2015i Tahoe LTZ - 9 months later - Rough idle, whistling wind noise, 4WD squeek

[Tommytuna]

ALl in all, 9 months into having our truck we still love it. I'm not sure if my current issues are just the way things are with this truck so I thought I would post before taking to the dealer and see if many of you fine folks have already got these figured out.

I got a chance to drive my wife's Tahoe 2015 LTZ quite a bit. My wife is so patient and doesn't complain much about things. That being said, I noticed three issues still persist:

1) Rough idle - at times at a traffic light the engine will idle rough. We had the TSB performed last april where they shimmed the motor mounts and it made it better but I think it is back now Grrrr

2) Wind noise - whistling at certain high speeds that seems to come from front of vehicle / mirrors. They changed sun roof seal back in summer but that made no difference. It is a true whistle sound. Anybody else figure this one out or get it fixed?

3) 4WD mode - squeaks a bit when I put it into any of the 4WD modes. I believe this was discussed extensively in the past and last I saw there was no fix.

We had the leaky antenna as well and it went in twice for that repair. Finally seems fixed.

Other then these "silly" issues, the truck has been great. After the big snow fall the other day, I motored around on the Blizzaks in 4WD with no issues.

 

[hundhaus]

2) Wind noise - whistling at certain high speeds that seems to come from front of vehicle / mirrors. They changed sun roof seal back in summer but that made no difference. It is a true whistle sound. Anybody else figure this one out or get it fixed?

3) 4WD mode - squeaks a bit when I put it into any of the 4WD modes. I believe this was discussed extensively in the past and last I saw there was no fix.


I have had both of my Denalis (regular and XL) in for the same repair to loose plastic facia panel on the rear of the front doors. It made a noticeable wind sound and when i looked they were loose on both trucks.

the 4wd noise has a recall open to address but I can't touch it on my Callaway due to ecu programing upgrades that could be wiped out during dealer reflash. I did do the recall on my XL

 

[Tommytuna]

how loose was the plastic? I couukd push on mine and it would flex a bit but didnt seem completely loose.

so GM finally has a fix for the 4wd noise issue? I will definitely take it in and get that done.

Rough idle is still annoying.