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I was wanting to see if anyone else has had the same issue with their truck that I'am haveing. I purchased a 2012 with a build date of July 2011, truck was running fine with no issues and at six hundred miles it got the knox sencer recall done. When that was performed they reprogrammed all computers with the latest updates. Ever since the reprogramm the transmission wil shift funny at times. One time I was pulling out into traffic and when it was going from 1 to 2 it fell on its face and then picked up and was fine the rest of the day. Another time it had a hesitation while going into second gear and started to jerk the truck. It also was in six gear one time going down the road and the truck jerked twice and then never happened again since. These thing don't happen on a daily basses. Any ideas would be great. Thanks!
 

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i think there is some problem related to your cluth plates as they are out of service or there is some default in your gear box maybe any nut missing or any part has gone loose so it would be better for you to show your trucks problem to good technician
 

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I was wanting to see if anyone else has had the same issue with their truck that I'am haveing. I purchased a 2012 with a build date of July 2011, truck was running fine with no issues and at six hundred miles it got the knox sencer recall done. When that was performed they reprogrammed all computers with the latest updates. Ever since the reprogramm the transmission wil shift funny at times. One time I was pulling out into traffic and when it was going from 1 to 2 it fell on its face and then picked up and was fine the rest of the day. Another time it had a hesitation while going into second gear and started to jerk the truck. It also was in six gear one time going down the road and the truck jerked twice and then never happened again since. These thing don't happen on a daily basses. Any ideas would be great. Thanks!
I noticed the same thing with my 2012. Seemed to shift fine until they reprogrammed for the nox issue @ 1k miles. Hasn't shifted the same since! I think it's all computer programming!
 

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Junior Member
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I was wanting to see if anyone else has had the same issue with their truck that I'am haveing. I purchased a 2012 with a build date of July 2011, truck was running fine with no issues and at six hundred miles it got the knox sencer recall done. When that was performed they reprogrammed all computers with the latest updates. Ever since the reprogramm the transmission wil shift funny at times. One time I was pulling out into traffic and when it was going from 1 to 2 it fell on its face and then picked up and was fine the rest of the day. Another time it had a hesitation while going into second gear and started to jerk the truck. It also was in six gear one time going down the road and the truck jerked twice and then never happened again since. These thing don't happen on a daily basses. Any ideas would be great. Thanks!
we had that same problem with the new 2011 6.7's. it was indeed a computer tsb flash that fixed the problem on mine. i dont know if there is a tsb on the 2012 for that prob.
 
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