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Discussion Starter #1
I'm currently driving back to la with six hours left.

My tranny SLAMS gears if I'm rolling with no acceleration and then give it throttle to get back up to speed. This damn IH 10 keeps coming to almost a dead stop then takes off and I'm just keeping up.

I am not putting it under hard throttle, very easy actually.

No codes, and It's done it three times today.

I am probably wrong but feels like the convertor because I let off the throttle at 70mph coast down to 10-20mph then accelerate back to speed, that's when it slams gears one shift.
 

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Did you try reloading a diff tune? What is your trans temp? Any codes?
 

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Discussion Starter #3
Yes it first did it on performance then twice on extreme.

No codes.

Temp has never been above 163
 

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Yes it first did it on performance then twice on extreme.

No codes.

Temp has never been above 163
You should try to load the stock tune and see if it does it. If it still does it take to trans shop.
 
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