2016 vs 2017 AWD differencs? - GMC Acadia Forum: AcadiaForum.net
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post #1 of 22 (permalink) Old 04-27-2017, 05:29 PM Thread Starter
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2016 vs 2017 AWD differencs?

I have a 2017 acadia, not the all terrain, so I know I don't have the buick regal style AWD, but are there any differences besides the ability to disconnect the rear wheels? I just tried it today on a steep and wet poorly made dirt road, and it works really well.
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post #2 of 22 (permalink) Old 05-09-2017, 07:58 AM Thread Starter
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Re: 2016 vs 2017 AWD differencs?

Why does GM keep how their systems work a mystery? Most other AWD systems are well described by their manufacturer...
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post #3 of 22 (permalink) Old 05-09-2017, 12:03 PM
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Re: 2016 vs 2017 AWD differencs?

95% FWD under normal conditions, capable of shifting up to 50% of the power to the rear wheels by use of a multi-clutch plate center differential. Front and rear differentials are open (All Terrain has rear locking differential). Very crappy AWD system in GMC crossovers.

2008 SLE AWD 8psg Medium Brown Metallic RIP<br />2010 SLE2 AWD 8psg Summit White / Sunroof / tow pkg Traded-IN<br />2012 SLE2 AWD 8psg QuickSilver / Sunroof / Bose Traded-IN<br />2017 SLT1 AWD 7psg Summit White / Navigation / Sunroof / Bose / Tow pkg
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post #4 of 22 (permalink) Old 05-09-2017, 04:29 PM Thread Starter
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Re: 2016 vs 2017 AWD differencs?

2017 has a slightly different system, and I was wondering if they changed anything besides having an electronic clutch to disconnect the rear wheels. and this system seems to be better than some others out there going from videos I've seen, but I haven't used mine in the winter, so I don't know first hand.
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post #5 of 22 (permalink) Old 05-10-2017, 09:25 AM
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Re: 2016 vs 2017 AWD differencs?

Quote:
Originally Posted by Isoldmysaturn
2017 has a slightly different system, and I was wondering if they changed anything besides having an electronic clutch to disconnect the rear wheels. and this system seems to be better than some others out there going from videos I've seen, but I haven't used mine in the winter, so I don't know first hand.
I believe that the 2007 to 2017 Acadia AWD systems are virtually identical. The only difference in the 2017 is the ability to disconnect the rear wheels entirely, but that should simply be the addition of the programming and the physical switch (a dial in this instance) for the driver to initiate that programming.

BTW, I had virtually zero difference in fuel consumption on a 1500 mile trip to Florida in 2WD vs the return trip in AWD. The only notable difference was the performance. In FWD I had a lot of wheel spin and torque steer when hard on the accelerator. I'm sure that the traction control would have reduced that wheel spin and torque steer had I left the system enabled. I can not see the benefit to turning off the AWD, seems like another potential electrical problem as the vehicle ages with no real benefit.

2008 SLE AWD 8psg Medium Brown Metallic RIP<br />2010 SLE2 AWD 8psg Summit White / Sunroof / tow pkg Traded-IN<br />2012 SLE2 AWD 8psg QuickSilver / Sunroof / Bose Traded-IN<br />2017 SLT1 AWD 7psg Summit White / Navigation / Sunroof / Bose / Tow pkg
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post #6 of 22 (permalink) Old 05-10-2017, 11:43 AM Thread Starter
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Re: 2016 vs 2017 AWD differencs?

again, I've not driven in the snow with this car, but the equinox we test drove last year on snow and this car on dirt seem very quick to act, with no noticeable lag in engagement or wheel spin. As far as disconnecting it goes, it's supposed to save component wear, but I think that's mostly a thing of the past where older systems were meant to be very much part time and not left on.

Even with the merits of disconnecting the rear axle being questionable, I still appreciate the modes to change the shift profiles, and would at least use the trailer mode and AWD mode routinely. as far as wheel spin goes, I've never had that, but I've never been in the habit to floor it from a stop, and always get at least a little momentum going then feed in the throttle to full to avoid breaking stuff and toasting the tires. if you HAVE to floor it from a stop, find another intersection to use or wait for an opening.
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post #7 of 22 (permalink) Old 05-10-2017, 04:43 PM Thread Starter
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Re: 2016 vs 2017 AWD differencs?

also, that v8 and the acadia's v6 are very close per pound of vehicle weight
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post #8 of 22 (permalink) Old 05-10-2017, 04:50 PM
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Re: 2016 vs 2017 AWD differencs?

Quote:
Originally Posted by Isoldmysaturn
again, I've not driven in the snow with this car, but the equinox we test drove last year on snow and this car on dirt seem very quick to act, with no noticeable lag in engagement or wheel spin. As far as disconnecting it goes, it's supposed to save component wear, but I think that's mostly a thing of the past where older systems were meant to be very much part time and not left on.

Even with the merits of disconnecting the rear axle being questionable, I still appreciate the modes to change the shift profiles, and would at least use the trailer mode and AWD mode routinely. as far as wheel spin goes, I've never had that, but I've never been in the habit to floor it from a stop, and always get at least a little momentum going then feed in the throttle to full to avoid breaking stuff and toasting the tires. if you HAVE to floor it from a stop, find another intersection to use or wait for an opening.
Until the 2017 Acadia, I've only owned full time AWD vehicles for nearly 20 years. I was not prepared for the difference in available traction between 2wd and AWD, and would need to adjust my driving if I were to keep it in 2wd.

I have found that the AWD performance in the snow of the 2017 Acadia is just as poor as all the previous models. It is very obviously FWD biased and understeers far too often. I would prefer an oversteer that I could at least steer out of.

I get nearly 15,000 miles from a set of tires!

2008 SLE AWD 8psg Medium Brown Metallic RIP<br />2010 SLE2 AWD 8psg Summit White / Sunroof / tow pkg Traded-IN<br />2012 SLE2 AWD 8psg QuickSilver / Sunroof / Bose Traded-IN<br />2017 SLT1 AWD 7psg Summit White / Navigation / Sunroof / Bose / Tow pkg
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post #9 of 22 (permalink) Old 05-10-2017, 07:04 PM Thread Starter
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Re: 2016 vs 2017 AWD differencs?

The equinox we tested understeered, too, but that's because of the low rolling resistance all season tires used. We plan on buying winter tires as soon as we can source steel rims. that's not AWD, that's tire choice.
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post #10 of 22 (permalink) Old 05-11-2017, 09:34 AM
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Re: 2016 vs 2017 AWD differencs?

Quote:
Originally Posted by Isoldmysaturn
The equinox we tested understeered, too, but that's because of the low rolling resistance all season tires used. We plan on buying winter tires as soon as we can source steel rims. that's not AWD, that's tire choice.
I run winter tires. I live in the North

I'm now looking for steel rims for my 2017, the set I've had for my last three Acadia's no longer fit the new model

2008 SLE AWD 8psg Medium Brown Metallic RIP<br />2010 SLE2 AWD 8psg Summit White / Sunroof / tow pkg Traded-IN<br />2012 SLE2 AWD 8psg QuickSilver / Sunroof / Bose Traded-IN<br />2017 SLT1 AWD 7psg Summit White / Navigation / Sunroof / Bose / Tow pkg
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