I have bought an ECM that everyplace says is correct for my truck but even after programming it at a dealership, some of my auges do not work and stuff of that nature. I'm figuring that the wrong ECM because there are 2 available for a 2000 s10 2wd 4cyl. If anyone would mind post your ECM (engine computer) hardware number (HDW#, how it should be on the ECM), and service # on the ecm and information of your truck, like year, flex fuel, not flex fuel, automatic trans, manual trans, 4cyl. I would greatly appreciate any info or help. Thank you very much.