I bought a Scangauge for my Avalanche, for whatever reason it is not cooperating with it. The scangauge works on my wife's Oldsmobile and my father-in-laws Ford.
I have no use for it if it doesn't work with my car.
They go for $159 or so brand new.
Send me a PM with your offer.
I can do Paypal, shipping would coast about $5