How many of you DO NOT experience buffetting and vibration problem?

[Weber Dude]

V4 drone around 30-40 mph with my foot barley on the gas peddle. Foot off the pedal it's fine. Push the throttle just a little bit more and it's gone but still in V4. M5 and I don't have to listen to it. Wish V4 only kicked in at freeway speeds. No vibration up to 85. That's the fastest I've driven in it. The trip I took this weekend, cruise set at 80 most of the way. My 4 yo girls love the Yukon and would rather ride in it than my Silverado. My wife has no issues either.

 

[cardude2000]

V4 drone around 30-40 mph with my foot barley on the gas peddle. Foot off the pedal it's fine. Push the throttle just a little bit more and it's gone but still in V4. M5 and I don't have to listen to it. Wish V4 only kicked in at freeway speeds. No vibration up to 85. That's the fastest I've driven in it. The trip I took this weekend, cruise set at 80 most of the way. My 4 yo girls love the Yukon and would rather ride in it than my Silverado. My wife has no issues either.

Bummer about the drone. Is the dealer working on it?


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[Weber Dude]

Bummer about the drone. Is the dealer working on it?


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Nope. Haven't taken it to the dealer. I need to for a couple other warranty issues and I will bring this up or see if they can just program out the low speed v4 mode.

 

[cardude2000]

Nope. Haven't taken it to the dealer. I need to for a couple other warranty issues and I will bring this up or see if they can just program out the low speed v4 mode.

Well for droning they've been reattaching roof bows and adding insulation I think? Not sure how much luck people are having with that.


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[Weber Dude]

Well for droning they've been reattaching roof bows and adding insulation I think? Not sure how much luck people are having with that.


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Mine isn't roof bows. Sound is coming from below me. Roof is fine. Driving in M5, it's quiet at all speeds, switch over to D or M6 the V4 low speed drone comes back. Nothing at high speed. That's why I wish V4 didn't activate until over 55mph.

 

[motorswin]

So I have noticed most of the issues are the roof, rims, or while in v4 mode. Does anyone with a lowered/altered suspension have these issues?

 

[Shadow17]

Personally I would not go to the great lengths some have in here in having roof bows reattached, drive shafts replaced, etc.
This is a problem that has existed in GM vehicles with AFM for many years.

Removing areas of vibration are nothing more than a band aid to the problem, the DOD cam.

There are two ways to easily deal with the problem: 1) Drive in the manual 7 mode(8 speeds); 2) Buy a tune or module to remove the AFM.

The dealership cannot and will not ever truly fix this problem. Like I said, it has existed for DOD vehicles for years and I have never heard of the DOD cams being replaced or removed under recall.

I paid $200 for a module that removes the AFM and the truck drives with no vibrations, humming, etc.
$200 investment in an $80K SUV...no problem.

 

[cardude2000]

Personally I would not go to the great lengths some have in here in having roof bows reattached, drive shafts replaced, etc.
This is a problem that has existed in GM vehicles with AFM for many years.

Removing areas of vibration are nothing more than a band aid to the problem, the DOD cam.

There are two ways to easily deal with the problem: 1) Drive in the manual 7 mode(8 speeds); 2) Buy a tune or module to remove the AFM.

The dealership cannot and will not ever truly fix this problem. Like I said, it has existed for DOD vehicles for years and I have never heard of the DOD cams being replaced or removed under recall.

I paid $200 for a module that removes the AFM and the truck drives with no vibrations, humming, etc.
$200 investment in an $80K SUV...no problem.

the steering/whole vehicle violent vibrations felt at 75mph+ are AFM related?


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[Redjet 10]

I have this problem. I have had what they call the transmission service bulliten done twice by two different dealers. They have said it is clutch chatter. The second attempt was done yesterday. Today the transmission stuck in approximately third gear. I drove it directly to the dealer from the day before, kept it running and had them check it out. They said it showed no codes then reset the tcm. It still shudders in v4 mode between 1100 rpm and 1600 rpm. If you go to manual and change the rpm at the same speed it goes away. As cardude 2000 said it doesn`t do it above 70 mph. Techs at both dealerships said that there is no fix for it.

 

[Shadow17]

the steering/whole vehicle violent vibrations felt at 75mph+ are AFM related?


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Most seem not be having those problems.
To me that sounds like a wheel/tire issue. I'd start with a good road force balance.