can anyone tell me what kind of scan tool I need for a 99 topkick with a cat 3126 engine. it has a obll plug but my scanner didn't work. im hoping to get something like a scangauge so I can monitor mpg and trip milage. thanks
99 topkick c5500 engine scanner
Discussion in 'Trucks [ Eighteen Wheelers ]' started by montanyewoodworks, Mar 29, 2014.