What does Chevy say about loading a camper on your truck. Some manufacturers will state that a slide-in camper is not recommended for the 1/2 ton models. By the time you equip your a camper with gear, food, propane, water, etc. you are most likely to be way overloaded. Dangerous situation. My last camper was on a one ton dually that was overloaded even though the truck seemed to be able to handle the weight. I never felt comfortable operating an overloaded rig. I strongly recommend that you hold off until you can get a truck that will handle the weight of a camper. With your current truck, you are probably better off towing a small TT or popup than a camper.
2005 Winnebago Sightseer 30B, F53 Chassis