Can you still buy the front headlight panel

adjustment is on the top of the light and the side.

Is it the rubber trim that surrounds the headlight assembly? There is a flexible piece of black rubbery trim that reduces wind noise and helps to keep water and stuff out. Although this piece can be seperated from the headlight, I've never seen it sold seperately.

Call a Buick dealer and ask the parts department about that item.

If you need to buy an entire headlight, you can find them remarkably cheap, brand new, for under $40 each (including the bulbs!). Try looking on Amazon.com or Google Shopping for "2002 Grand Am headlight".

Good luck from Detroit, MI.

believe its called a bezel.get one at a salvage yard or at the dealer

The headlight is a two piece unit, usually glass in the front with a plastic backing. It's sealed where the two pieces join together but that joint may eventually leak, allowing some water into the housing. You will have to remove the entire headlight housing from the vehicle if you want to reseal it properly, all around. On a lighter note, a little moisture in the headlight housing will not affect anything, if it doesn't burn out your headlight bulb.

you might be able to find one at a salvage yard but you should be able to purchase that piece on it's own at the dealership.

The best way to do it is to park your car in front on a garage door, a building or put a piece of plywood in front. Whichever you use, park you car at least 10 feet away; so you can tell if you are going up, down or in the middle when adjusting.

1. Remove the four screws that secure the headlight trim bezel to the grille.
   
2. Remove the headlight trim bezel.
   
3. Turn the headlight high beams on.
   
4. Adjust the headlights. Use the adjustment screws located along the outboard side and the inboard lower corner of the headlight bucket. Adjust the headlights until the beams are centered directly on the wall.
   
5. Replace the headlight trim bezel.
   

I'm not entirely sure of what you mean as the casing...However: the headlight is a one piece unit (front clear cover, and back/mount). The bulbs are usually sold separately if purchased new. A used parts yard usually sells the headlight assembly as one piece, bulbs included. It can simply be bolted back in and the bulbs plugged back in.

REMOVAL & INSTALLATION 1984–88 Vehicles

1. Open the hood, then turn the headlights on.
2. Detach the headlight motor wire on the outer side of the headlight.
3. Turn the headlights off (the disconnected light should stay open).
4. Unfasten the 4 screws at the bezel. There are 2 at the front and 2 at the sides. Fig. 1: With the hood in the raised position, unfasten the Torx® screws from the outer side of the headlight bezel/trim piece
   Fig. 2: You must then remove the screws from the inner side of the bezel/trim piece
   
   
5. Remove the bezel. Fig. 3: Remove the first of the top bezel/retaining ring screws . . .
   Fig. 4: . . . then remove the remaining Torx® screw
   Fig. 5: Lift the bezel/trim piece away from the headlight assembly
   
   
6. Remove the retaining spring by carefully using a hooked end tool, such as a cotter pin removal tool to move it to the side.
7. Remove the headlight from the aiming pins by rotating the headlight toward the center of the car.
8. Unfasten the 4 retaining ring screws, then remove the ring. Fig. 6: With the hood closed, you can see the 4 headlight retaining ring screws (1) and 2 aiming screws (2)
   Fig. 7: Remove ONLY the 4 retaining ring screws, do NOT touch the aiming screws
   
   
9. Remove the headlight pump from the mounting bracket, unplugging the socket as you pull it away. Fig. 8: Remove the headlight away from the mounting bracket, unplugging the socket as you pull it away
   To install:
   
10. Install the headlight bulb, making sure it is plugged in properly.
11. Position the retaining ring and secure with the 4 screws.
12. Position the headlight into the aiming pins. Move the retaining spring back into place.
13. Install the bezel and secure with the retainers.
14. Turn the headlights on, then connect the headlight motor wire.
15. Turn the headlights off. Both should lower.
16. Close the hood. Check the aim of the headlights, and adjust if necessary.

1989–96 Vehicles

1. Open the hood.
2. Open the headlight door halfway. This can be done either by turning the headlight switch on, then back to the parking lamp on position, or by the manual headlamp control knob (which is located on the inboard side of the headlight door). NOTE: Before removing the screws from the side of the headlight bezel, place your hand under the bezel to support and prevent damage to it.
   
3. Remove the screws from the front of the headlight bezel. NOTE: Before removing the screws from the side of the headlight bezel, place your hand under the bezel to support and prevent damage to it.
   
4. Remove the Phillips head screws from each side of the headlight bezel.
5. Remove the bezel by pulling it straight out from the engine side of the hood. Fig. 9: View of the headlight bezel mounting
   
   
6. Unfasten the screws from the headlight retaining ring.
7. Remove the headlamp from the assembly, unplugging the electrical connector as you are pulling it away. Fig. 10: Exploded view of the headlight assembly
   Fig. 11: Location of the headlight mounting and aiming screws
   To install:
   
8. Attach the headlight electrical connector.
9. Position the retaining ring and install the screws securing the ring to the headlight.
10. Position the bezel in place on the headlight assembly.
11. Install the screws on each side of the bezel and tighten to 51 inch lbs. (5.8 Nm).
12. Install the screws on the front of the bezel and tighten to 17 inch lbs. (1.9 Nm).
13. Cycle the headlamps, then close the hood. Check the headlight aim, and adjust if necessary.

I would suggest going to a junkyard -- that's the best place to get pieces of assemblies without paying a fortune.

I have read that the only way is to remove the plastic bumper. I hate my Lucerne...piece of junk.