Tail lights or brake lights fail

What got replaced

Owners who name the part that was replaced mention the LED module (61 reports), the tail light assembly (29 reports) and the bulb (13 reports).

Recalls and investigations

No recall on the exterior lighting covers the 2015 model year as of Sep 19, 2026.

What owners paid

52 of the 122 reports quote a price. Each dot is one quote. The middle half runs $700 to $1,000.

When it happens

The middle half of failures fell between 53,000 and 85,000 miles, from the 92 reports that gave a mileage.

What owners wrote

“The brake lights intermittently come on and off. Not reliable and the entire assembly has to be replaced per light in order to work. Sometimes if you hit a bump it will work for a bit then go back out. They have been removed, cleaned, but there is no way to fix them without replacing them. This is a known problem with GMC and they will not warranty or recall this issue.”

Filed Jul 8, 2023

“This is a common issue that is not being resolved by GM. First one, now BOTH of my rear tail lights are malfunctioning due to manufacturing defects. This is a well publicized problem and I feel that GM should be responsible for continuing to ignore the issue. Replacement tail lights are approximately $750 each. There are many businesses that have sprung up solely to repair these tail lights.”

Filed Jun 17, 2023

“Tail lights are very inconsistent of working or not working. Sometimes they work but most times they don't.”

Filed Jun 15, 2023

“Tail light failure with no ability to change out bulb. Entire assembly must be changed which costs nearly $1000.”

Filed Aug 10, 2022

Other problems on this car

• Brakes grind, pulse or wear early 64 reports