I do my oil at 50% or about 3k miles. I always change any filter/fluids prior to recommendation. Usually cheaper then the part its filtering for. I however dont believe GMC would recommend it bsfore its called for.
Sounds like you're putting on 7-10K Mi/yr. Replace it as it sounds like this will be the only oil change between now and winter. The filter is what will plug and be "gelled up" in cold weather.
Exactly! it should be replaced prior to winter and should be replaced at least once a year - mileage based or not. These are very easy to replace - spin off/spin on. It is really a 10 minute job.
They are just up selling, to keep warranty in check if needed do what brand says in your case GMC specks. I been down the road to many years and do service/IT work in dealerships I could write book about few dealers in Bismarck. Plus, my good friend and his brothers years ago where all Service Managers/ best Mechanics credentials in most of dealers in town. I have both gas and diesel trucks I do service when it tells me or what manual shows is that not way engineers set parameters. I only care in case of warranty now days. Been good all my life.
I have generally done all of my maintenance work on vehicles over the years. Age, bad knees and back have resulted in me needing to pay for some of these services this past year. I tend to look towards the GM dealers in Bis/Man for oil changes, etc. The first time in with our Acadia, I had requested Mobil-1. It appeared that they used AC Delco which I would have been ok with switching to but when I got the invoice it was listed as Mobil-1. I questioned the price and was told they are all the same. That caused me to use a different GM dealer for my 23 Sierra and then experienced a questionable up selling on the fuel filter. Just wanting to find an honest / reputable service department in the Bis/Man area.
