If a signal light stays on, but does not flash on a 1989 Pontiac, there could be a light burned out in the turn signals on the exterior of the vehicle. It is also possible that the flasher unit has gone bad. The flasher unit is under the dash on the driver's side.
On some cars the bulbs screw in from the rear and you have to take the light assy off to get to it.
pictures of how to change front signal bulbs on a 2004 grand prix pontiac
There's a turn signal or running light out on that side, either front or rear. Turn on signal, get out and look. If both turn signals are working, chances are its the running light.
On some, you can get to the back of the light assy and take the bulbs out. If not, the assy has to come off
u will need a odb1 scanner,
my brake light stay on but emergency brake is unhooked
'How do you change a fog light in a 1996 Pontiac Bonneville? ... How do you
underneith the front bumber twist counter clockwise replace bulb
CHECK GUAGE LIGHT COME ON
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The easiest way is to bring it to a chevy dealer, because the two were companion brands.