exhaust noise

i have a 03 silverado 4.3 reg cab short bed, theres a rattle in the exhaust on take off to about 2500 rpm then goes away after but always happens on takeoff and when light into throttle
any one else have this issue??

Sounds like a hanger came loose. Crawl under the truck a giggle the exhaust, you should be able to tell where it is comming from.