2016 Tahoe LTZ with pressure issue. Best course of action is???

[phantasms]

We have a loaded 2016 Tahoe LTZ which is primarily my wife's car. She has been complaining about pressure issues with the car since day one but they weren't that bad. Now, with 22,222 miles, it's terrible. We purchased it in October of 2015 as one of the first 2016s as I was waiting for the 2016 model due to 2015 issues and HUD. Odd thing is when I installed the diablo and got rid of V4 mode it was not gone but better for her. Now, even with V4 mode tuned out, it gives her a pounding headache. She was not aware of the pressure issue of the 2015s and frankly almost never complains about a thing. I am unable to feel the pressure issue. On the highway when its untuned she's able to say exactly when it goes into V4 mode and starts hurting worse. Sadly now in V8 mode always it always hurts her. The other day she said I don't want to drive into the city because I don't want to be in the car that long. I realized ok let's fix this or get the car lemon lawed. No sense in paying $70k for a car then not wanting to drive it. I spoke to the dealer about it once and they looked the B pillars and said that there's usually an indicator there but it looks fine. So what's my best course of action here? Obviously bring it to the dealer but I'm concerned because my wife it the only person I know who can sense the issue. Frankly I'd be happy to get rid of the car without taking a bath on it. I could be wrong but don't see this issue ever getting resolved.

Thank you!

Best,
Gene

FWIW the truck currently has Blizzacks on it but usually has the stock all seasons. Runs 22" because dubwife.

 

[gat0r]

take to dealer & test drive w/ wife & service mgr.
then have them call GM... as there really isnt a definitive fix

there are a few things that can reduce it.
Dealer should have a list of things to try...
(i say try b/c they still havent sorted it all out)

stuff i have seen/heard, so far: (small list)
-get rid of crap GM bridgestone tires (have dealer get you something of quality)
-road force balance your new tires
(rim size doesnt seem to matter)
-update roof reinforcements
-change out front &/or rear driveshaft
-replace entire rear end/differential
-disable AFM w/ either range device or a tune
-change body mounts (this is new update on 17's, *** still doesnt fix issue)

there are quite a few threads on this topic. w/ quite a few peeps getting buy backs, after a lot of hassle.

recent... http://www.tahoeyukonforum.com/threads/2016-denali-xl-sigh-im-a-stubborn-guy.89832/

for now it seems most vehicles either have the issue or not. most have. there is no rhyme or reason.
i have a '15 ltz burb 4x4... no issues so far. <knock on wood>

 

[Glocksub]

Gat0r has covered everything I've seen in my research as to the contributing factors to the issue.

If I were in your shoes, before beginning the back and forth with the dealer, I would decide if getting rid of the vehicle very soon is financially feasible and an agreeable option for you and your wife. If the answer is no, then your only obvious next step is to take it in and see what if anything they will do and if those things fix or reduce the issue enough.

But if selling or trading is an option, you've got to decide how much time and/or money (if any) you're willing to spend on a problematic vehicle before you unload it and move on to something else. I've read that most dealers will not cover the cost of switching to the Michelins from Oem brand, even on a truck that's still under warranty, so that will be over $1k out of your pocket to switch tires and hope that reduces or eliminates the problem.....if you like the vehicle enough to try that, maybe that's not a big deal.

I've got little patience for the repeated trips to the dealer and the dead ends of being told "that's how they all are" or "it is operating as designed". So, my tolerance level may be different than yours. I was told 3 or four times during ownership of a 2015 Silverado pickup that the constant clunks and metal on metal sounds that my transmission made intermittently was "normal".....all before 12k miles. So, I didn't own it a full year.