I started my blazer today (01 LT Trailblazer auto), and before you crank it over, the dash lights: security, seat belt, airbag, hand brake, service 4wd, low fuel and hand brake lights come on, you crank it over and they go out, like any normal blazer will do.

Problem is, after the thing runs for a few seconds, they all come back on and stay on, ive also lost the fuel guage (wont register the amount of fuel in the tank - its full by the way), the temp guage also registers nothing.

Tried turning it off, and restarting, same thing, tried pulling every fuse to check those, they are all ok, locked the car, left it for awhile, and then tried again, same thing.

What the hell could be doing this ?!?!?! i know the truck has a full tank, and i can drive around normally, but it would be good to know my temp and fuel are ok while im driving, but it would be a bonus for the other lights to go out like they should too!

Any ideas ?!?!?!?!?!?! HELP!!!!