v6 go into v4 mode much? - Page 2 - Chevy Colorado & GMC Canyon
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post #21 of 78 (permalink) Old 01-28-2017, 12:07 PM
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Then again. . maybe the V6 to V4 light is lying?

Maybe the engine is using V4 mode more than the light indicates.

Anyone hook up a scanner to a 2017 3.6L yet and see what is happening while driving?
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post #22 of 78 (permalink) Old 01-28-2017, 12:34 PM
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Have not tried on the Colorado, if I did, I might forgot. Does it have an engineering mode? The Pontiac G8/Holden VE has that mode. Once you get on it, it has an idication for the AFM/DOD at the Fuel Management entry. You can drive around and see when is on Full or Half mode.
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post #23 of 78 (permalink) Old 01-28-2017, 02:05 PM
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Originally Posted by GeorgeT451 View Post
Remember that great Cadillac 4-6-8 engine from the 80's, me neither: Matt Garrett - Cadillac V8-6-4 Home Page . It was just a poorly engineered gimmick. The technology to deactivate cylinders is much more advanced today but it is still a "feel good" gimmick: it takes the same amount of energy to move 4,000 lbs. down the road regardless of the # of cylinders, it's the starting from a dead stop and accelerating that sucks up fuel at a greater rate in larger motors. This is just something else to go wrong with an already complicated motor.
I agree except the feel good part, now it is a satisfy the government thing. The crazy things they have to do to engines to squeeze every bit of MPG out of them is getting insane. They allready force our little V6s to lug around at 1500 rpm, now this? Jeeeez.....

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post #24 of 78 (permalink) Old 01-28-2017, 07:05 PM
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Wow! I purchased my Canyon used, a 2016 V6 auto. Glad I didn't buy a 2017. I remember the Cadillac 4-6-8. What a piece of junk that was.
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post #25 of 78 (permalink) Old 01-28-2017, 07:14 PM
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Yes, the 4 6 8 was garbage but now days is not bad. My G8 has the L76 engine, with over 115,000 miles and never skipped a beat. However, some reported issues with them.
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post #26 of 78 (permalink) Old 01-28-2017, 07:16 PM
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Wow! I purchased my Canyon used, a 2016 V6 auto. Glad I didn't buy a 2017. I remember the Cadillac 4-6-8. What a piece of junk that was.
That car came out in 1981. American cars are much better today in every respect. Remember the Oldsmobile diesel? Another badly implemented concept. Is that a reason not to buy the diesel pickup? No.
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post #27 of 78 (permalink) Old 01-28-2017, 07:17 PM
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Wow! I purchased my Canyon used, a 2016 V6 auto. Glad I didn't buy a 2017. I remember the Cadillac 4-6-8. What a piece of junk that was.
Well. . this is a totally different system and has been in use in Cadillac and some other vehicles for several years in this same engine and many more years in previous engines. None of the kind of issues that 4-6-8 has had.
Plus, it seems not to engage much at all.
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post #28 of 78 (permalink) Old 01-28-2017, 07:21 PM
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Originally Posted by Donlx View Post
Its odd - like I mentioned, on my new SS camaro with the 6.2L, it goes from V8 to V4 quite frequently.
That's not odd AT ALL:

Light and aerodynamic 6.2L with 455 HP
vs.
Heavy and boxy 3.6L with 308 HP

Pretty crystal clear why they behave differently...
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post #29 of 78 (permalink) Old 01-28-2017, 07:26 PM
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I remember the Cadillac 4-6-8. What a piece of junk that was.
That was 37 years ago man...technology has evolved a little.

