Chevy & GMC Vans

I have new front seats from a 2022 Chevy Express 2500. They did not come with track/slider or hardware etc. Anyone know what size the 4 bolts are that hold the seat bottom to the track? I believe they use a 10mm whench. I don't have any to compare. Thanks

bolts with 10mm heads are usually M6. You can always just ask your dealer to order you some. They have a catalog.