Fog/driving light bulb replace

Remove wheels. Remove fender liners front. Remove three nuts per side from inside fender wells. Remove fog lamp grilles. Remove vertical bolt just inside grilles--pointing up. Remove two screws per side under hood near front of fender. Put milk crate under front bumper. Remove belly pan first. Slide bumper forward onto milk crate, disconnect headlight washer line at quick disconnect if so equipped. Disconnect fog light connectors. Remove bumper.

what are the ways u tried....
open the bonnet, nw u can find an access to the front right lighting assembly.... u can change the bulb nw 

reply back

Remove the fog light assembly housing from the fender, disconnect the wires from the bulbs and replace and put back together.

RAISE FRONT END OF VECHICLE.FROM BEHIND THE GRILLE AREA.GRASP THE BACK OF THE FOG LIGHT HOUSING AND TWIST IT COUNTER CLOCKWISE.PULL THE BLACK PLASTIC HOUSING AWAY FROM THE FOG LIGHT UNTIL YOU HAVE ACCESS TO THE METAL CLIP SECURRING THE BULBHOLDER.THEN REMOVE BULB INSTALL THE NEW BULB.PUT EVERYTHING BACK VISA VERSA.

headlight bulb or assembly? remove the fender splash shield lower retaining screw. Push the fender splah shield to inside. Remove the headlamp assembly lower retaning bolt. Remove the grille. Remove the head lamp assembly

Fog/Driving Light Bulb Size: 880
Here is the rest of the bulb size used in your Montana.
2000 Pontiac Montana Auto Light Bulb Diagram
Low Beam Headlight Bulb Size: 9004
High Beam Headlamp Light Bulb Size: 9004
Parking Light Bulb Size: 4157NALL
Front Turn Signal Light Bulb Size: 4157NALL
Rear Turn Signal Light Bulb Size: 3156
Tail Light Bulb Size: 3057
Stop Light Bulb Size: 3057
High Mount Stop Light Bulb Size: Assembly
Fog/Driving Light Bulb Size: 880
License Plate Light Bulb Size: 168
Back Up Light Bulb Size: 3156
Front Sidemarker Light Bulb Size: 194
Ash Tray Light Bulb Size: 558
Glove Box Light Bulb Size: 194
Map Light Bulb Size: 168
Dome Light Bulb Size: 562
Step/Courtesy Light Bulb Size: 168
Trunk/Cargo Area Light Bulb Size: 212-2
Daytime Running Light Bulb Size: 3157NALL
Thank you for using fixya.

Remove the 7mm hex head screw on fender holding headlight assembly. Remove retaining clip on grill side. Reach down, twist fog light bulb to remove, unplug connector to bulb. Reverse order to reassemble. You're done. 5 minute.

Open the engine hood and you'll see there is a plastic housing holding the head light ans side light to the frame. There are two wing nuts and one wing bolt holding it all together. Remove those and pull the headlight and side light housings out from the frame. You'll be able to access all of the lights now.

the fog light is normally one complete assembly that you just unplug from the outside and replace with a new one auto zone is a good place to help with this

You will have to remove the skirting around the front fenderwell of the tire (just a couple of screws really), enough to be able to get you hand to the back of the fog light socket and undo the light.