You have to locate the source of the noise then repost your findings.
why is there squeek noise when starting and then goes away when engine warms up
your engine is loud because, the fan makes that noise
Sounds like a fan belt. Have it checked. or an sai motor
If the 1999 Suburban noise is a sort of loud banging noise, the problem could be that the engine have jumped time. Jumping time would cause the noise and jerking in the engine.
The fuel in the cylinders exploding
i have a very loud tapping noise in my BMW 318i e36 1993 engine. its extremly loud on start up then drops down to very loud when idling. the noise never goes away. I've had people say the engine was about to throw a piston, i need a new engine, etc what could it be and is it possible to fix?
Muffler
Yes, a tornado is loud because of the high winds swirling around it, which can produce a loud roaring sound. The noise is often compared to that of a freight train or jet engine.
Loud engine noise is usually a result of a hole or disconnection in the exhaust manifold or muffler.
It would depend on what part is making the loud noise. We are going to need more info.
Stuck hydraulic lifter.
Because the loud brum brum engine! Make sure if your a child you hold your baby ears!