2019 GMC SIERRA 1500 Complaints

I was driving my vehicle on the highway doing normal highway speed, when I began to hear an odd noise coming from the engine area. I slowed down and moved into the slow lane at which time the noise became worse. The vehicle then lost power and I wasn’t able to get the vehicle to do over 40mph. I was able to exit the highway and limp my vehicle home. I had the vehicle towed to a GMC dealership the following morning. After about ten days, I was contacted by the dealer and was advised that I had an engine failure and that my vehicle required a new engine.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while stopped, there was an abnormally loud sound coming from the vehicle. The vehicle was consuming an excessive amount of engine oil. The engine and transmission warning lights were illuminated. The vehicle was initially taken to the local dealer; however, the dealer was unable to determine the cause of the failure. The vehicle was later diagnosed, and it was determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the issue and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 106,000.

The contact's partner owns a 2019 GMC Sierra 1500. The contact stated that upon starting the vehicle, the "Service Brake System" and ABS warning lights illuminated. The brake pedal was depressed to the floorboard, and the message that the vehicle would not exceed 62 MPH was displayed. The vehicle was restarted, and several unknown warning lights were illuminated with a message that the vehicle would not accelerate above 42 MPH. The vehicle was taken to a dealer, where a diagnostic test was performed and the diagnostic test revealed that the brake pipe had seized in the brake master cylinder and that the pipe fitting threads were damaged. The contact was informed that the brake master cylinder and the reservoir seal needed to be replaced. Despite the repair, the dealer stated that the master cylinder and brake line fitting were still defective. After several additional repairs to the brake system, the vehicle was returned to the owner. Upon driving the vehicle, the contact stated that the prior brake warning lights returned on the instrument panel. The vehicle was returned to the dealer and remained with the dealer. Upon investigation, the contact discovered NHTSA Campaign Number: 20V055000 (Service Brakes, Hydraulic); and associated the failure with the recall. The manufacturer was notified of the failure, and the contact was informed that the vehicle was not included in the recall. The contact was then given a case number. The contact was also transferred to the NHTSA Hotline to report the failure. The vehicle was not repaired. The failure mileage was 42,320.

My vehicle is at the dealership now - it wasn’t starting properly, started always getting low on oil which I took to the dealership for them to monitor- and then the check engine light came on- once that came on just last Thursday I did not drive the vehicle except to the dealership to be inspected - which my appt was Monday and they found metal shavings in the oil and said the whole engine needs replacement!

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle lost automotive power; however, the vehicle maintained electrical power. The check engine warning light was illuminated. The vehicle was towed to a local service center, where it was diagnosed and determined that the battery needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the same local dealer and remained for additional investigation. The contact attempted to restart the vehicle several times and shift into different gears; however, the failure reoccurred. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 103,000.

Engine knocking, constantly kicking into limp mode, shaking when driving. Taken to GMC and local repair shops. Limp mode will not stop kicking on. Now other issues will mean total engine replacement needed. Mechanic says it’s not worth repairing at this point. Only 109k miles on it.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle vibrated and felt as if the transmission was going to unexpectedly downshift. No warning light was illuminated. In addition, there was an abnormal sound coming from the rear wheels. The contact stated that it felt like the rear tires were driving in the wrong gear. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The contact stated that the failure persisted and became a worsening failure. The manufacturer was not notified of the failure. The failure mileage was approximately 75,000.

THE PARK ASSIST WOULD GO ON WHEN I WAS AT A STOP LIGHT AND NO ONE WAS IN FRONT OF ME AND AUTO STOP WAS OFF ALL THE TIME. TWO GROUND STRAPS WERE CORRODED. THERE IS A RECALL ON THEM FROM 2019 TO 2024. MY TRUCK DID NOT HAVE A RECALL ON IT. I JUST WANT TO LET YOU KNOW AND MAYBE IF ENOUGH PEOPLE COMPLAIN, YOU WILL PUT ALL TRUCKS ON THE RECALL.

The transmission valve body was trying to lock up while driving and making it shimmy and shift hard. I took it to Davis GMC in [XXX] . They diagnosed it with the transmission malfunction (this is the same transmission that is under recall in the 2020 models)j. I paid $8660.33 to have them replace the transmission. It has been approximately 6 months and 6.000 miles and now this transmission is shuttering, also. I took it back to Davis GMC and the technician told me that I didn't know how to drive a 10 speed automatic! I then took it to TriLakes Motor in [XXX] where they made an adjustment on it. That has not fixed the problem. Today I contacted the main GMC center and started a case number: XXX. They suggessted taking it back to a dealership again and trying to get it fixed again. I feel like I am stuck with a truck that can not be fixed and should be in the recall due to it having the same transmission as the other GMC Sierra's that are under recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My Truck Was 123369 Milles Was Driving And Stop At My Work Turn Off The Vehicle and After That Re-Start The Vehicle And The Vehicle Not Start The Check Engine Light Coming on Im Tow The Tuck To The Dealer Were I Do All My Service They Check The Truck After A Mont And They Told Me The Engine Timing Off Due To Camshaft Gear Spun On Camshaf Which Sheared Locator Pin Valve Timing Off So That Enging Does Not Build Compression In Any Cylinder Recommende Enging Replacement Due To Nature Of Failure-Extensive Mechanical Damge Internaly To The Camshatf And The Warranty Was Over