Transmission jerk when towing

ewbldavis · April 24, 2018

Well truck goes in tomorrow for evaluation and hopefully correction.

I bought it used with 30k. Drives smooth as silk. Towed a friend's travel trailer (guestimate is 9K loaded) Saturday and overall was a great experience, but a few times it "jerked" like trans or converter was slipping. No RPM jumps or anything, and didn't really loose any power - but something isn't right. Hopefully we can get it figured out and corrected in next 2500 miles!

redwngr · April 24, 2018

6.0 or 6.6?

sdeeter19555 · April 24, 2018

Are you sure it wasn't the trailer jerking, mine does that when the trailer hits a rolling pothole...

2012 2500hd 6.0l CCSB 4wd

ewbldavis · April 25, 2018

6.0L, and definitely NOT the trailer. Plus side - light bulb went off this morning that I have 5 year drivetrain warranty, so maybe a bit more time to figure it out. I'll post outcome!

grizzlyltz · April 25, 2018

Was a member last year here with the same type of issue
Not sure what the fix was

Grizzly

sdeeter19555 · April 25, 2018

Was a member last year here with the same type of issue
Not sure what the fix was

Grizzly

Torque converter wasn't it?

2012 2500hd 6.0l CCSB 4wd

ewbldavis · April 25, 2018

I searched and couldn't find much. I'll keep looking. Thanks for info!

Talked to dealer - naturally couldn't duplicate problem and nothing on scanner. We'll see if it acts up again. Drives like a dream otherwise, so maybe it was a fluke. I had rear tires balanced to eliminate that as a cause for any vibration (they needed it).

ewbldavis · June 27, 2018

Update: I towed MY camper, and it performed flawlessly.

I've towed enough that I was certain it wasn't the trailer because of how it behaved. Fortunately, it does indeed seem to be something with his trailer (maybe brake wire short or something else). Love the pulling power of this rig - was an easy tow.

We'll put it to the real test in August when we head down WV turnpike!

redwngr · June 27, 2018

On 4/25/2018 at 6:35 AM, ewbldavis said:

6.0L, and definitely NOT the trailer. Plus side - light bulb went off this morning that I have 5 year drivetrain warranty, so maybe a bit more time to figure it out. I'll post outcome!

Are you sure about the warranty?

I thought they had changed and just the 6.6 still had the 5 yr/100,000.

Edited June 27, 2018 by redwngr