I have a Chev Silverado 1500 4WD 4 door and was looking for something that would help with towing and towing. I have to say, I've wanted a set like this for a long time! They work both loaded and empty. These load-matched Sensa Trac rear shocks and Monroe Monotube Reflex front shocks work really well together! Great handling with or without a load, it doesn't matter. I love this facility! NO, Monroe 58637 Sensa-Trac Load Adjustment shock absorbers do not make noise like in a review I read. Feel free to ask any questions. . .