1994 s10 chevy 4x4 manual transmission. Driving up hill. There was a loud noise coming from under drivers side front. I actually thought it was a plane flying low, till I never saw any.

SOURCE: right front wheel plan and road noise

Best site for repairing cars
http://www.ptdoityourself.net/tl/tl_indexmain.html


http://www.2carpros.com/kpages/auto_repair_manuals.htm

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800cc71c



hope this may help;

Regards,
VOTIT


DON'T FORGET TO RATE:

SOURCE: Front differential making a winding noise and ends in a loud thump.

sounds like you need your transfer case looked at and repaired.....that the only thing i can think of...hope it helps :)

SOURCE: noise in transfer case or front differential

i had the same problem.. it is the vacuum switch on the transfer case. the switch is stuck open and supplying vacuum to the vacuum diaphram under the battery box. the switch is located on the upper side of the transfer case ( not the front differential) which is located driver side of the transmission. the switch cost me about $25.00. I replaced it myself. if you do your own mechanical work you can get it done just be patient.

SOURCE: breaking at slow speed there is a bad bearing o scrunching noise.

Yeah , You are correct. The wheel bearing is very common problem at low speed , like in a parking lot trying to park, I would take to local mechanic to have the vehcile checked out.
The repair is not very hard and no to labor intensive a few hours at most.

SOURCE: Loud clunking noise in front end over bumps

THIS IS THE REAR CONTROL ARM BUSHINGS THE BANGING IS THE CONTROL ARM HITTING THE K FRAME