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Open Roads Forum  >  Tow Vehicles

 > GM HD Trucks Many with AWD instead of 4WD

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Terryallan

Foothills NC

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Posted: 07/08/20 10:09am Link  |  Quote  |  Print  |  Notify Moderator

mkirsch wrote:

AWD and traction control probably would have worked well in that situation.

Traditional 4x4, even with a limited slip or locking rear diff, is at best a THREE wheel drive system, and that one front wheel that's spinning doesn't bring anything to the party except some slung mud. If you've got open diffs front and rear then you're down to a TWO wheel drive system, and the wheels that get power are always the ones with the LEAST traction.

AWD doesn't let you get to that point. If you're stuck, you're truly stuck because all four wheels have no traction. You're not stuck because the two wheels that might be able to get a little bite are just sitting there while the other two spin.

AWD will cover 99.99999% of cases, except maybe rock crawling or mud bogging. If you're doing those with a brand new production vehicle, I'd call your sanity into question.


I have seen a AWD stuck spinning each wheel, then taking power from the spinning wheel, until finally. It took power from all the wheels. and it just sat there doing nothing.


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monkey44

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Posted: 07/08/20 10:18am Link  |  Quote  |  Print  |  Notify Moderator

I've driven both ...

AWD is great for family vehicle, and running around town, occasionally rain, mud, or dirt roads.

True 4x4 will save your personal rear-end when you need it.

I traded my mini-4x4 Chevy for a AWD Van in 1999 - a Safari - thought, great don't have to sweat it, just drive and never get stuck. Most times it was great, snow, mud, whatever ...

I drove the White Rim Trail in that AWD - got stuck once, took a couple hours to free myself... shovel, boards, etc. Got stuck again, same hassle. I envisioned myself with a $5000 towing bill at one point, but got out. Turned around, drove out of WRT, finished my trip, and the next week drove home, bought a 4x4 again and have never been without one since.

If you need a run-around vehicle, in town or on reasonable roads, AWD is better than one wheel or FWD. If you ever go where you need 4x4 and don't have it, you're cooked.


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gattorgetter

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Posted: 07/08/20 12:18pm Link  |  Quote  |  Print  |  Notify Moderator

i think you are mistaken on what you see... some trim levels have 4-h/l 2-h and auto... not just a north thing... just watched one go down the line headed to TX that way

time2roll

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Posted: 07/08/20 12:38pm Link  |  Quote  |  Print  |  Notify Moderator

If it applies the brakes to any wheel to transfer the torque then it is weak and is for moderate conditions at best. JMHO

I have TrueTrac limited slip front and rear along with the locked low range as needed. Works great for what I need.


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parker.rowe

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Posted: 07/08/20 01:29pm Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

If it applies the brakes to any wheel to transfer the torque then it is weak and is for moderate conditions at best. JMHO

I have TrueTrac limited slip front and rear along with the locked low range as needed. Works great for what I need.


The brake thing works fine. Not a locker but it works.

People have been doing it for years manually.

I have had a tire hanging in the air and the brake based torque biasing system worked perfect.

Can someone point me to these supposed AWD transfer cases in HD GM trucks?

All the ones I see are true 2 speed cases. They may have an Auto Mode with computer controlled clutches, but they also have dedicated 2WD, 4WD, and 4WD low ranges.

I know some of the Denali SUV's may have AWD single speed cases, but these are still true, robust transfer cases, that will do the job just fine for 90% of people. They are nothing like what people envision when thinking of the "AWD" mini SUV's.


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RobWNY

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Posted: 07/08/20 01:34pm Link  |  Quote  |  Print  |  Notify Moderator

The truck I'm considering is a Chevy 2500 HD with the 11,350 GVWR and upgraded RAWR and other towing capabilities. It's "in transit" from Michigan to Buffalo. What that means exactly, I don't know and neither does the new truck sales manager. He has requested updates every 5 days from GM. It's been "in transit" over a week now. In all fairness, it's probably on a truck carrier going who knows where and could even be in Canada somewhere. (shortest route from Flint, MI to Buffalo, NY is through Canada). On the Chevy website it says it's 4WD, on the dealers website it says AWD and on the window sticker from the dealers website it says 4WD. The sales manager says its a 4WD model as well. Who knows at this point. It might get here and I'll find out it's a 4 cylinder Chevy Sonic.


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gattorgetter

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Posted: 07/08/20 01:40pm Link  |  Quote  |  Print  |  Notify Moderator

I build these trucks.... it is either 2 h 4l/4h. Or those 3 plus the auto.... depending on trim pkg

Huntindog

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Posted: 07/08/20 01:47pm Link  |  Quote  |  Print  |  Notify Moderator

My new truck has 4 choices: Auto/AWD, 2WD,4Hi,4 Low


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RobWNY

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Posted: 07/08/20 02:08pm Link  |  Quote  |  Print  |  Notify Moderator

gattorgetter wrote:

I build these trucks.... it is either 2 h 4l/4h. Or those 3 plus the auto.... depending on trim pkg

Maybe you built the one I'm considering. It's got the LT trim package

gattorgetter

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Posted: 07/08/20 02:11pm Link  |  Quote  |  Print  |  Notify Moderator

What trim package? I can find one at the plant tomorrow and look

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