Class Action Lawsuit Filed Over Allegedly Faulty GMC Yukon Taillights

A class-action lawsuit has been filed against General Motors by a plaintiff who says the taillights on their K2XX-platform GMC Yukon are faulty.

This lawsuit, which was first reported on by Car Complaints, was filed in the U.S. District Court for the Southern District of Florida by a plaintiff named Rhonda Small. The plaintiff claims the factory taillights in their K2XX-platform GMC Yukon have faulty LED light strips that may cause the brake and/or taillights to fail. These lights may also have a faulty connection inside the light assembly or a defective circuit board, which can lead to similar issues with the brake and taillights.

GM issued a Technical Service Bulletin (TSB) in November of 2019 for certain 2015-2016 model year GMC Yukon SUVs to address a problem with these vehicles’ taillights. The TSB, entitled “Tail Lamps Inoperative,” indicated the stop and tail functions inside the taillamps may experience various issues and instructed dealers “to replace tail lamps if they are found to be inoperative.” The class action lawsuit says later model year GMC Yukon vehicles should have been included in this TSB, which only involved 2015 and 2016 model year vehicles.

As noted by Car Complaints, the plaintiff says the problems with the taillights can be traced back to the “defective design of the alloy base circuit used to maintain continuity,” in the taillights of affected vehicles.

“The alloy’s inability to expand and contract due to the current design causes the Tail Lamp Assembly Defect, whereby the alloy breaks, interrupts the current from maintaining continuity, and results in failure when the circuit trace inside the housing cracks,” the lawsuit says. “The tail lamp assembly should have had expansion and contraction points to prevent premature failure.”

This lawsuit also says the taillights can experience similar issues if enough moisture is allowed to enter the light assembly. If this condition occurs, owners may also observe moisture or a clear white film forming on the inside of the taillight lense(s).

The plaintiff claims GM has actively tried to hide these defects and has left GMC Yukon owners on the hook for costly repairs. The filing also alleges this problem is so widespread that it has led to a backorder of replacement parts across the country.

We’ll provide an update on this class-action proceeding as it moves through the courts.

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Sam loves to write and has a passion for auto racing, karting and performance driving of all types.

Sam McEachern

Sam loves to write and has a passion for auto racing, karting and performance driving of all types.

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  • How much of a coincidence is this ? I just read this while waiting for my local GMC dealer to open this morning to consult with our usual sales-guy about trading our 2019 Acadia for a 2021 Yukon SLT but memories of the horrible experience we had with GM's shoddy treatment and lack of response to affected owners to the timing-chain stretching issues on our former 2009 Buick Enclave surfaced and I am not going to make that call. Will look elsewhere at another brand. Fed up with GM getting away with this crap on yet another well-known, widespread QC issue.

    • Haha, if this isn't a troll comment I don't know what is. So you aren't having issues with your current vehicle and want to upgrade to something larger, yet an article about a tail light brings up an issue from 12 years ago on a rogue issue from early adapters of an engine and you are going to look elsewhere? Haha, good luck bud, the grass isn't always greener. Maybe before announcing to the world your glorious exit you should take a look at the other brands and the issues they are having... GM is known to be more on the reliable side, not the flashiest but just flat out works with some quirks. I will take that any day over a Fiat truck with a fancy interior or an over heating engine from Ford that they just can't seem to build right yet.

      • That's pretty good calling the truth a troll comment, says either the current GM employee or stockholder or somehow involved with general motors, to admit other brands have just as many if not more problems is a statement you're dreaming about. I work for general motors for over 30 years, I've been driving them my entire life and I'm about ready to change brands. Think about it you go from being number one in the world almost to bankrupt the mistakes that were made then are still being made now in a different way and this is one of them.

