I was pulling a 3600 lb trailer when the check engine light came on. The at light blinked 3 times and the truck would not go past 40mph. I uhooked the trailer, restarted the truck and drove it to see if it would continue acting strangely. The truck shifted fine. What exactly happened?
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I pulled it in drive. I have been towing this trailer for about one year five days a week and have never had a problem until now.baseballfanz said:Go get the code pull, that way you know exactly what the SES light is for. What gear did you pull the trailer in?
Actually when I had about 35000 miles on the truck, a checkflow valve(runs from transmission to radiator) busted and transmission fluid started coming out of radiator which then caused antifreeze to mix with tranny fluid. The dealership fixed the problem by replacing valve and flushing tranny and radiator.
I don't see how this could have caused the problem.
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