You need to check the exhaust at first. Then Check the heat shield, U-joints, transmission mounts, transfer case fluid and condition. Check to see if the noise happens in first and second on the manual range and if forward changes it. If you are experiencing this problem with a/c on, then the problem is the compressor itself. This condition may be caused by liquid slugging of the A/C compressor. This condition may cause an internal failure in the A/C compressor. The serpentine belt tensioner and serpentine belt may also be damaged. Replace them soon.
loud rattling noise when idling.
It could just be the heat shield on the under side of the catalytic converter.
Check for a loose catalytic convertere heat shield
No
If it makes a clicking, grinding, rattling, or other noise when you accelerate with the steering turned it is not safe.
bad transfer case
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.
Many different things can cause a rattling noise in a Mazda tribute. Stark by checking the engine belts and all brackets for anything that could be loose and causing a rattle.
Most likeyl cause could be a bad pulley
The rattling noise is in there so you can move the head around.
There are a few things that might cause an air conditioner to make a rattling noise. It could be that the there is dirt and debris in the cabinet. If this is the case, cleaning the cabinet should stop the rattling. The reason could also be loose panels on the cabinets. The fan could also be bent and no longer straight.
There could be numerous reasons why a Suburban is making engine noise at start up. It could be anything from a blown gasket to a spark plug. A mechanic will be able to find out the cause of the noise.