As of yesterday, I have had to replace the passenger side low beam bulb on my 2011 Impala three times in the past eight months. That'* ridiculous. At least it'* a three-minute job to replace it. It'* only on the passenger side. The driver side bulb is the original from the factory, as the passenger side one was until January. Is this a wiring problem? Is there anything that can be done to lengthen the life of the bulbs? There has to be a fix.

What kind of replacement bulbs are you using?

When you install them, do you let your fingers touch the bulb?

Is the bulb solidly placed in the headlamp lens?

Do you notice any burnt marks in the connectors in the harness connector to the bulb?

I would also check the mounts for the headlight assembly on that side. Excessive vibrations to the headlights can cause repeated problems too.

I'm using Sylvania Basic bulbs. They're essentially OEM quality and I don't feel like shelling out for a premium bulb when it'* only going to last four months or so. That said, I did order a pair of German made Osram long life bulbs from Amazon last night for $12.99 shipped. Wish I'd spotted that deal before I bought yet another Sylvania basic for $15.99 at Advance Auto. I never touch the glass when installing the bulbs, only the black plastic base. I always make sure everything is solidly in place but I did notice this last time the plug felt loose when I pushed the bulb onto it. I guess it'* getting worn from having to replace the bulbs so often. That said, I didn't notice any burn marks or discoloration. As far as I can tell, the headlight assembly feels like it'* firmly in place.

Yeah what the guys said above. Also, I have a couple of friends that swear bad luck with Sylvania. I personally haven't though.

Perhaps in your case, if you can't find the issue you could look into converting to LED like seems to be all the rage today.

Oh yeah, I've tried those, too. I liked the concept because they're an array of several LEDs; but they turned out to be an epic fail, lasting all of a week before the little transformer box on one of them melted. Made of pure chinesium, what do you expect? That said, I did like the nice, bright light they put out, so that only added to my disappointment and frustration.

Forgot to mention......swap bulbs side to side and see what happens....

I actually did that earlier this week when I removed those cheap-*** LEDs. I put the surviving halogen bulb that had come from the factory on the driver'* side back into the passenger side and put the new Sylvania bulb into the driver'* side. Ironically, the LED that failed was installed on the driver'* side.

I was thinking left/right swap on the way to work today, then forgot to say anything. Curious how that comes out.

Last night, I pulled into the driveway and saw only one headlight reflected back at me. The driver'* side was out, which is where I put the new Sylvania bulb a month ago. I was initially irritated that the bulb had only lasted four weeks, but then when I went to go to work this morning, both sides were lit up again. I began to question whether it was a DRL vs. regular low beam thing but the driver'* side stayed on when I manually turned the headlights on. At this point, I'm not sure what to think, although I do know the previous bulbs actually did burn out because in each case, I could see the broken filament inside.