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"ALisSa1 Silverado"1990 Chevrolet RCSB● 2002 Chevrolet Camaro LS1/4L60EScrimpin Ain't Easy( . Y . )
Doesn't the speedometer also require the VSS?Originally Posted by keniff
why did you keep the VVS, the NP harness will control the engine/tranny
all you need is a 12v, IGN, FP, Ground with that harness other than your sensors
The new harness will have a vss that goes from the trans to the pcm. The pcm has a speedo output that runs to the old speedometer.
I, on the other hand, spliced into the new vss and connected the old vss to make my speedo work. The way I did it is not how I recommend it and I will probably change it in the future. If you use the speedo output from the pcm then it is tunable for gear changes, tire sizes etc.
'91 2WD RCSB
5.3l L59 DBW
4L80E
TR220 cam
RevMax 2800rpm stall converter
Schoenfeld LT Headers
Nelson tuned
My Truck Video - http://www.youtube.com/watch?v=Rw9y1...&feature=email
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