TheKOOK
Newbie
I recently purchased a 1988 Cheyenne K2500 4X4 and a couple of days ago the truck stalled while idling at a red light and the power seems low when accelerating. I got home and noticed the SES light came on so I checked for any codes and I got code 51 which says there an error with PROM. I removed the ECM and PROM to check for anything unusual but everything appears normal. If I were to replace the PROM which one would be the right one for my truck?