you can buy the lights alone, you do not have to buy the whole mirror. I am having this issue with my passenger side mirror as well. Both turn signal and puddle lamps are out. DO NOT buy them from the dealership they are WAY over priced. You can get quality ones from eBay and they are just fine.
Alos, FYI, any forum members that need parts such as mirrors, tailgates, headlight assemblies, etc., message me. I own a body shop and can get these items for much cheaper than the dealership will sell them to you for. For instance; the dealership wanted $600 for my driver side mirror, I got one from my supplier for $275.00. All forum members will also receive a discount for any paint services performed at my shop. www.2wheelzcustoms.com
. We do simple paint jobs and touch ups as well as the custom work you will see on my site. We've replaced rusted out rocker panels, rusted out fenders/wheel wells, bumpers, grills, etc.