ive PM him with no reply for help... so if someone can give me a part number to make sure i have the right one or i can cross over to make sure i have the right one this will help alot....

Like I said, the stickies pretty much cover everything as far as wiring.

stroker,
I used a 1988 factory wiring diagram manual I purchased on ebay. Another good source of all the electrical circuits is AlldataDiy. Its hard to condense all the electrical info you are looking for into one thread, but just find the diagrams and work them one at a time until finished. There isn't a short cut, it's time consuming work that needs to be done right.
Good luck

not really... ive read it over an over and i see nothing about 96+ ABS wiring... if its there i must be over looking it..

Quote:

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Originally Posted by 88stepside

stroker,
I used a 1988 factory wiring diagram manual I purchased on ebay. Another good source of all the electrical circuits is AlldataDiy. Its hard to condense all the electrical info you are looking for into one thread, but just find the diagrams and work them one at a time until finished. There isn't a short cut, it's time consuming work that needs to be done right.
Good luck

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yead its becoming a PITA... lol the 88 to 95 wiring is diffrenet then the 96 to 98.. the PCM on 96 works the ABS on my truck the 95 down dont so there alot easier to work over the wiring..

http://www.ls1truck.com/forums/lsx-t...ed-swap-4.html
I have the stock 5 speed with a lq4 in my 92 and i used this tob and pilot bearing on this page

Quote:

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Originally Posted by stroker52

yead its becoming a PITA... lol the 88 to 95 wiring is diffrenet then the 96 to 98.. the PCM on 96 works the ABS on my truck the 95 down dont so there alot easier to work over the wiring..

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Spend the $20 or whatever it is to get the AlldataDiy for your truck. It covers everything.

FYI this(.) is a period. This(...) is an ellipsis, it is being used incorrectly.

If you wire it right the newer pcm will run the abs. abs module just needs like one or two pieces of info can't remember right of hand but I can look at my notes tommorrow. And you can use the oil sender from the LS engine.

yeah all the brake control module needs is a VSS signal.

What computer will you be using? The 0411 computer, or? The '95 thru '98 OBDll truck wiring, were transition years. In other words, some of the wire colors/codes that came out of the drivers side firewall had different functions(but not all), for all four years. Nothing can be counted on from one years wiring to the other. I recommend you go on E-Bay & purchase the same year GM brand Service Manuels that apply to your truck. Don't buy aftermarket. They are invaluable to you now...and in the future. They have all the wiring schematics & are actually very easy to understand. Basically, every wire(except a couple) that comes out of a GM OBDll computer is a ground. When the computer gets a signal from a particular sender or sensor to turn something on, it gives that accessory a ground, usually via a relay. In your trucks owners manuel, there is also a fuse diagram, that can help you identify each fuse function/wire in your power center(fuse block), on your drivers inner fenderwell. I removed my trucks original 1996 computer, and cut all my wires off exiting the firewall, leaving plenty to connect my standalone F-Body(0411) harness wires to. 1996 trucks still used regular anolog gauge function, so everything is pretty straightforward. Identify the speedo, tach, oil-pressure, water temperature, fuel level, etc., wire color coming out off the dash, and butt connect onto them. I used uninsulated silver butts & epoxy heatshrink. As mentioned, all your ABS module needs is a VSS signal that your new computer can provide. There are(if memory serves), three different VSS signal pulse strength wires exiting the computer, so you just have to look up what the ABS module VSS signal strength of those three, that it needs, and connect up. All the wiring to the ABS does'nt need to be cut or disconnected in any way, just one of those VSS color signal wires. By the way...NEVER use a test light on a LS1 computer or wiring harness, to test a circuit fuction, as it can damage the computer. Use a digital meter only. Get the book & your home free. Hope this helps.

Yeah I'm using the 411 PCM out of a dbc truck. I think its a 2002 PCM. I know to go though my wiring and keep the normal stuff like, oil, water a/c wires. My wiring harness has a wire that turns my fuel pump on so I know I need to find it and hook that up. I just plan to cut the wire coming out of my PCM now and hooking it up to my new PCM. I guess I need to get a service Manuel for my truck.

You need your PCM in order for your ABS system to work.

so we need to figure out which vss wire to connect to the ads module for it to work, any idea with wire out the new pcm it is and which wire going to the abs we need to connect it to is?