blackfly

I've been back to the tire shop twice for balancing. They even had a tech come out and calibrate their tire balancer. Still had a vibration. Took it in for the road force balancing, and the vibration comes and goes, but is still noticable. Unfortunately, our roads here in the winter aren't very smooth now, so the vibration is usually overwhelmed by the rough roads.

I've got the same issue with vibration at highway speed on my new 2024 Sierra 1500. I had just put new winter tires and wheels on when I noticed the vibration, and just got back from the tire shop where they rebalanced two of the wheels. However, the vibration is still occurring. I didn't notice the vibration with the stock tires and wheels, but now I'm using 4WD Auto now (we have snow here), which I wasn't using with the stock tires and wheels. I'll have to see if the vibration still occurs when I switch back to 2WD, and if so, it's off to the dealer.

I've got a 2024 Sierra 1500, and have a lot more wind noise (B pillar?) than I did with my 2015 Sierra at highway speed. I can't feel any air movement around the door, so I'm wondering if it's just the design of the B pillar that is creating the noise?

This happened to me about a month ago (2015 SLT AT with 6.2, 8 sp). It was about -20C, and I had just driven about 10 blocks, shut the truck off for about 15 minutes, and then it wouldn't start. Cranked over several times until low battery indicator came on, and then truck finally started, but in limp mode. I drove it through the city with reduced power message and check engine light on. Got home, turned it off, and it started up and ran fine. I checked the code, and got a P1682 (Ignition). Took it in to the dealer, and they found a bulletin on this (PIT5253B - Engine Control Module Mini Relay), so they replaced it. Truck has run fine the few times I've driven it, but it hasn't been cold here since (Edmonton, AB).