I have a really annoying rattle not tick coming from the front left i cant figure out what it is even jackin truck up and gettin under it ive heard it could be cat heat shield anyone else already figure this out?

 

Does it do it at any speed? Idling? Try and have a friend drive it while you walk along side. Anything that comes loose could cause it. There are literally hundreds if little things that could cause this. Maybe post a video.

 

front left? I dont know what you have under the hood, but i had a rattle, turned out to be my CAI metal shield vibrating against my headlight wiring.

 

Yea i have stock intake for now....does it mainly when i hit gas im guessin the motor vibrates something around it enought to rattle ive looked but gonna have to dig deeper