Brake Light Problems of GMC Sierra 1500

GMC Sierra 1500 owners have reported 3 problems related to brake light (under the exterior lighting category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Sierra 1500 based on all problems reported for the Sierra 1500.

1 Brake Light problem of the 2019 GMC Sierra 1500

Failure Date: 06/17/2024

The contact owned a 2019 GMC Sierra 1500. The contact stated that while driving 25 mph, there was an abnormal sound coming from the rear of the vehicle before the vehicle jerked forward. There was no warning light illuminated. The contact was able to pull over on the side of the road. The contact also stated that the radio would turn on, but there was no image on the screen. The contact took the vehicle to the dealer; however, no cause for the failure was found. The vehicle was not diagnosed nor repaired. The manufacturer was made aware of the failure and informed the contact that the vehicle was no longer covered under an undisclosed customer satisfaction program. The contact stated that the abnormal sounds and failure persisted, and the manufacturer was contacted again. The vehicle was taken to the dealer and was diagnosed with a misfire and that the brake lights needed to be replaced. The vehicle was not repaired. The failure mileage was approximately 42,000.

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2 Brake Light problem of the 2015 GMC Sierra 1500

Failure Date: 12/01/2020

The 3rd brake light allowed rain to enter the cab of truck. (gasket failed) headliner, carpet on floor, insulation all ruined. Diagnosed by a "water doctor" at the dealer where truck was purchased. The floor on the passenger front was soaked, headliner is stained. I removed all seats, carpet, insulation and the smell is still there. Called GMC to try to get assistance on repairs. Truck is out of factory warranty. GMC offered $585 leaving a balance of $1300 to be paid by me to replace the headliner. How is it that the 3rd brake light allows rain to enter the cab of the vehicle. Itemized estimate from dealer to replace and put truck back together is $4500-$5000. Money that I don't have. This is a poor design. Did not know/realize that a gasket would fail and allow water to leak inside. The truck is parked in our driveway or on the street. I do not have a garage. I started taking the seats and carpet out the last week of December 2020. Over the next few weeks insulation was removed. The moldy/musty smell remains. GMC was contacted approximately the last of January or the first week of February 2021. I am still in talks with them. Aaron, case manager at GMC with whom I have been dealing. He is trying to figure out someway to give me assistance in getting my truck back together. I don't know how long it has been leaking before I started smelling the musty odor.

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3 Brake Light problem of the 2016 GMC Sierra 1500

Failure Date: 12/10/2018

Failed seal on 3rd brake light resulting in complete replacement of brake light required due to water infiltration. Happened in car wash after owning 2yrs 8 months.

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Other Common Exterior Lighting related problems of GMC Sierra 1500



Safety Ratings of Sierra 1500 Cars
Sierra 1500 Service Bulletins
Sierra 1500 Safety Recalls
Sierra 1500 Defect Investigations