Question: is a gmc 2500 a 3/4 ton?
Answer: A 2500 is a 3/4 ton. With pulling just 4,000 pounds you could use a normal 1500 with a 5.3 v8. So in summation that can easily be pulled with a 1/2 ton with a v8 in it. You can find all the towing capacity information you need from the Chevrolet website.