How do i install a new front turn signal bulb on my 2000 pontiac montana

try changing the signal flasher. note the e-flasher looks the same. when you find a flasher turn on the e-flasher so you know you have found the signal flasher. they are usually in the same general area.

there shoild be a pull out panel under the dash pull it out to check the fuses there should be a diagram of the fuse location on the back of the panel

Open the hood. If you cannot gain access, the grill of the vehical will have to be removed. This will give you access to the bulb.

1. Open the hood.

2. Remove the front turn signal/parking lamp
assembly. See Front Turn Signal, Sidemarker and
Parking Lamps on page 5-46.

3. Pull the assembly away from the vehicle.

4. Unscrew the black retainer ring that holds the bulb
assembly in place.

5. Pull the bulb assembly straight up from the
lamp housing.

6. Unhook the electrical connector by lifting up the
blue tabs and pulling the bulb out.

7. Install the new bulb through the black retainer ring
and into the electrical connector.

8. Tighten the black retainer ring in place. Push the
bulb firmly enough so that the blue tabs hook over
the tab on the bulb.

9. Carefully put the bulb assembly back into the lamp
housing. Be careful not to damage the bulb on the
headlamp aiming bar.


Same guide is here in the manual along with pictures.

http://www.extendedgmwarranty.com/owners-manual/pontiac/2005-Pontiac-Montana.pdf

On page 370

Need to replace the bulb. There are 2 filaments in the bulb. 1 works parking light the other is turn signal. It flashes fast to alert you that it has a blown out bulb.

I replaced the front right turn signal on my 2005 Pontiac Montana by reaching up from underneath. I tried removing the battery but the opening from above was too small. I was able to pull the ground effects open enough to get my arm in. When you reach the bulb holder feel for two wings on the bulb socket and give the whole socket a quarter turn to and it will release. The wires are long enough so the entire bulb holder will drop down below the vehicle so you can easily replace the bulb.
Reverse the step to put it back in. You will not be able to see what you are doing so I had someone guide me by watching from above. Took less than 10 minutes once I decided to change the bulb from the bottom. I did not need to jack the vehicle up or use ramps.

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.

If you live in a area in which salt is used on the roads, you probably have a corroded ground connection. These can be tough to find since there are several grounding points in most vehicles. When a ground fails, the current (the applied 12V) will find its own path to ground and can pass through different light bulbs on the way. If it was only the signal flasher creating problems, this can be caused by a single failed light bulb; the flashers are thermal devices and when the current is lower than it should be, the rapid flashing alerts you to the failure.
You might consider buying an after-market service manual from Haynes (my first choice) or Chilton. The manuals I have for our various vehicles give a general location for the grounding points; for example, 'Right side engine'

If one of the filaments in the bulbs is burned out, the remaining working lights will flash alot quicker.
Check the bulbs, and replace if the filaments are broken.
If the front bulb has a carbon build up it blown out...change it..
Once the bulbs are replaced your signals should work properly.

the boards in the tail lights have issues the plugs melt and they screw up the grounds. if your dash light signal indicators or on steady at night then chances are you will need new harnesses and light board assemblies