Which parts fail
Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 Chevrolet Suburban owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2015 Chevrolet Suburban. The contact stated that the odor of fuel was present inside and outside the vehicle. The contact stated that upon investigation, it was discovered that fuel was leaking under the front of the vehicle. The vehicle was taken to the local mechanic who determined that the fuel line had ruptured due to excessive rubbing against other components. The fuel line was replaced, and the vehicle was repaired. The local dealer and manufacturer were notified of the failure, but no assistance was offered. The failure mileage was 155,000.
My wife called me and said she could smell gasoline in our 2015 suburban. I went to the store she was located at and it smelled like raw gasoline. I called a tow truck company and to haul our suburban to the shop. The fuel line has been rubbing against the vehicle frame and rubbed a hole in it. This is very dangerous as the fuel take and line is located right underneath my kids seats.
Due to a faulty design, the fuel feed line (GM part # 84200271) has been worn through from vibration resulting in a pin hole in the line at the point where the fuel line is seated in the molded-in clip retainer of the fuel tank. This wear has resulted in raw fuel pouring over the top of the fuel tank and producing a significant risk to life and health from fire and inhalation. The fumes from the raw fuel could be smelled through the A/C vents while driving highway speed (inhalation hazard). Once the vehicle is turned off the fuel leak subsides. However, while idling in park the fuel leak would puddle under the vehicle resulting in a significant and potentially catastrophic fire hazard. While researching the symptoms of my issue, I discovered many complaints of the exact symptoms and findings that I have discovered. …
While driving, I noticed a significant smell of gas coming from my 2015 Chevrolet Suburban. When I stopped the vehicle, it was even more noticeable. I pulled over and got out of the car only to notice gas pouring (not dripping, more gushing) from under the vehicle between the driver's side door and driver's side passenger door. I was concerned as I had my young child with me and had no way of having someone pick us up. I drove it directly to the mechanic in which they confirmed a leak coming from above the tank and that they would not be able to repair the leak until they dropped the tank. Once dropping the tank, they found a hole in the fuel supply line above the tank due to a poor design and friction from the poor design. There is a service bulletin, 17-NA-304, but it does not protect owners from the cost of the repair. …
We smelled gas inside and outside of the car. Upon inspection, I found gas leaking from the fuel line under the vehicle that comes from the fuel tank. This created a dangerous situation as noxious fumes were introduced to the cabin of the vehicle, and the leaking gas created a fire hazard. We took the vehicle to the dealer, and they confirmed that the frame rubbing on the fuel line created a dangerous leak. They confirmed this is a common problem for this model and a redesign of the replacement fuel line would prevent the problem in the future, but no recall has been issued. We paid $1180.20 to have the fuel line replaced. No inspections other than the dealer and myself have been performed. No warning lights or messages indicated the problem.
Fuel line leak caused by design flaw in which line plastic fuel feed line (GM part #84200271) is installed too close to the undercarriage, causing it to rub against the frame due to vibration and wear a pinhole. This is known by gm in service bulletin Service Bulletin 17-NA-304. This is a fuel leak, that can causes significant fire danger to people, property, and nature. Eventually putting first responders at risk. Also the environmental risk of continuous leaking fuel. Luckily, I could smell it before anything bad happened. But if GM knows about this issue, it's big enough they should do something about it and so should the NHTSA.
We had just completed a 1,000 mile trip for a family emergency. When we arrived at our destination, we found that somewhere during the last 500 miles of the trip, we had developed a fuel leak. After removing the fuel tank, my husband discovered a break in the fuel feed hose, as well as several worn spots in the line and on the top of the fuel tank. We were traveling in 100 degree weather, and I am just thankful at this point that the Suburban did not catch on fire!
Replaced lifters 1,3,5,7 and added automatic fuel mgmt system bypass chip after the vehicle went into limp mode ON THE HIGHWAY. Ran for less than 2000 miles and those same lifters failed a second time and had to be replaced AGAIN. The last incident occurred after about 200 miles and had engine failure, limp mode with multiple sensor failures in the middle of the road in the dark. Limited ability to move it safely off the road.
We experienced a massive fuel leak from the top of the fuel tank. The car was still able to run, but there was fuel draining all over the place around the bottom of the car. My wife drove the car with our four kids in it for about 50 miles before we knew what was going on.
2015 Chevy Suburban. Starting my car the morning of 19 aug 20 I found it odd that it struggled to start. Arrived at work and noticed a strong fuel smell, didn't think much of it, maybe the car next to me. I leave work, and it struggled again. Thought I should look a little when I got home. When I arrived it smelled strongly of fuel again. Upon the inspection of my vehicle, I found the fuel leak. The fuel tank is completely soaked in gasoline. I take it to my trusted mechanic to have a better look and he informed I have to replace the hose in the fuel line above the gas tank between were the two doors meet. Part no. 23248011. It was stationary when I suspected something but evidence suggest the line was rubbed against other components in the undercarriage and damaged the fuel system while in motion. …
Fuel System complaints in other Suburban years
Frequently asked questions
How common are fuel system problems on the 2015 Chevrolet Suburban?
NHTSA has 27 complaints about the fuel & propulsion system of the 2015 Chevrolet Suburban, 6% of the model year's 431 complaints. The component named most often is delivery › hoses, lines/piping, and fittings (1 mentions).
Is there a recall for 2015 Chevrolet Suburban fuel system problems?
No. NHTSA lists no fuel & propulsion system recall for the 2015 Chevrolet Suburban, though it has 11 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2015 Chevrolet Suburban fuel system problems start?
Half of the complaints with a recorded mileage happened before about 55,000 miles, and 36% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 1 fire and 0 injuries to fuel & propulsion system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.