I think it's safe to say most of us want to hear our v8 trucks! Well chevy has made these things nearly silent from the factory so this is definitely a must do first mod to enjoy your truck more! This is on a 6.2 but will be same as your 5.3 just different pipe.
You can get this done even cheaper if you go to an exhaust shop and just get a pipe welded in!
Install begins at 1:39
Cut exhaust startup/rev at 3:20
Completed first start at 4:34
Interior first drive at 5:16
exterior revs/normal acceleration/full throttle at 7:17
Update at 12:15