it might be your drive shaft or transmission going out.
This could be a bad strut or ball joint. If the noise is constant when you drive this is probably the cause. If the noise only happens when you hit a bigger bump/pothole I would check your motor mounts, this was the cause on my thunderbird.
Could be a universal joint. If front wheel drive, it could be the constant velocity joint. I am assuming you have an automatic transmission. If it is a standard transmission, it could be the throwout bearing.
On a front wheel drive car probably a damaged constant velocity joint clattering
There can be several things that will cause your 1994 Jeep grand Cherokee to make a loud clanking noise when you drive it. The most common cause is a bad u-joint.
A pebble.
possibly a bad brake...you should get all brakes done
If its front wheel drive possibly an axle.
it could be a bad universal joint.
An accessory drive belt idler pulley bearing going bad.
If the chirping noise speeds up as the truck speeds up, check the u-joints in the drive line.
The rear of a Ford Explorer may have a grinding noise when driving, because the muffler may have came loose. The u joint may also be loose and cause a grinding noise.
Sometimes squeaky noises can be a result of a damaged belt. When you speed up, the noise goes away. You should get your car inspected by a mechanic.