3rd Gen Engine and Drivetrain -> 2007 and up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

problems with the G56

Old 01-21-2007, 01:11 PM
  #1  
Registered User
Thread Starter
 
rich's Avatar
 
Join Date: Aug 2002
Location: Kerrville eastern new mexico, west texas
Posts: 3,308
Likes: 0
Recieved 0 Likes on 0 Posts
problems with the G56

got my 07 in sept and it is starting to hang up in reverse where i have to fight to get it out and then it has shifting problems in the first 3 to 4 gears they changed the fluid at 14k its now at 27k and they still dont have the answer i think its the synchro's anybody else haveing the same problems
rich is offline  
Old 01-21-2007, 06:23 PM
  #2  
Registered User
 
mikelr's Avatar
 
Join Date: Jan 2005
Location: Hudson Valley N.Y.
Posts: 394
Likes: 0
Recieved 0 Likes on 0 Posts
I just stated in the other 6 speed thread how my G56 seems very notchy feeling. I am experiencing most of the same symptoms that you stated,
shifting problems from 3rd to 4th to 5th gears, 6th seems to be smooth. I've experienced at least once having a hard time getting the gear shift out of reverse with the clutch fully depressed.
Double clutching seems to help which pionts to syncros.
What type of fluid was put in your box at 14k?
I'm thinking of putting in Redline MT-90 to see if it helps the syncro operation a bit.
My truck only has just over 1000 miles at this piont so I was hoping that the box would wear in and smooth out but by your description I've got more notchy shifting to come.
mikelr is offline  
Old 01-21-2007, 08:06 PM
  #3  
Registered User
 
CD in NM's Avatar
 
Join Date: Aug 2006
Location: New Mexico
Posts: 3,113
Likes: 0
Recieved 0 Likes on 0 Posts
You need to check the TSB's or recall information with your dealer. They had some problems with some of the G56's last spring, it was ALL about the synchros, they dropped the trannys and changed them. Another problem they had was that the G56's were coming off the line with low fluid capacities in them. That can also increase the notchiness in them. I have just at 12K on mine and it is just now starting to shift better. Either that or I am starting to shift better. It is still very notchy when cold. To have to double-clutch it kind of sounds like a bad hydraulic reservoir. That is another place there have been complaints and warranty replacement. Some who have had troubles there still had problems down line with the hydraulics. I think a couple have gone with aftermarket hyd reservoirs from one of the clutch manufacturers. If I start having either clutch or hydraulic stuff I am just going to go with both as aftermarket parts, better than dealing with it over and over because the stock parts will continue to fail. Nuisance factor.

CD
CD in NM is offline  
Old 01-21-2007, 08:50 PM
  #4  
Registered User
 
mikelr's Avatar
 
Join Date: Jan 2005
Location: Hudson Valley N.Y.
Posts: 394
Likes: 0
Recieved 0 Likes on 0 Posts
That's good info about the low fluid level issue and possible syncro problems. As far as my hydraulics go they are fine, clutch engagement is about half way up the pedal travel so the clutch is fully disengaging with the pedal to the floor. I do hear an annoying clunk with each engagement though, it even does it when you cycle the clutch with the trans in neutral. I think it has something to do with the dual mass flywheel.
mikelr is offline  
Old 01-22-2007, 08:50 PM
  #5  
Registered User
Thread Starter
 
rich's Avatar
 
Join Date: Aug 2002
Location: Kerrville eastern new mexico, west texas
Posts: 3,308
Likes: 0
Recieved 0 Likes on 0 Posts
dealer changed the fluid and has checked for tsb's and have found nothing i dint spend 40 grand on a truck to have a tranny i have to wrestle with every time i change gears. it will not smooth out over time cuz its got 27k on it now and is just as bad or worse. had one of the techs drive today and he said that it doesnt feel right so now its a wait and see what dodge says. i want the complete tranny replaced he said they will probably want just take it apart and fix somethings inside it. its new why would i want it rebuilt in less then 6mo am i wrong in wanting a new tranny.
rich is offline  
Old 01-22-2007, 09:02 PM
  #6  
Registered User
 
D-Roc's Avatar
 
Join Date: Oct 2006
Location: Cold Lake, Alberta
Posts: 676
Likes: 0
Recieved 0 Likes on 0 Posts
Amsoil Atf smoothed mine out some. But it was good from the start. I was the bad one. Took me awhile to get smooth with it. I am going to try Redline C+ATF next change-it's easy enough to change, not like an auto.
D-Roc is offline  
Old 01-22-2007, 09:19 PM
  #7  
Registered User
 
boostjunkie1's Avatar
 
Join Date: Feb 2006
Location: Between SC,TN,VA!!!
Posts: 886
Likes: 0
Recieved 0 Likes on 0 Posts
No problems here! Starting out in the cold is a little bit notchier, but all trannys are at 30deg temps!! Once the fluid warms up it shifts smooth. I will be changing the fluids at 10,000, so 500 more miles. Looking at going towards Amsoil in Tranny, and Royal Purple in all the Diffs and transfer case!
boostjunkie1 is offline  
Old 01-22-2007, 09:41 PM
  #8  
Registered User
 
Danderson's Avatar
 
Join Date: Jan 2006
Location: San Diego
Posts: 3,369
Recieved 21 Likes on 18 Posts
G-56

Originally Posted by boostjunkie1 View Post
No problems here! Starting out in the cold is a little bit notchier, but all trannys are at 30deg temps!! Once the fluid warms up it shifts smooth. I will be changing the fluids at 10,000, so 500 more miles. Looking at going towards Amsoil in Tranny, and Royal Purple in all the Diffs and transfer case!
I've got 800 miles on mine and aside from hesitating a second when it's cold for the 2-3 shift,its working well.I've even downshifted from 6th to 3rd and had it I go in smoothly. Luckily,I sensed the goofup and depressed the clutch pedal immediately thus avoiding an overrev situation. I need to get under there and check fluid levels though. The'ye are multi-colored dots at all fill points all over this truck indicating in theory that the assemblers' jobs were checked. I need to drive this thing and get better at rowing.
Danderson is offline  
Old 01-22-2007, 09:45 PM
  #9  
Registered User
 
boostjunkie1's Avatar
 
Join Date: Feb 2006
Location: Between SC,TN,VA!!!
Posts: 886
Likes: 0
Recieved 0 Likes on 0 Posts
When I first started to drive this truck I was so use to the NV5600 that I absolutley Love it. I never power shift it, always depress the clutch while shifting!! More miles the better it has got for me!
JB
boostjunkie1 is offline  
Old 01-23-2007, 12:58 AM
  #10  
Registered User
 
pooperscooper's Avatar
 
Join Date: Jul 2006
Posts: 226
Likes: 0
Recieved 0 Likes on 0 Posts
Probably why they dont put this tranny in a sports car.

Mine seems notchy when she is cold, dont notice it when its warm. Sometimes reverse and 1st can be tricky, but just let up a tad on the clutch pedal and she will drop right in.

Your problem seems like it might be a little bit more than just a big truck tranny. Like mentioned before....maybe hydraulics??
pooperscooper is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Pack Mule
3rd Gen Engine and Drivetrain -> 2003-2007
23
06-28-2008 08:21 PM
Kman9090
3rd Gen Engine and Drivetrain -> 2003-2007
10
02-21-2008 08:18 PM
rich
3rd Gen Engine and Drivetrain -> 2003-2007
3
04-03-2007 07:56 PM
rich
3rd Gen Engine and Drivetrain -> 2007 and up
5
04-03-2007 05:33 PM


Thread Tools
Search this Thread
Quick Reply: problems with the G56


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.