Mitsuboost30

I have 275/55/20s Calls for 32psi

Just picked my truck up after its first visit to service for the vibration. They RF balanced all 4. One was 29 grams out. It does ride better however I will be paying special attention for more vibration. I have also marked my tires/rims after the visit.

Interesting. The truck recommends 32psi on all 4. I wouldnt think the PSI in the tires could have that much effect??

I have just dropped my truck off for its initial "service" of this issue. After taking the shop foreman for a ride and him trying to blame it on the suspension (and myself being very educated from this forum). He finally admitted to it "vibrating". Then when we got back to the service counter, (keep in mind this is my first interaction with the service dept as my truck has 2000 miles) the service manager comes out and asks if I'm interested in a buy back from GM. I say "If that is an option and the issue can not be fixed, then yes later I would be". He swiftfully tells the service advisor to give me GM's buyback # and says they are not going to get involved....... My blood starts to boil and I explain they still need to service/test the vehicle as I need a service record before I would even attempt to get a buyback. Also after repeatedly explaining I like my truck I want to keep it, he finally realized this is my first visit and they have never touched the truck. They finally say they will look at it even tho it is a "normal" vibration...... LOL. No loaner vehicle yet as the truck has not been there over 24hrs and SA insisted they would have it back to me by tomorrow....... Im sure I will be seeing them many many times here in the next few weeks. I know my situation is just beginning... However I do want to thank all for your great surplus of info/experiences. I will post as things progress..

Should have read the known issues on the forum prior to purchasing my 15 Sierra SLT z71 11 miles when purchase (2100 currently) - 3-4 Months of ownership. Truck is going into the dealership Wed for the vibration issue. Have also notice radio reception issue. AND Whine in the rear end. (didn't think anything of it as it was a new truck) I guess the battle begins........... This is ridiculous. Model Year---- 2015 Model -----------Sierra Pickup Wheelbase---- crew Engine -----------5.3L Drivetrain ------4wd Wheel Size ----- polished 20" Last 6 characters of VIN -----405329 problem -----vibration, radio, rear end whine has reported to GM dealership---First visit coming up 12/9