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I've got a 2008 Enclave with HID headlights. When I turn on the hi beams only the passenger side comes on. I replaced the turn signal/wiper/hi beam switch on the recommendation of a friend but it didn't fix my problem. Is this a ballast/bulb issue?
 

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If the driver's side HID bulb comes on in the low beam setting only, the problem is the shutter that shifts to expose the hi beam portion of the bulb's projection. If the bulb is off in both the low and hi beam settings, the bulb is likely burnt out.
 

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Yes, driver side is low beam only. Is this something that can be replaced? What's the fix for this? Thanks for the info!
 

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Sounds like a stuck flap on the projector lamp reflector, you might need a new assembly. The projector headlights were invented by BMW, using reflective lights through dome-like lens to project forward. It maintains low beam by using a semi-circular flap to block the light to the top half of the projected path. Sounds like the flaps not working properly.
 

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Wow I didn't even know that was how they worked. I just thought they shifted up for high beams, physically moved. I have tried this in the garage and have heard a motor like sound, but have never watched the lights. Since they jiggle some when going over bumps while driving, I just assumed it's because they move when the high beams come on, so they are not as tight as conventional lights. Can someone else chime in and shed some light (pardon the pun) on this subject? At any rate, these bulbs are expensive, sorry to hear you may be replacing one. (btw, all Enclaves came with HID lights)
 

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Did you check the Left High Beam Fuse? If it's blown then this shutter won't activate as far as I know.
 

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Discussion Starter #7
Just checked the fuse and its good. Looks like I'm replacing a new headlight assembly. Thanks for all the info!
 

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kidsenclave said:
Wow I didn't even know that was how they worked. I just thought they shifted up for high beams, physically moved. I have tried this in the garage and have heard a motor like sound, but have never watched the lights. Since they jiggle some when going over bumps while driving, I just assumed it's because they move when the high beams come on, so they are not as tight as conventional lights. Can someone else chime in and shed some light (pardon the pun) on this subject? At any rate, these bulbs are expensive, sorry to hear you may be replacing one. (btw, all Enclaves came with HID lights)
I have read of numerous reports about the Enclave's "jiggling" headlamp beams when driving over potholes and such, but I have never noticed this phenomenon. I had paid attention to the projection beam on a few occasions after past discussion on this matter, but the beam seemed steady as a rock. :shrug:
 

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Can we get an update on this OP? Mine is doing the same and before I shell out $600 plus for an entire assembly, I'd like to see if its a repairable part.
 
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