truck would throw a huge misfire when in motion. Started as just a couple times here n there and gradually got worse. Sent my truck in for some front end work and the shop said my TPS was bad so I had it changed. The problem persisted a nasty loss of power that would force me to clutch in and goose the throttle to get it going again only to turn around and repeat especially climbing hills. no codes could be pulled from the PCM except a snap throttle and that wasn't till after the fight to get into the PCM. Now it just wont stay running during warm up. How good are the odds this is PCM related?