i just bought a 98 blazer and have a few problems...i was wondering how hard it would be to replace the rear window motor and where i could find one for cheap and also ive noticed that when i drive i hear a sqeaking noise coming from under the car....any guesses??

 

Rear window motor? It rolls up/down? Or you mean rear wiper motor?

Can you identify where abouts the sqeaking is originating from? Try lubing between the leaf springs by jacking the rear up. Spray liberally. Then attack the sway bar links, bushings, leaf spring hangers, everything that moves. Try getting stuf up front too. Good luck!