Hello all.I have a 03 Terminator that sits alot.I love the car.This is my story.I noticed my car starting to crank slow.It had the original battery imagine that 10 year old battery.So i installed a new motorcraft battery.Car fired right up.About 2 weeks later i went to start the car and the theft light was flashing quick and the mileage was ------.After a few attempts the car started but the theft light was flashing slow.so i shut it off and restarted the car.All was normal for the rest of the day.Now one month later go to take the car out and the theft light is flashing and mileage ------.Cranks no start like last time.Eventually it started and i went driving.All of a sudden the car dies while driving theft light flashing mileage ------.It never died while driving ever.pushed car to gas station.Tried several times to start car.eventually car started and ran for about 30 seconds and dies.theft flashes mileage -----.I had the car flatbeded home.Got home tried the spare key it started right up and ran for five minutes until i put it back in garage.Today go to start it.Theft light flashes mileage -----.Pulled hec codes.U1262 and another traction control code.It seems to be getting worse.Has anybody had this happen?U1262 code no start crank only?I am getting frustrated.Also i tried to get into the ecm and had no communication while the theft light is flashing.It starts and runs when it wants to.The car does not have a chip in it.It was tuned with the old sct excalibrator if that makes a difference.Help Please.