Tu as dû chercher au même endroit que moi
Voilà ce que j'ai trouvé sur un forum ricain :
For instance, your 90 is a K2500, I can see it's 6-lug so it's the lighter duty truck. A 1990 K2500 Extended Cab 8' bed is rated for 7,200 GVWR, with a max payload of 2108. So, that 2108 should include the fuel, passengers, cargo and weight of the trailer hitch on the truck. Keep in mind the modifications you have done to the truck all should, technically, decrease this as they all add to the base weight of the truck. I cannot find the GCWR for a 90 truck.
Pas d'inquiétude, donc !