  • I had a 2017 GMC Yukon denali xl, it had torque converter issuses I paid 550.00 to flush the transmissionat the dealer requestand was told this wouldfix the problem, it had taillight issuses, also 3 HMI modules and 1 dash harness all in a 2 year since purchase what a shame. And GMC would not replace the torque converter, the taillights they claimed were working fine, abd the HMI modules 1 under warranty the other 2 and dash harness went under my ext warranty, I sold the truck with 45,000 miles on it.

  • I’m hearing and reading about so many unhappy customers with gm product across the board and I wondering if should go to another brand being that I’m waiting to see and thinking of purchasing the new refresh 2022 Terrain denali but with so many changes and reading all the negative comments about gm just wondering I’m making a good decision can anyone who reads these comments give a future perspective gmc Custoner advice would be greatly appreciated !

    • Go look at the other brands, there will be just as many if not more issues and complaints, even with Toyota. Grass isn't always greener. GM tends to have some of the more reliable vehicles, though they may not have the fanciest interiors or most tech they are usually known to be more reliable outside of some rogue issues. Many of the complaints are just trolls or people that flip out if one thing doesn't go 100% right and they throw a fit and announce how they have had XXX amount of vehicles over XXX amount of years and are leaving because of one issue. Would love to hear a follow up with one of the other brands after they left...

  • As a matter of Fact . Last year My Stop Light went out
    Cost to Fix $750 each 😳 I finally Contacted my Dealership. They informed me they indeed had a Stoplight problem and extended the Warranty on my Vehicle. 🙏 I dropped it off finally when they called me to come in , they Changed Both Stop lights.🙏

    • What year was your vehicle? 2015 and 2016 - dealers were told to change them- it;s the same light in the 2017 and they won't replace gratis.

      • There is now a class action lawsuit... it is ridiculous and I personally think the miles should not matter, it went out at 40K miles, oh it works randomly...2017

  • It unbelievable, tge dealership wants $700 to repair it. My passenger side went out last year,now my driver's side is out. Thank God for Youtube. I hope thay have to pay out the butt.

  • Same issues with my 2017 GM Yukon XL, GM sent me an extension kinda warranty for my tail lights saying if I encounter problems with the break lights just send it to GM dealership and they will fix it. But then again my tail lights quits working after the dateline is over, now their asking $1600+tax+labor cost to replace them...I wouldn't trade my XL to a newer one...my dealership sucks too.

    • I’m so sorry about your lights going out . I’m wondering
      If there is a way to convert the LED - to a regular Bulbs.
      I do know some Chevrolet Tahoe’s have them , NOT LED. I’m still Researching this . If anyone knows how to do this please Advise . I was going to do this, but like I said GMC took care of my Light Problem .

      • There are some videos on Youtube that show how to make a repair to the LED brake/taillights on the 2015+ Yukon taillights. My left rear brake light went out and I followed the repair procedure in the Youtube video. Once I cut some access openings, I found the crack in the metal conductor that was keeping the brake light from working. I soldered a jumper in place and also put a jumper on the taillight conductor (a crack was also starting in it) just for good measure and now the light is working fine. The right rear is presently working fine but now I know what to do to fix it when it stops working.

  • When the right side brake light went out on my wife's 2016 Yukon, I figured it would be an easy fix. That's when I learned about LED lights...not just a double filament bulb. Over $1000 repair!!! Realizing I had a 2018 Sierra Denali and the Yukon with a total of eight corners of LED lights, I became concerned. I found there was a recall on the problem and my dealer came thru for me. If I have to pay for the repair in the future, I may have to just bolt on some boat trailer lights.

  • Don't have the dealer replace your LED Tailights if they won't do it for free, whether they want to call it warranty or extended warranty or GM approved adjustment. There are plenty of quality aftermarket tailight assemblies available for far less than GM charges for stock replacements. It's also pretty easy to change them yourself, or have a handy individual do it for you.

    • I have a 2015 GMC Yukon that had issues with both tail lights. I ordered the Cadillac style ones off of the internet for about $500 & installed them myself. All of this after I contacted GMC to see if there was a recall. Of course there was not & they wanted to charge me about $1000 to fix them.

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