I have a 2004 Impala and on a recent road trip I noticed the turn signals do not flash when I turn them on. I did some testing and here is the additional info:
1. None of the bulbs are burnt out.
2. When I switch on the hazards they do not flash either but just stay on constant.
3. I have checked both turn signal and hazard fuse and neither are blown.
4. The not flashing affects both left and right turn signals.
I suspect the flasher is the culprit so I called the dealer to find out if a warranty or anything would cover it. The dealer told me that there is a separate flasher for the hazard lights and for the turn signal and thought it was strange that both went out. He said to bring it in for a diagnostic test for the tune of $35-$65.
Anyone else have a different take? I plan on calling another dealership to get a second opinion.