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Message: [QUOTE="8WR_ZJ, post: 1455806, member: 11387"] Past four days my tuck has started the jolt when the torque converter locks in 4th gear. However the torque converter will not lockup in 4th when the trans temperature is below ~80 degrees. Above ~80-85 degrees under light to medium throttle it will do it every time (I have not tried WOT when the truck is at this point because the truck has only reached ~100 degrees engine oil temperature). I am running the GH SOTF tunes. It does it in every position on the switch. I did multiple 0-50 on the highway this morning. When the trans temperature has reached above ~120 degrees it no longer does this? Is there any correlation between the tuning and transmission temperature? Any thoughts? [/QUOTE]

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