Fast Blinking Left Signal?

[Vetts]

I have a 2007 Sierra (new body style) and the left turn signal sounds like it's rapidly blinking but none of the left bulbs are actually lighting up. I know this happens when one of the bulbs are burnt out, but they all look fine. Also when I lock/unlock the doors with the keyfob, only the right side blinks. Is there a turn signal flasher that can be replaced? Is it something I can fix or do I have to take it to GM to get them to reset something?

[old-chevy-dude]

There is no flasher relay, flashing is controlled by the bcm. So either you have a bulb burned out or a loose wire, or a disconnected connector.

 

The rear turn signal is fed off the front connector at the front lamp so I would start there because if that connector is loose, diconnected, or has a broken wire then the rear won't flash either.

[Vetts]

Well I feel stupid. Before I posted, I checked the fuse panel under the hood and the left turn signal fuse was fine. Little did I know, there is another panel on the left side of driver's dash. There is another 15A mini fuse for the left turn signal under there. It was blown. Crisis averted. Thanks, Old-chevy-dude anyway!