Bob2C

Nope. No contact from dealer

I found it odd too but they said it had something to do with the computer learning the correct pressure so it didn’t throw a code. Maybe it was overkill. Sent from my iPhone using Tapatalk

The thing I did do but failed to mention was disconnect the battery while I installed the exhaust as stated in the installation procedure. Sent from my iPhone using Tapatalk

Don’t know what else it can be. Been like that since new and now have 12k miles on it. The only thing different is the exhaust. Just weird

Installed Gibson exhaust and the harsh downshifting is gone. Sent from my iPhone using Tapatalk

I just installed a Gibson system. Also have the Range disabler. No drone on highway. Sounds good around town. Highway hardly notice Sent from my iPhone using Tapatalk

It’s 2019 you would think buying a car would be easier. The system is so antiquated. Painful process. Just hate dealing with the BS. Sent from my iPhone using Tapatalk

Truck only has 12k miles on it. I pulled the sensor just to check and it looks spotless. So that’s not the problem Sent from my iPhone using Tapatalk

I too am having same issue on my 2018. So I posted on another forum and someone replied with body mounts not being torqued correctly. Never thought about that. Here is the link https://chevroletforum.com/forum/tahoe-suburban-25/2015-tahoe-idles-rough-shakes-85174/#post432688

Crickets

When I turn my a/c off it downshifts soo smooth. Then when I turn it back on it’s harsh again. So something is going on with the programming. Give it a try and turn the a/c off and see for yourselves.

Maybe they should follow the Tesla model. Buy on internet. That’s the price. Period. No bs back and forth Sent from my iPhone using Tapatalk

There is no requirement for the number of payments to make. The contract states no prepayment penalty. They want you to wait 6 months so they get their kickback from gm financial. I bought my car Monday. Paid off loan on Friday. Sent from my iPhone using Tapatalk

It’s just a hassle buying a car. I only go into dealership to test drive. Then if I find something I like I negotiate with many dealers. I’ll travel anywhere to get the truck. I keep them 10 years so I don’t have to deal with the hassle. Sent from my iPhone using Tapatalk

Exactly. Got almost 10k in rebates but financed through gm financial and the cost of interest after the loan was close 12k as stated on their paperwork. Perfect credit and they gave me 6.69%. If they came in reasonably close to my credit union I would have kept it. Got 2.99%. That is a lot of money in my pocket. Never made a payment to gm. Refinanced the same week Sent from my iPhone using Tapatalk