2015 GMC YUKON XL Complaints

The contact owns a 2015 GMC Yukon XL. The contact stated that while his wife was driving approximately 35 MPH, there was an abnormal sound coming from the engine compartment before the vehicle stalled. The driver was able to steer the vehicle into a parking lot. The contact stated that his wife attempted to restart the vehicle; however, the vehicle failed to restart. The contact stated that his wife observed that the check engine warning light illuminated while attempting to restart the vehicle. The contact had the vehicle towed to a local dealer, where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The contact stated that prior to the engine failure, the vehicle had been towed to the same dealer for a failure to start. The contact stated that the starter motor and a 12-Volt battery were replaced. The vehicle was repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 127,000.

As I was driving on the highway the check engine lights pops on and the engine starts stalling. The stability track light also came on and the truck was hard to maintain and drive. The truck has been maintained and serviced on a meticulous schedule. This is not the first major problem we have experienced with the truck, we had to do a full transmission replacement on the truck at an 118,000 miles mark. Me and my family have been the only drivers and owner of the vehicle and mostly on put highway miles. I am so frustrated and disappointed in the workmanship and quality of our vehicle.

Lifter failure due to AFM. Car shuttered suddenly and then threw codes and had a bad misfire with engine shaking. Spent $6,700 to rebuild.

While traveling at highway speed, without warning, check engine light started flashing. Pulled off the highway at the next exit and vehicle died in the middle of the road. Towed vehicle to mechanic who inspected vehicle and found no compression (zero psi) on cylinder 1 indicating a major engine failure, rendering engine unrepairable and the vehicle worthless. Either cam, lifter, piston failure in cylinder 1 causing massive engine failure and making the engine unrepairable due to metal shavings in the engine. This is the L87 engine, 6.2L V8 that has been plagued by problems by millions of GM owners. This car had been meticulously serviced and maintained with regularly scheduled full synthetic oil changes. The car have no indication of engine problems beforehand until the engine blew up at highway speeds.

The contact owns a 2015 GMC Yukon XL. The contact stated that while operating the vehicle, the odor of fuel was present inside the cabin of the vehicle. The vehicle was taken to the local NAPA Auto store which diagnosed that the fuel feeder line was faulty and needed to be replaced. The fuel feeder line was replaced but the odor was still present inside the vehicle. The local dealer and manufacturer were notified of the failure, but no assistance was offered. The failure mileage was 165,000.

My wife drives a 2015 GMC Denali with the 6.2L engine. My daughter has an almost identical 2016 Denali with the same 6.2L engine. The 2015 had a serious event at approximately 125,000 miles when one of the rocker arm springs broke under ordinary driving conditions and caused the vehicle to be disabled in the midst of heavy traffic. The 2016 had a virtually identical event at 135,000 miles, which caused the rod to be ingested into the cylinder. I believe the rocker arm springs on these engines are defective, also evidenced by after-market double springs being sold for this engine. I have replaced all rocker arm springs on the 2016 with double springs and will do so shortly on the 2015. The GM dealer in Corpus Christi, TX where we had the 2016 towed told me that the only solution for it was to replace the entire engine at a cost of $11,000+. I paid the dealer $1,000+, towed the truck to San Antonio, and had a mechanic in my employ rebuild it for approximately $2,000. The 2015 had not broken the rod and was repaired by a dealer in San Antonio for approximately $1,250. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Transmission failed and was replaced by GM dealership under warranty at 20,670 miles after rough shifts and jerking and lurching movements when driving and when putting vehicle in gear. Truck would also roll if on a hill in Park. Now at 53,438 miles, the same dangerous problems are occurring with only 33,000 miles on the replaced transmission and after inspection, the dealership says the transmission needs to be replaced again. Appears GMC transmission is faulty and dangerous to drive and needs replacement very early in cars lifespan and a transmission should not need replacement so early especially when maintained correctly. Transmissions should last more than 20,000 or 30,000 miles before failing. Estimate for new transmission is $10,000. Called GMC customer service and said nothing they can do out of warranty. Dealership inspected and confirmed problems both times. Check engine light appeared the 2nd time indicating transmission failure but not the first time.

The contact owns a 2015 GMC Yukon XL. The contact stated while driving at an undisclosed speed, the transmission jolted before the vehicle accelerated as intended while depressing the accelerator pedal. No warning light was illuminated. The contact stated that an independent mechanic was contacted; however, the vehicle was not taken to be diagnosed. The contact stated that unknown repairs were performed on the vehicle, but the failure persisted. The manufacturer was not made aware of the failure. The vehicle remained at the residence and had not been driven since the failure. The failure mileage was unknown.

This is a complaint for my vehicle Gmc2015 Yukon. My Truck brake system(vacuum pump is defective). my large truck is a safety hazard on highway and street . when i attempted to park while depressing my brake pedal it instantly before very hard to press to stop my truck. i have to apply lot of force to my foot inorder to stop vehicle. my mechanic inspected vehicle and it show a bad (defective vacuum pump) . base on former complaints about this same problem (2019 NHSTA campaign number 19v645000 ) it show and state the exact problem with my vehicle. this problem started early last year. Also, when driving on highway and slows down,the brake vacuum pump and brake pedal locks up (very difficult to stop something). this happens intermitting times. very scary trying to stop from crashing into cars in front of me sometime.

There has always been break problems with this vehicle. Some recalls have been done. Now there is a new problem, I took it to the dealership. There is a special coverage to fix this issue. GM denied to fix it because the special coverage expired on 06/06/2024. But the vehicle is under the miles and the problem just started.