This past weekend I got to tow with my renovated 2002 Suburban 1500 with a 5.3 engine. For the past 5 years I have towed with my wife's 2011 Silverado with a 5.3 and it's been great, but now she needs here truck more and I needed a second tow vehicle. The 02 has 243K and runs like everyone else has said about those older 5.3's and it runs fantastic. After fixing a bunch of stuff on the 02 I added rear air bags, trailer brake controller, new rear brakes and some 10 ply tires. This truck has amazed me in everything that it has done, pulls better than my old 89 with a 454 except in 3rd. (89 had 4.56 gears) gets 14 mpg towing and is smooth and strong. I am thinking of adding a small turbo with about 3 to 4 lbs of boost to it next year for a little extra pulling power. The 2000 to 2006 5.3 trucks were some of the best ever. Very happy for a $1000 truck.