GMC Yukon XL Shifting to 4WD While Driving ? What Is Terrain Mode?

This is my 2022 GMC Yukon XL SLE Duramax 10speed SUV. it has 4WD and in this video I go over the process to shift it from 2WD to 4WD and see if this has to be done only when parked, in Neutral or while I am driving.
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[@robertthanepohn7559]

Yep, you can definitely switch modes going down the road, even at highway speed, just not to 4-low. Even in the summer if you’re on an interstate at speed and it starts raining switch over to 4-hi to make sure your truck stays facing the right way! When you get back to dry road go back to 2-hi so you’re not tearing through as much fuel (and to save needless wear on the transfer case)

[@Myksgarage]

Yeah that's a nice feature!

[@fubolibs4218]

Only 4Lo require you to stop and switch to neutral and it’s only for off-road or extreme heavy snow in low speed. Use auto for rainy or snowy conditions. 4WD high should only be used if the road is slippery only in rain or slippery conditions. Terrain mode is different it controls ur engine torque different. So it’s not the same as transfer case.

[@Myksgarage]

Good information, thanks for sharing

[@marekkrepa9982]

Hi. 2017 Sierra. Truck is acting like it's on 4LO (hard to turn) when I set the selector to 4HI mode. Any idea what's wrong?

[@yermoffroad]

​@marekkrepa9982 4x4 is 4x4. 4 lo is just lower gears, it's going to turn like that in 4 wheel

[@PeteNice29]

AUTO is effectively AWD. Safe to use anywhere, but pulls a bit more fuel. You'll notice a bit less wheel skitter on acceleration on iffy/gravely/slick surfaces.

[@Myksgarage]

Well said!

[@devellwilson7099]

Thanks good info..

[@Myksgarage]

👍

[@Myksgarage]

Thanks!

[@michaelbefumo-qg7ji]

Since the late eighties they came out with shift on the fly that's what makes it where you could put it in for high up to 50 miles an hour for low you have to come to a stop put it in neutral

[@Myksgarage]

👍

[@chadmark88]

Great information ( if I ever buy a Yukon Denali ) I'm considering the 6.2 and the diesel - my one concern is when the engine is in regeneration mode . . . have you ever had to wait for it to finish regen before turning the engine off ? I drove a new commercial vehicle ( before retiring ) with a diesel engine, and I was told not to turn it off when it was in regen mode - a real pain to have to wait in a parking lot before I could go into a store !!! I will be doing almost all driving around town, for very short trips ( less than five miles ) How often does your diesel go into regen mode ? The one I drove, eight years ago, did it at least once a day ( I drove it for four hours in the morning and four in the afternoon ). VERY few people on TH-cam have talked about the diesel in the Yukons regen mode.

[@Myksgarage]

I've only seen the regen message once in 12,000 miles. Here's a video I did when I saw the message: th-cam.com/video/vxZMkbfv6r8/w-d-xo.html

[@chadmark88]

@@Myksgarage WOW . . things have obviously change since I drove that new, diesel school bus, sixteen years ago - I know it went through that burning process at least once a day !!! I'm going to have to talk to someone at my dealership to see how the Duramax Diesels are now in the Yukons - THANKS for the quick reply.

[@DavoodKhalil]

Excellent

[@Myksgarage]

👍

[@cirlenepereira7804]

This vidéo help me a lot tks .good job

[@Myksgarage]

Thanks for watching!

[@centredoorplugsthornton4112]

Do not shift into 4wd if the back tires are spinning or slipping in 2wd or rwd. You'll break something.

[@Myksgarage]

You don't have to be stopped in order to shift into 4wd

[@estoiniodolbrun2228]

I got a Chevy suburban s 71 2021, whenever I put my car in 4 wheel drive , when the car slow down and I try to make turns, the tire locked up

[@centredoorplugsthornton4112]

@@estoiniodolbrun2228 that's the purpose of 4 wheel drive. Don't use it on hard pavement.

[@ericGT50]

I’m sorry…. But a 2wd rear drive is both wheels moving not one…it’s not 1wd.

[@Myksgarage]

🤷

[@berhardt17]

You don’t know how open differentials work do you

[@Shouganaigarage]

@@berhardt17right? Pretty wild how people will be so confident about something they don’t really understand 😂

[@joshniehaus3303]

How fast can you go in the auto setting? 55 MPH or below?

[@roberthenry9319]

Wrong, @eric. Always best to do a little research before exposing ignorance on You Tube.