If you are talking about the models that are previous of the ones with the signal bulbs implemented in the side mirrors it's an easy job. Otherwise I don't know.
So you need to push the side turn signal unit to the front of the car (push the unit from it's back side - the one to the back of the car), and after that pull it out. You can do this with a screwdriver with a covered edge. Just stick something on the edge of the screwdriver, so that you don't scratch anything in the process.
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no. 33
First remove the plastic cover at the fixed end, this will allow you to lift the wiper arm up and you can then unclip
http://wiki.answers.com/Q/How_do_you_replace_the_offside_headlight_bulb_located_on_a_2004_Toyota_avensis"
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If you mean a turn signal, its on the lever on the left side of the steering wheel, just as it is on ANY car.
the flasher? open the steering wheel
Under the dash. I don't know otherwise.
take it to the dealership...
pictures of how to change front signal bulbs on a 2004 grand prix pontiac