4 Wheel Drive/SUVs: service 4 wd light, amp fuse, chevy blazer

Question
the 4wd does not work in my 2000 chevy blazer. the service 4wd light was not coming on when i started the car. i checked the fuses and the 20 amp fuse under the hood was shot. i replaced the fuse and now the light stays on. the 4wd still does not work. my question is what is the possible problem and what is an approximate repair price?

Answer
Matthew,

Many times, this is caused by a bad ground, or broken wire.  Since the 20 amp fuse was blown, I would suspect that a wire has broken and shorted out, or a solenoid has shorted.
Without looking at it in person, it would be almost impossible to estimate a price.  Many shops charge anywhere from $65 to $125 per hour depending on your location.
I would suggest that you purchase a repair manual ($20 or so) from your local auto parts store.  These manuals have full trouble shooting sections and wiring diagrams.  They are invaluable if you plan on doing any trouble shooting, or work on your own vehicle.

Carl