4wd auto shifting

[Nystagmus]

Hey guys....I have noticed when I run my 2014 Longhorn in 4wd auto, I get a slight shudder when shifting from 2nd to 3rd gear. This only happens when in 4 auto....2wd it does not happen.

Any ideas what’s going on here ?

 

[Rado]

Does it happen on dry roads or wet ? I have a dirt driveway and if I run 4x4 on either I get a shudder ! I was told it is normal on dry ground ! Curious to hear what the gear heads say ! Good post

 

[Nystagmus]

Does it happen on dry roads or wet ? I have a dirt driveway and if I run 4x4 on either I get a shudder ! I was told it is normal on dry ground ! Curious to hear what the gear heads say ! Good post

I only run 4auto in the rain or snow...that’s when it happens. Under normal acceleration.

 

[jasonw]

I don't notice it on mine, but I don't run 4WD in the rain, just mud and snow. In my opinion, good tires and not driving like a bat-out-of-hell, and you don't need 4x4 in the rain at all. (I definitely do not drive like an old man.)

Honestly, I wouldn't worry about it unless it starts substantially getting worse.

 

[RammerHarder]

Hey guys....I have noticed when I run my 2014 Longhorn in 4wd auto, I get a slight shudder when shifting from 2nd to 3rd gear. This only happens when in 4 auto....2wd it does not happen.

Any ideas what’s going on here ?

How worn are the tires...??? How bad is the shudder... might be there alll the time, just more prevalent when using 4wd it becomes amplified.
I use to get the 2/3 shudder no matter what mode i was in, it was a transmission problem, i got rid of the 2014 truck for the 2018 i have now. No shuddering at all.

 

[indept]

I run 4wd auto most of the time since I have an open diff and don't have any shudder.

 

[Nystagmus]

How worn are the tires...??? How bad is the shudder... might be there alll the time, just more prevalent when using 4wd it becomes amplified.
I use to get the 2/3 shudder no matter what mode i was in, it was a transmission problem, i got rid of the 2014 truck for the 2018 i have now. No shuddering at all.

Tires are good. Maybe 10k miles. I don’t know how to quantify a shudder.

 

[ColdCase]

Does the transmission have a different shift program based on 2WD vs 4WD auto mode. It doesn't shudder in 4WD lock?

 

[Cardhu]

does it do it in "lock"

 

[[email protected]]

2016 Longhorn Ecodiesel here. I run it on auto 4 wheel drive sometimes, not often. Every once in awhile in the rain. Have never noticed any kind of shudder or any difference at all.

 

[Aussie-John]

So, can I ask if it's a problem running 4WD auto in the rain? I ask because I had another truck and really like the feel, but I do know that some 4WDa suffer "wind Up" in the gear box running 4WD on the road.

Thanks
J

 

[crash68]

So, can I ask if it's a problem running 4WD auto in the rain? I ask because I had another truck and really like the feel, but I do know that some 4WDa suffer "wind Up" in the gear box running 4WD on the road.

The Auto 4X4 trucks use a BW 44-44 transfer case. The power is not sent to the front wheels unless wheel slippage is detected, even if you have put the transfer case in 4X4 Lock. You can find a lot of posts about this transfer case and it's operation.