to anyone, i bought a ecm to have a spare tested it worked fine, keeper it for a spare, tried it the other day, to make sure wasn't mixed with bad ones, would not work, how is that possible ? i now have 3 that don't work, can these be rebooted? does anyone know where i can git these rebuilt,,i sent one to florida, ($800) when it came back it wouldn't even roll car over, they would only do a instore credit, why i would want credit when they can't get the first one working..anyway thanks jack