GMC has a 500 mile break-in, and I drive a lot for work, so instead of the car, I'll drive the truck a few days - 500-700 miles will be easy to get on it in a week.
I get the debt of a new truck. We haven't had issues (other than the door handles falling off!) with our current truck though recently we've suspected an exhaust leak, which the dealer can't find, but my antifreeze is often showing under the 'min' line. I've filled it twice since May. So there is a risk of head gaskets or injectors being bad - which would be covered by the extended warranty, or cost a lot out of pocket. Either way, expense and down time. I believe my husband's issue is that we go long distances a lot to camp, and often it's just me and the kids with the rig (I've put about 7000 miles on the truck/trailer this year). I think he prefers not having to worry about something going wrong.
As for the spacers, they are standard with the 8 to 10 lug conversion. Anything more than 1/2 inch in PA will not pass inspection. I guess other mechanics at the other dealer were not aware of how the conversion works and probably never had the wheels off it, hence they didn't notice them? I have no idea why it wasn't mentioned before, but we bought it with 8000 miles on it in MD, so I guess no one noticed.
I realize it doesn't make sense - heck, I'm the one sitting here whining that I don't really want a new truck. As someone mentioned, it's set up, it's ready, and it's easier to keep it. I really don't think it has leak issues, but yet, it's a chance one takes. Meh, I'm sure I'll like the new truck. I just liked my old one too. Everyone hauls on stock tires, so they should be fine.
Me, DH, 2 rugrats
2016 GMS 3500 DRW (aka Benny) (sadly gone)
2012 GMC 3500 DRW (aka Bernie) (sadly gone...)
2013 Keystone Fuzion 342 (aka Bertha)(also sadly gone...)
2019 KZ Venom 4012TK (Large Marge the Buttercup Barge)
2020 GMC 3500 DRW (Homer)