Mountianjustice
Newbie
So i have a 92 W/T 1500 with a 4.3L v6 and a nv3500 trans 3.42 rear axle. My 4288 ecu crapped out and the only one i could get was 7747 from an automatic mines 5 spd originally. So recap 7747 ecm from an auto in a manual 2wd. Needless to say the speedo doesnt work. Can i just use my old 4288 prom chip in the new 7747 ecm and problem solved or do i need to do something else no speedo no odometer code 24 vss vehicle speed sensor when running
