How do you change the dash lights on the instrument panel?

The dash lights are connected to the park lights. Check to see if the park lights come on. If no park lights, suspect a fuse or wiring issue. If park lights are ok, try slapping your hand on the dash area above the instrument panel to see if the lights come on/flicker. If there is a change, the instrument cluster assembly/electronics are the most likely cause of this problem

Kevin, unfortunately this requires removal of the instrument panel. The bulbs are screwed into the circuit board on the back of the instrument panel. This can be a messy job if you've never had one off before.

There are small replaceable bulbs behind the instrument cluster, they are installed in twist lock sockets usually, you have to pull the instrument panel to change them, #194 is a common dash bulb

check your dash light dimmer switch. it is usually by the headlight switch, it might of gotten bumped accidently. if this doesn't fix your issue then i need to know if all dash lights are out or just the ones in the instrument cluster.

I did see where there is a fuse under the hood for the dash lights.
Other than that the dash light rheostat could be bad. In my old model cars the light switch on the dash, you would turn it clockwise to increase illumination of dash lights. The cars I have had since has button which you can push in to lock/unlock and turn clockwise to illuminate the lights. This is my best guess at this time. If someone has done any work under the dash need to make sure nothing is loose or not plugged in.

Dash lights are on the same circuit. They can be replaced. If you have the instrument cluster out might as well change them all. to remove them just twist 90 degrees.

Check the ground wire to the instrument panel.

if you cannot reach the light panel from under the dash by laying on yer back with the aid of a flashlight then,.....there are screws underneath the dash itself and this is somewhat moderate as you'll need to find all the screws and remove them to allow the instrument cluster to drop down and tilt forwards to access it that way ...but I would try the first method if it were me.......hope this helps you.

The whole dash bezel has to come off but are all the dash lights out? if so check the switch for dash lights on a 01 it is built into the turn signal handle I think check it to make sure it's not set to off for dash lights

Changing the bulbs can be a difficult task, involving the removal of some of the dash panel and such. Check the fuses as it is doubtful that all the bulbs have gone bad at once.