How can i get my 93 chevy trucks factory speedo to work cause without it not working of course my mileage doesnt work either. is there a way to make it work through the ls1 computer? or for me to get it to work some how? thanks for any help boner i know you have a truck what did you use

 

What transmission are you using?
on my truck I kept my original pcm so on the speed sensor I just spliced into it so that my dash speedo and the new pcm would both know how fast I was going

 

See i got rid of my old pcm and wiring for it. I am about to reinstall a 4l60e cause i dont really like not having overdrive with the turbo 350. Is there another way to get it to work like tie into the speedo on the truck and the ls1 pcm to make it work i dont care about it being a little off just want it to work

 

If your speedo is cable driven , there is a module available to convert the VSS signal to a cable . It's available at www.hawksthirdgenparts.com

 

I am pretty sure 93 is the same as 94. On mine I just tied into the VSS wires from the PCM to the 4l60e and ran them to the DRAC inside the truck behind the glovebox.

 

Yep, you can do it that way, or if the DRAC is gone you can take the SPEED out wire from the LS1 PCM and tie it directly to the SPEED in wire of the cluster. The signal out of the old DRAC is the same as the signal that comes out of the LS1 PCM.

 

awesome which wire is that that comes out of the ls1 pcm 2001 model color or pin out thanks so much i want the odometer to trun over to 300,000 miles it is at 272,000 right now that was with the original engine and tranny

 

also it is not cable driven thanks though for the info badjuju

 

might have found it is it pin number20 red connector lt green and black wire vss refererance low is that the one?

 

I knew somewhere around those years they went to a VSS instead of a speedo cable, just wasn't sure when.

 

No. It's RED 50.

 

so it is the pin number 50 on the red connector and this is for a 2001 the wiring sheet for the pinouts show it as pin 20 on the red connector. vss low signal reference. but you should know so i am taking your saying instead. thanks for the help speartech. glad you said somthing i couldve freaked something up bad thanks alot