6.0 5r110 HARS COLD SHIFT

[backwoods]

I have had a few differnt customers with auto 6.0 2003-2004 with complaint of first few cold shifts of the day being harsh or late? one is bone stock with EGR system, one has caned SCT tunes and EGR delete, and both act the same,, no engine codes or trans codes,, both are in the 100,000 mile range,, any ideas or things i could look at

 

[weazel]

Mine does it too, i will stay fir the answer


Translated from hillbilly, with tapatalk
Engineers clear the way!

 

[Mark Kovalsky]

Yes, they did that. It was fixed in 2005. It is in the software, I don't remember if there is a factory update for that or not. There were SO many updates for the 2003-2004 trucks.

 

[backwoods]

so if its a software up date, it should be a simple fix??? what is the standard charge for a re flash?? 1 hour shop time ?

 

[Mark Kovalsky]

That's is IF there is a software update available.

 

[jdc753]

MY 05 is pretty rough for the first mile or two, but that just firing the truck up after sitting all night and then dropping it into gear no more than 20 seconds after and pulling out. Motor oil and trans oil are all pretty cold so I just always assumed that was the issue, clears up after the first 1 or 2 runs through the gears.

 

[Big Angry Hillbilly]

Compare it to a known good truck. See what the power level is like. Most of the trucks that shift really late or hard when cold have low power issues. Stuck turbo, stiction in injectors, etc.