1995-1999 V6 wiring update... - Third Generation Forum

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1995-1999 V6 wiring update...
Wednesday, July 04, 2018 12:15 AM
So I've finally gotten around to another 3500 swap on my latest 97 Cavalier, I have found a harness that will work 100 percent of the instrument cluster. No BS.. Tach, temperature, A/C compressor signal, oil pressure, battery, vehicle speed, check engine, and even the factory theft system.. Yes, I said it, the factory theft system.. Since I live in California, I'm making this car smog legal so everything needs to function. Here's what vehicles will work for the correct PCM and engine harness to use..

-1998 Oldsmobile Achieva 3100-
-1998 Buick Skylark 3100-
-1998 Pontiac Grand Am 3100-

Only the 1998 PCM and harness will work, no 1997 vehicles or 1999 vehicles will work for this. Also the 1998 PCM is supported by HP Tuners.

I also compared pids from my Snap-On scanner to what readings are showing on the cluster and all are accurate.







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