I recently picked up a 92 2wd 3.9 extended cab and it has a few issues, the most concerning is a loud squeal that started early in the morning and by the end of the day it had became loud as could be even though I'd barely driven too and from work. It only happens when I'm slowing to a stop and I've just about got there or at a dead stop. It definitely sounds like it's coming from the engine bay somewhere but I can't figure out where. The second issue is when I'm slowing down and the truck goes to downshift from 3rd to 2nd it violently shutters for about 3 or 4 seconds and then goes back to normal, I bought this truck for a cheap price and I want to learn about auto repair using it but I'd appreciate any help finding a place to start.