4th Gen Engine and Drivetrain-2010 and Up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

NV5600 Problems (Hard to put in any gear)

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Old 06-14-2010, 09:56 AM
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NV5600 Problems (Hard to put in any gear)

I know there are a couple other threads up right now similar to this but my symptoms are a little different.

Tranny is extremely hard to get into gear at stop lights. I can hold the clutch in for over a minute and it still won't go into gear sometimes. It doesn't happen at every complete stop but when it does I can hold the clutch forever and it won't go into any of the 6 gears or reverse. I usually end up slamming it into 3rd eventually and slowly taking off.

The transmission might have 20K miles on it. i bought it rebuilt almost exactly a year ago. (one week out of warranty FML) When I installed the rebuilt tranny I also installed the Southbend 3600 dual disc and the upgraded hydraulics. I've had problems from day 1 with this tranny but they've gotten significantly worse in the past week since the drag strip.

Ever since I put this tranny in 3rd gear almost always grinds and reverse always grinds when putting it into gear and now it just doesn't want to go into gear at all.

I've heard its the pilot bearing. I'm open to any and all advice and input. thanks guys.
Old 06-14-2010, 01:04 PM
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I didn't know a 4th gen could come with a NV5600?
Old 06-14-2010, 01:25 PM
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2005 mid year they switched over from the 5600 to the G56. (I bet you knew that)

I bet the one of the Admin's will put this thread in a 3rd gen area.
Old 06-14-2010, 04:25 PM
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I apologize I was speed posting earlier and didn't read the titles correctly. Sorry about that. I'll move this over to the 3rd gen area
Old 06-14-2010, 05:56 PM
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Originally Posted by carbuff415
2005 mid year they switched over from the 5600 to the G56. (I bet you knew that)
You bet I do. I was livid. The G56 was the worst part of that truck -- not because of the tranny itself but because of the ratios. .79 was OD and it had a 3.73. I never towed heavy so the switch up from the NV5600 to the G56 after I ordered really made me unhappy.
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