Re: HID/Xenon headlights replacement for 2017 Terrain
It's your vehicle It's your money.
I spent $$$ to change both the head (low & high beams) and the fog lights on my 2014 Terrain to HID. I run mostly unlit state and county roads in southern NJ.
No big difference.
Plus, due to a possibly flawed installation, I was forced to replace the left headlight assembly due to inside moisture. It is my opinion that once factory assemblies are modified - costly problems are invited.
FWIW, I decided to stay with the factory projector headlights on my 2017 Terrain Denali for the reasons outlined above.
Good luck no matter how you elect to proceed.
2017 GMC Terrain<br />V6 AWD<br /><br />"Faith Means Believing in Something When Common Sense Tells You Not to."<br /><br />Valentine Davies - - Miracle on 34th Street