first it is a 2000 cherokee 4.0 4wd auto. when im driving at highway speed if i dont hit the gas it makes a sound like a mouse squeeling untell is hit the gas at 25 of way down, 2. rear hatch is stuck it wont open at all it like it jamed , 3. the dash sounds like it viberating all over the place sounds like metal . i have a 9 month old and she couldnt sleep bec of the sounds

 

figered out the hatch and fixed dash

 

Could be anything get under her and inspect. A common issue is this.

If it sounds like a bird chiping it could be the Center Ball Joint. I crawled under mine and moved my front drive shaft back and forth and heard that the chirp was coming from it. So I removed the drive shaft and drove down the road to be sure and sound was gone. you can rebuild your drive shaft if you are mechanically inclined or buy the Crown Drive Shaft Flange a little easier. You will just have to do the u-joints. about $100 for that part Flange $15ish for u joints. or you can buy just the CV center ball bearing. $40ish and replace just that part. I had no issue with mine. I actually just done it with a hammer and socket. Sometimes it takes a press. Just have to make do with what you have.

 

Could be ujoints on rear drive shaft as well. easier job there and cheaper lol. Tons of threads on rebuilding u-joints on drive shafts. If one of those are your issue. It would be a good idea to fix soon. hate for it to spit a joint out rolling down the highway. Will cost you lots of money then.

 

Try something else, maybe she prefers post-punk or alternative.