ssass24

After going through what I went through with the dealership not knowing how to balance a tire, and now the first snow driving with my truck on the Goodyear SR-As, I had enough ammo to justify getting new tires. They are horrible. I switched to Michelin Defender LTX M/S, and it is a world of difference. Quieter, softer, better traction in snow. You can look at the ratings on tirerack and see what I mean. I don't blame Goodyear, as these tires seem to be their budget-level tires, and I would guess all tire manufacturers have a comparable product. But for GM to select them to be put on a $50k truck is wrong.

An update on my issue...the dealership service department had my truck a total of 5 times. 4 of those 5 involved balancing. They also supposedly did a rebalance after my test drive and before I purchased it. Corporate GM was no help with a buyback. After weighing my options, I decided to go with the cheapest and easiest first. I took it to a tire place (Tireman) that I've had good experiences with fixing past cars/trucks. They did a road force balance and said the tires were out of balance. They did a "micro balance", according to the invoice sheet, and it rides much, much better. $43...boom. You can feel the difference at any speed over 40. Not like glass, but I expect to not ride like a truck, not like my grandpa's old Cadillac. So... After a month and a half of trips to the dealer, it turns out either their employees or equipment are just incompetent. Funny irony: the day I came home with a finally-smooth-riding truck, in the mail was a flyer from the dealership service department with their tagline: "we are professional grade".

Thanks for the feedback so far. I found this link pretty interesting (sorry if it's already been discussed): https://gm.oemdtc.com/753/information-on-vibration-analysis-and-diagnostic-2014-2018-chevrolet-silverado-gmc-sierra The interesting part is if you read the details of how to perform the pico test, there should be a sensor placed under the steering column. The tech had me drive the truck during the test, and also unplug the OBD plug at the end. There was no sensor hooked there. It also references a specific pico kit (with NVH) that must be used, because the normal pico test isn't sensitive to the frequencies produced by this issue. The tech also mentioned that they don't do many of them, so they were learning. So of course the test didn't produce anything of use... If it wasn't done right.

Here's a video... On a very flat, new road.

1500

@Ericruiz911 It sounds like I am dealing with the exact situation as you, and I'm not sure where to go from here. I test drove my 2018 Sierra SLT crew cab around Oct 28th and told them I felt the vibration at 65 mph. Not being aware that this was a chronic problem, I believed the salesman when he told me that they would balance the tires and that would get rid of it. I bought it on the 29th and immediately called them saying the problem was still there. They said it may need road force tested, and to bring it back in. I did... They performed the road force test and discovered that most of the tires were out of spec, and they would replace them all. Took a few days for the tires to come in, and they replaced them. The problem didn't change. Called them back... They said they would have a different tech who is a tire balancing wizard preform the balance, and that would fix it. It did not. At this point, I was curious if I was getting close to any limit for returning the truck or if there were any rules for that... So I called GM customer satisfaction. The operator told me I would have to start the buyback process. Ok. As part of the buyback process, GM engineering requested vibration test results. They had me drive while the tech recorded data on a laptop. The tech could see the steering wheel visibly shaking while doing the test. GM came back with no recommendation for a fix, based on the test results being "within spec". Today, the GM rep called and said the buyback was denied, due to the results being within spec. The dealer says there is nothing else they can do, and GM won't accept that the product they sold me is defective... So what now? The way I see it, options are: 1) Get a lawyer and go through the lemon law process 2) Deal with the shake and the possible future issues the truck will have from shaking so much 3) Take it somewhere else to get repaired, which will cost money, and possibly void the warranty 4) See how much Dodge will give me toward a new Ram Any help would be appreciated. The customer satisfaction rep didn't seem to care that this is my 7th (and last) GM vehicle.