Robopie

Update for my Sierra - dropped it off at the local Chevy dealer (since my GMC dealer is 1+ hr away). They diagnosed the issue and are replacing the vacuum pump and belt at no charge for me. edit: truck is fixed and feels great!

Is there a way for me to check for myself before I drop it off?

I am original owner and you both are right. I forgot that this was taken to the shop before. I spoke with the local dealer and turns out that my truck was serviced for it back in Sept 2019 with a software flash. They won't check for free, I have to pay a $150 diagnostic fee, but will not be charged it if problem is there. I'm definitely feeling symptoms of this problem so it should be covered under the service bulletin. It'll be in the shop next week. Also, thanks for the more detailed explanation of what the issue could be from. My truck only has 65k.

Interesting, thanks. I did put in my VIN in their recall and it said no recalls were found on my truck. I'll consult with my local dealer.

My 2016 is having this issue, and not in warranty and not part of recall. What exactly was the fix so I can do it myself?

*deleted - nevermind*

His truck has a 6" lift, he doesn't have a stock truck.

Read again.

I see you're in Oman, which is an extreme of most US roads.

Even without a GPS logger, it's super easy for speed to be determined on a camera by determining distance traveled from point A to point B.

I used to have that. Sold it and got a better model. Rexing V1LG. https://www.amazon.com/Channel-Dashboard-Recorder-G-Sensor-Recording/dp/B071LPV7G6/ref=sr_1_3?s=electronics&ie=UTF8&qid=1531410094&sr=1-3&keywords=rexing+v1lg Here's one that I captured:

Yes, 2" level. Rear had about 2" raised as well from airbags for towing. Twenty Sixteen - see text below my avatar.

I have 35" tires and they don't rub. 285/65r20 BFG ATs. They measure to be exactly 34.5"x11.5" on stock wheels. All I had to do was pull back the fenders, and they don't rub. Your desired size of 33x11.5 will fit no problem with stock wheels.

I have a S8 and that wireless charging port does not work well. It is slow as balls too! I plug it in to charge.

Holding lock button after 2nd click of remote will fold the mirrors (if you have electronic folding mirrors)