Headlamp

1. Remove headlamp fasteners (1,2) securing the headlamp to the vehicle.

2. Using a pry bar, carefully pry in the center area of the headlamp.

3. Pry the headlamp assembly straight forward in order to unsnap the headlamp ball stud (3) from its ball stud socket.

4. Slide the headlamp (4) straight forward and disconnect the headlamp connector from the forward lamp wiring harness.

5. Remove the headlamp from the vehicle.

Installation is the reverse of removal.

https://www.2carpros.com/articles/how-to-replace-a-headlight-bulb

how do you take out the low beam bulb,and replace??

Remove the headlight bezel retaining clips (Pull up). Remove the bezel. If necessary, disconnect the turn signal lamp wires.
Remove the retaining ring screws from one or both lights.
Remove the retaining rings.
Remove the light from the housing. Disconnect the wiring connector from the back of the light.
Push the wiring connector onto the prongs at the rear of the new light.
Place the new light in the headlight housing. Position it so the embossed number in the light lens is on the top.
Place the retaining ring over the light and install the retaining ring screws. Tighten them slightly.
Check the aim of the headlight and adjust it, if necessary.
Install the headlight bezel. Secure it with the retaining screws.
Connect the turn signal lamp wiring (if it was disconnected).

no low beam for a 1999 aurora

Check and test the dimmer switch, fog lamps fuses if all okay the problem is coming from the lamp control module