I've been driving Blazers for 15 yrs,...2WD and 4WD's...pulled 19 and 20ft Bass boats all over Michigan with every one of them..never had a problem. I have a 2001 2Dr 4WD "Hi-Wider" (Z71 Off Road Pkg) that I pull my current 901 with....my only complaint??..I have a drastic drop in gas mileage when i pull the boat!! Other than that,..NADA!!..LOve it!!!
I had one before Mac..... The second year they came out - 1984, 4 wheel drive, 3.8(?) V-6, 2-door. Put something like 170,000 miles on it. It spent a LOT of time with a canoe on top running down some of the nastiest, rutted fireroads in the Ozarks.....
Only problem I ever had was the transmission. The third time it had to be rebuilt, I sold the truck. But that was only in the one model year.