Question about 1999 Pontiac Bonneville

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Turn Signal problem

Turn Signal arrow stays on but does not blink. Bulbs are not burned out.

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If lights stay on and bulbs are all good. then the flasher is usally to blame. replace signal fasher.

Posted on Sep 26, 2009


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Two things I'd look at there...First, though it does not often happen, I'd check all turn signal bulbs to make sure that one of the filaments have not burned and re-connected themselves to the adjacent one inside the bulb. Second, you will need to do a visual check of the switch itself, to make sure the internal contacts have not melted and are not shorting to each other. Only other quick test is to remove the four way flasher and plug it in where the one for the turn signals is. If the one for the signals is burned, it possibly could do that as well. (both flashers are the same) On an 89, there aren't any "modules" so it's a fairly simple system that should not be difficult to diagnose.
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Dont have signal

Click the turn signal switch to either the right or left and get out and check if the BULB comes on but doesn't blink. Try both directions. Does the arrow for that direction also come on, on the dashboard instruments and stays on but not blink? That is a built in indicator that a filament has burned out in one of the bulbs. Try replacing the bulbs. Could also be the fuse for that circuit. Check fuse panel for that circuit. Could also be the turn signal relay. Replace with newer style relay.

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