Where are you getting the 1900 payload number? Thats a brochure number not a real.It sounds like you have a 1500 series truck. Please look for the yellow decal driverside door jam. Will look like the one shown Long or short bed truck ?I have a 2020 Silverado 4 x 4 pick up crew cab with a four-cylinder. My payload is 1900 pounds. Thinking of getting a pick up camper any suggestions on used models and what weight I should look for?