Question about 2002 Chevrolet Impala

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Turn signals work fine one minute and then they stop. I can pull over to the side and turn car off and then on and it works fine or if I tap the hazard light switch they start to work. What is the problem.

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The turn signals and hazard lights are controlled by the hazard switch, which is the button you push to engage your 4 way flashers. The electronics in the switch corrode over time and the result is an intermittant, no turn signal/no hazard light problem. Under most circumstances, replacing that switch eliminates the problem. There is another possbility, rare, but possible. That is, there is a problem with the BCM and/ or the ignition switch as some of the electronics run through the ignition switch. Usually if the switch is at fault, you will get a no-start condition WITHOUT the passlock security light, and possibly a random re-set of the cluster gages similar to what you see when first starting your vehicle. Have this checked by a qualified mechanic before spending money on a new ignition switch!

Posted on Jul 11, 2010

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