I just switched out the stepper motors in my 03 and thought i would share how to complete the project. on ebay you can order the stepper motors and for all of them (7) was 46.00 shipped to me.
first unhook both batteries!!!! remove the instrument cluster and take the plastic lens off. next move all of the needles counter clockwise until they stop. take a piece of masking tape and tape it on the backing board and mark where the needles are.
next remove the needles by twisting them counterclockwise and pulling up until they come off.
now remove the back of the cluster (plastic) until you see the circuit board. unsolder the 4 pins and remove the old stepper motor. re solder the new stepper motor in. (they can only go in one way cause of the tab that goes through the board)
once those are all soldered in put the needles back on the gauges and turn them so that they read in the same spot that you have marked with tape and a marker.
pull the tape off and put together the cluster and put it back in your vehicle. I tried to upload pictures of all of this in steps but it kept telling me there was an error... good luck to you all!