• The headlights of more than 725,000 2010-2017 GMC Terrain SUVs are apparently too bright, although to date there is no evidence that anyone has reported safety issues as a result.
• In 2019, GM asked the National Highway Traffic Safety Administration (NHTSA) to dismiss the issue because, aside from the lack of crashes, only one customer had even asked about the situation.
• Even so, since these headlights are noticeably too bright in some cases, NHTSA refused GM’s request this week, putting the ball in GM’s court to figure out how to resolve the situation.

General Motors will have to recall more than 725,000 GMC Terrains to fix an issue with SUV headlights. The National Highway Traffic Safety Administration (NHTSA) has collected information on 2010-2017 model year GMC Terrains and says the headlights can create “glare to other motorists driving nearby” in certain weather conditions, including snow. and fog.

In a Refusal of petition In a document published Thursday in the Federal Register, NHTSA said the headlights at the affected lands are just too bright from some vantage points. Specifically, the reflection from the headlight housing illuminates two small areas above the vehicle which, when measured according to Federal Motor Vehicle Safety Standards, return a result of approximately 450 to 470 candela. That’s more than three times brighter than what’s allowed at those measurement points, NHTSA said.

In 2019, the automaker asked NHTSA to consider an exemption for the Terrain headlight problem because “the reflection has no effect on vehicle safety for oncoming or surrounding vehicles”. He also said headlight supplier Stanley redesigned the replacement headlights with grain on the surfaces that inadvertently reflected too bright light, “which will prevent the glare that is causing the problem.” GM also said it had not heard of “a single customer inquiry associated with this condition and was unaware of any accidents or injuries”, with that customer complaining that “the left headlight appears to have a part of the light that shines in the trees at an angle close to 45 degrees.” That’s all.

Still, NHTSA denied GM’s request on Friday, and the decision now requires GM to recall the vehicles and repair the headlights at no cost to vehicle owners. NHTSA has stated that approximately 726,959 Terrains manufactured between May 21, 2009 and July 13, 2017 are potentially affected by this recall.

gm said Reuters that some Terrains have received headlight replacements that do not cause the same type of glare and the issue has been resolved for model year 2018 and later Terrains. The automaker said it would now “review NHTSA’s decision and explore potential next steps,” Reuters reported.

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