yes, it will work if you cut the blue/black wire loose from the DRAC and hook the speed output wire from the PCM to it and the Red/white wire, also cut loose from the DRAC.
yes, it will work if you cut the blue/black wire loose from the DRAC and hook the speed output wire from the PCM to it and the Red/white wire, also cut loose from the DRAC.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Any guesses how this would work on a 90 suburban? Im putting a DBC 5.3 in mine. So, would i get my speedo and cruise working by simply doing as the OP said? Or do i need to find the wires that originally fed the speedo in the 90 and somehow tap into those?
never got mine working, it will be easier if you switch to the obs gauges with the needle and tach you could just wire it straight up.
or go with aftermarket ones like i am next month
1989 RCSS 5.3/4L60E swap
- 224/230 .581.591 112lsa,
- 3200 Stall
- DJM 4/6 drop
- Nelson Tuned
Building the truck GM never did..
I don't think it should be too tough. Seems that lots of people that do the swap in older trucks use 89-91 burb clusters to get the speedo to work again.Originally Posted by T-Stark
Ok, so where is the red/white wire? I dont see it on this diagram. Is it from the vortec ecm?
Also, Does anyone have pics of what they did? or perhaps there own diagram?
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