That's like not buying a new Macbook Air because you recall how the ENIAC was a piece of junk...
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post #30 of 78 (permalink) Old 01-28-2017, 07:58 PM
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its only suppose to deactivate at LOW speeds
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post #31 of 78 (permalink) Old 01-28-2017, 08:48 PM
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With the aerodynamics of the truck (which are fairly poor) and weight, I would be really surprised if the AFM on the 17' V6s makes much of a difference. I have to imagine the road conditions where the engine in 4 cylinder mode has enough torque to maintain cruising speed at low RPM are probably few and far between. Its probably useful at sustained speeds around 30MPH or maybe higher speeds on level ground or downhill. This is likely GM just trying to eek every last mile out of the gallon and a no-brainer to implement because they already developed the technology. I'm sure it'll be considerably more effective in their more aerodynamic vehicles, like the Camaro.
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post #32 of 78 (permalink) Old 01-28-2017, 08:51 PM
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Sorry guys, I'm going to be 70 years old in a couple of months and I remember the Cadillac 4-6-8 and the Oldsmobile diesel like it was yesterday. The American cars built back then had some problems. Purchased a new ford with a 289 V8 in 79 and with 900 miles on it, it actually blew up in the drive way. Switched to GM and never purchased another Ford. I hold a grudge, and remember what motor city tried to sell as new and different.
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post #33 of 78 (permalink) Old 01-28-2017, 09:24 PM
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My 2017 Canyon hardly ever goes into V4. Usually when exiting a highway it will go into V4 for a bit, but that's about it.

I've driven a 2012 Sierra and a 2016, both with the 5.3 and AFM. The 2016 has more hp and torque and will go into and stay in V4 longer than the 2012, so I just assumed the 3.6 Canyon engine doesn't have enough torque to go into and stay in V4 for very long.
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post #34 of 78 (permalink) Old 01-28-2017, 10:13 PM
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My wife's '15 Tahoe transitions from 8 to 4 a lot, staying in 4 after coming down a slight incline on level ground at highway (70 mph) speeds. Wind direction makes a HUGE difference. With a tail wind, it stays in 4 for miles (and maintains about 26 mpg in the DIC). With any headwind, it switches back to 8 upon the same stretch of level highway (and maintains 20 mpg on the DIC).
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post #35 of 78 (permalink) Old 01-29-2017, 08:50 AM
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Probably a stupid question, how can I tell if it is only using 4 cylinders?
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post #36 of 78 (permalink) Old 01-29-2017, 09:36 AM
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Originally Posted by Dch311_03 View Post
Probably a stupid question, how can I tell if it is only using 4 cylinders?
Put it on the trip A or B DIC screen.while driving. In the lower right corner of that screen the blue V6 will switch the lime green V4 when it shuts down a cylinder.
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post #37 of 78 (permalink) Old 01-29-2017, 09:43 AM
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Now if you like cylinder deactivation, you will love driving a car that shuts off at lights only to restart when the accelerator is pressed. Test drove a car with this feature and it was one of the worst driving experiences ever.
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post #38 of 78 (permalink) Old 01-29-2017, 09:48 AM
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Originally Posted by GeorgeT451 View Post
Now if you like cylinder deactivation, you will love driving a car that shuts off at lights only to restart when the accelerator is pressed. Test drove a car with this feature and it was one of the worst driving experiences ever.

If you drive a car that has the engine shut off at stops. . that is Stop/Start control. .. . not cylinder deactivation. Two different things.. .

The new LGZ Colorado/Canyon engine ONLY has cylinder deactivation, sometimes also called DOD. . . or Displacement On Demand.
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post #39 of 78 (permalink) Old 01-29-2017, 10:01 AM
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Originally Posted by GeorgeT451 View Post
Now if you like cylinder deactivation, you will love driving a car that shuts off at lights only to restart when the accelerator is pressed. Test drove a car with this feature and it was one of the worst driving experiences ever.
This truck does not have that...And those that do it can be turned off. Cylinder deactivation is seamless and unless you have it on the right DIC screen you would never know it occured. For folks saying they are glad they got the 16 instead...That is just crazy. The new drive train is superior in everyway to the outgoing V6.

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post #40 of 78 (permalink) Old 01-29-2017, 11:32 AM
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If you checkout Jeep Cherokees you will find out SS can not be disabled.

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