Trans doesn't like to shift when cold.
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New User
Joined: Nov 2010
Posts: 12
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From: North Fort Myers, FL
Trans doesn't like to shift when cold.
My transmission doesn't like to shift when cold. It goes into gear but goes into higher rpms before shifting. This goes on for about 3 miles. It's avoided if I let it warm up in the driveway for about 10-15 min. any ideas? what can i do? Also, I am hearing alot about an OASIS report, dont know what it is though...
Postmaster
Joined: Jul 2005
Posts: 3,956
Likes: 6
From: Abilene, Texas
can't be of much help on the trans issue you have, but an OASIS report you get from the dealer. It tell what all warrenty work has ever been done by the dealer to your truck. Good info to get when looking at buying a used truck.
Postmaster
Joined: Oct 2007
Posts: 4,202
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From: Illinois
The Torqshift's nature tends to shift a little late and hard. However this only occurs when cold. If this is happening more often you'll have to dig deeper on it. Try a flush first with an external filter change
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Hotshot
Joined: Jul 2005
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From: Middle Tn.
And make sure that you use all OEM filters. The 6.0 doesn't like a/m's.
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Joined: Apr 2008
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From: Green Lane, Pa.
My transmission doesn't like to shift when cold. It goes into gear but goes into higher rpms before shifting. This goes on for about 3 miles. It's avoided if I let it warm up in the driveway for about 10-15 min. any ideas? what can i do? Also, I am hearing alot about an OASIS report, dont know what it is though...
Just how cold does it get in North Fort Myers?
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New User
Joined: Nov 2010
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From: North Fort Myers, FL
not that cold at all. I am just talking after its been sitting overnight, 10 or so hours. Right now our lows are in the 60's. Not real cold for most people reading this. its pretty comfortable right now. 
sorry bout that. I am new to threading, still trying to pick up on the lingo
sorry bout that. I am new to threading, still trying to pick up on the lingo
5th Wheeling
Joined: Oct 2010
Posts: 46
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From: Upta Camp, Maine
I think its just the nature of the beast due to the internal T-stat in the tranny. My 06 will shift out a bit later when cold with a firmer upshift ,All is normal after a bit of warm up. Allways has done this.
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New User
Joined: Nov 2010
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From: North Fort Myers, FL
yeh, it runs great after it runs a little. I just hate having to let it "warm up" every day. But I foresee a trip to the dealer here in the future for a fluids change. Awesome response for my first post, thank you all. I am sure I will be back for more help.
Posting Guru
Joined: Apr 2008
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From: Green Lane, Pa.
You might be better off if you cut out the excessive idling in the driveway, the only way to warm the trans is to drive the truck. Excessive idling leads to fuel dilution, EGR issues and more. As someone already posted that you should replace all fluids and filters, motor oil, trans oil, transfer oil, differential oils, power steering fluid, brake fluid and engine coolant, Air filter. Make sure the fuel filters (2) are changed using only OEM filters and the required fluids. This is the only way to ensure peace of mind and a mileage to start future service. All this service I mentioned is a little pricey, but it's much less expensive compared to repair's due to service neglect.
Thread Starter
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New User
Joined: Nov 2010
Posts: 12
Likes: 0
From: North Fort Myers, FL
You might be better off if you cut out the excessive idling in the driveway, the only way to warm the trans is to drive the truck. Excessive idling leads to fuel dilution, EGR issues and more. As someone already posted that you should replace all fluids and filters, motor oil, trans oil, transfer oil, differential oils, power steering fluid, brake fluid and engine coolant, Air filter. Make sure the fuel filters (2) are changed using only OEM filters and the required fluids. This is the only way to ensure peace of mind and a mileage to start future service. All this service I mentioned is a little pricey, but it's much less expensive compared to repair's due to service neglect.