NHTSA Complaint #11475092 — 2015 GMC SIERRA 1500

Purchased GMC Sierra C1500 new in 2015 from a dealership in Orange County, CA. Experienced multiple issues over the past 4 years with the "Trailer Brake System" Service light and loud beeping which has created multiple safety issues making the vehicle undrivable at times. The last incident was while on a cross country road trip through extreme heat in the Southwest from Texas to California in June and most recently while visiting Orange County. The beeping noise almost caused a couple of accidents as the hands free phone system was inoperable due to the loud warning beeping noise as it went on and off about 50 times. We were required to take several risky maneuvers to pull the vehicle off heavy highway traffic at high speeds to stop the engine and restart in an attempt to reset the warning beeping system without success. The truck was checked in for service on 07.20.2022 at Tustin Buick GMC. Mr. John Boozer, Service Advisor. 714.669.3699. The total cost of repairs is $465 plus car rental of $80. Additional costs in April of 2019 for the repairs included fuse replacement, check of wiring harness and attempt to stop the beeping noise was $150. The defective wiring harness originally installed by GMC when the truck was built will be preserved and is available should your agency request it. Total costs out of pocket to replace or fix this factory defective part is $695. GMC has made no effort to address this issue or offer any recall notices related the failure of the "Trailer Brake Warning System". Thank you for your attention to this matter.