: Recall # N242454440 MOMENTARY REAR WHEEL LOCK-UP

[BradN]

Anyone else experiencing this?
I bought my 2020 2500HD a few weeks ago. First trip pulling a light (3500lb) camper. Cruise set to 65 going up an incline.
BANG!!! rear axle locks up momentarily, nearly putting my wife and I into the windshield.
WTF!!!
Couple miles later, same thing, this time I get kicked 2' across the center line. Wife is freaking out. We pull over, turn around and baby it back home.
Take it to a shop and they have no clue. No warning lights. Nothing appears wrong.
Two days later I get a carfax email about this:
Recall# N242454440
So now I get to wait for GM to figure out a fix for my, not even registered yet, $40K death trap.

 

[kidturbo]

What Should Customers Do?​

• For Current Owners: While there is no immediate fix for the issue, current owners should remain aware of their vehicle’s behavior, especially if they experience harsh shifting.

Well shifting you 2 lanes while towing a camper certainly qualifies as Harsh in my book..
Thanks for the alert.

 

[NC-smokinlmm]

That’s some straight bullshit right there.

 

[BradN]

​

What Should Customers Do?​

• For Current Owners: While there is no immediate fix for the issue, current owners should remain aware of their vehicle’s behavior, especially if they experience harsh shifting.

Well shifting you 2 lanes while towing a camper certainly qualifies as Harsh in my book..
Thanks for the alert.

Yeah, I'd say we're pretty damn aware of our vehicle's behavior. How about GM getting aware of fixing it.

 

[gassux]

i saw it on fab rats youtube I'm shocked that GM is doing a recall

Source: https://www.youtube.com/watch?v=NvQ3fRX7swQ

 

[Cougar281]

So what's different about the transmission in the half tons vs the 10 speed found in other vehicles like my CT6 and the CT5 & CT4? I believe all of the 10L's are essentially the same. What did they change to create this problem, or is it likely to affect ALL vehicles with a 10 speed?

 

[BradN]

Recall Info Link
Lists models affected

 

[Chevy1925]

i saw it on fab rats youtube I'm shocked that GM is doing a recall

Source: https://www.youtube.com/watch?v=NvQ3fRX7swQ

Yeah I don’t like that fix. O-rings on a valve like that, that moves back and forth I feel is just asking for o-ring material to go into the vb or be a temp fix at best.

 

[BradN]

I fully concur with your assessment. There's a reason valve spools never have o-rings. Plus the fact that I'm sure it's the housing that's worn, not the spools. That means the spool to body clearance is bad which puts o-rings at further risk.
I assume (OK, I hope) the GM fix involves replacing that upper valve body section. I can't imagine anything else will work.

 

[kidturbo]

Just so happen to have a used 10L80/90 something valve body under my desk. Never been out the box, no idea what year/model.
Maybe we should crack it open ??