2015 Chevrolet Tahoe Fuel system Problems

The failure is believed to have originated in the fuel delivery system, specifically the check valve in the low-pressure fuel feed jumper line at the engine. This valve failed to seat properly, allowing high-pressure pulses to travel back into the low-pressure side of the system. This malfunction caused the S-shaped portion of the fuel feed line near the tank to vibrate excessively against its mounting clip. This constant friction wore through the line, resulting in an active fuel leak. All damaged components remain on the vehicle and are available for inspection upon request. The safety of the driver, passengers, and the public is at immediate risk due to a severe fire hazard. Because the leak is located near the fuel tank and undercarriage, gasoline is being released where it could be ignited by road sparks, static electricity, or exhaust heat. A fuel leak of this nature threatens a catastrophic fire that could result in vehicle loss or personal injury. The problem has been confirmed via a physical inspection that matches the symptoms documented in a GM Service Bulletin (Recall - High Pressure Fuel Pump Leakage). While the vehicle has not yet been subjected to a formal tear-down by a dealer due to the danger of driving it with a leak, the visual evidence at the exact location specified in manufacturer documentation confirms the failure. To date, the vehicle has not been inspected by the manufacturer, police, or insurance representatives. Prior to the leak, the primary symptoms were an audible rattling and ticking noise from the engine bay and underside, characteristic of the pressure pulses described in the TSB. There were no warning lamps or dashboard messages, as the mechanical wear on the exterior of the fuel line occurred outside the scope of the vehicle’s onboard diagnostic sensors.

NHTSA ID

11725521

Incident

Feb 21, 2026

Vehicle cranked longer than usual, noticed slight smell of fuel. After arriving home noticed fuel smell was very strong and a puddle of raw fuel under vehicle. Fuel line appears to have rubbed/vibrated against the frame of the vehicle causing the line to rupture. Date of incident 12-26-2025. No MIL or warning messages were present. The vehicle has not been inspected by anyone other than myself for this incident. I feel this issue could have resulted in serious injury or death of my entire family and possibly others on the road. The vehicle has not been modified in anyway and is in OEM configuration. We will have to have the vehicle repaired but will document as best we can. I would like to add that after a quick internet search I found this to be a common issue so I was amazed there was no recall on our Tahoe. Thank you.

NHTSA ID

11707176

Incident

Dec 26, 2025

I am leaking fuel from the fuel lines connected to the fuel tank. I can smell the fumes inside of the cab. I also can see the fuel leaking under the driver seat.

NHTSA ID

11678880

Incident

Jul 29, 2025

Fuel line leak. After researching it appears there was a safety recall for this in the 2015 Chevy Tahoe.

NHTSA ID

11673084

Incident

Jul 12, 2025

I’ve had to have the fuel line replaced 3 times because of fuel leaks.

NHTSA ID

11657830

Incident

Feb 12, 2025

While driving multiple times the vehicle has completely lost power or almost died in the middle of the roadway. It has been taken to the dealership multiple times and they are reporting transmission and catalytic converter issues, however these issues were present at 20,000 miles and taken back to the dealership to be fixed. This is now a reoccurrence of issue and the dealership refused to warranty or fix the reoccurring issue. Loss of power while driving and random acceleration have occurred and almost caused accidents on multiple occasions

NHTSA ID

11644304

Incident

Dec 28, 2024

Fuel pouring from underneath the truck

NHTSA ID

11624476

Incident

Nov 8, 2024

Recently I've noticed that when I try to accelerate or take off from stop it does not pick up speed as use to. My engine rpms rise but speed is getting less and less. I've also noticed my transmission temperature is staying between 190-200 degrees which gm has already had recalls over pertaining to this style transmission having issues due to high heat. Vehicle has always had maintenance kept up with and never abused. Have taken to local shop since warranty ran out several times for inspection of transmission well my complaints in regards and have fluid done. Recently I've noticed fluid is needing to be replaced more frequently due to losing viscosity from overheating and being burnt, has the familiar and similar smell of toast being burnt. This is a 2016 Tahoe ltz w just over 200k, yes in some ways a lot but considering the cost of vehicle new/age/synthetic fluids and everything it seems to me the transmission should last longer especially considering it's been maintained. These new vehicles are outrageous and the transmissions are very expensive as well, considering these same transmissions have had recalls from GM I'm a little aggravated and frustrated on how some can and can't. I'm familiar and aware they say it's per manufacturing plant and particular models but confused as to how if the transmission that has had recalls for overheating doesn't comply to all the transmissions that are same type, I think it's bogus n a way not to be responsible for accepting failures n having to replace all parts so gm says it only happened here n with these parts. I guarantee you if someone would take a look at gm shipping and papers they would see it. If a 2016 4l60e had problems it's more than likely all of them in that year had all same parts so therefore all acceptable to failure, its not like transmission maker chose different parts to send to different plants or this get that no thats just b.s. so there not responsible for all of them so they pick plant with most failures

NHTSA ID

11614387

Incident

Jan 1, 2022

The high pressure fuel pump may leak resulting in fuel odor and increased evaporative emissions. The engine may also fail to start or provide less power when driven due to insufficient fuel pressure. Recall came out on February 2015 Bulletin No.: 14858 Part Number: 12626354 Description Intake Manifold Gasket 12618337 Intermediate Fuel Feed Pipe 8/V8 Engine 12625817 Fuel Pump SERVICE PROCEDURE

NHTSA ID

11602331

Incident

Jun 15, 2024

The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving at an undisclosed speed, there was an abnormally strong odor inside the vehicle. The contact stopped the vehicle to complete an inspection of the vehicle. The contact became aware that there was a large fuel leak on the ground. The contact stated that when the vehicle was turned off the fuel leak stopped. The contact stated that fuel only leaked out when the vehicle was running. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure but provided no assistance. The contact researched and discovered TSB: 17-NA-304; however, the contact was informed that the repair could not be covered under the TSB. The failure mileage was approximately 220,000.

NHTSA ID

11597036

Incident

Jun 26, 2024

Mileage

220,000 mi

The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated, and the vehicle shuddered. The vehicle was taken to a dealer where it was diagnosed with a high-pressure fuel pump leak. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 19V837000 (Fuel System, Gasoline) however, the model year was not included in the recall. The dealer confirmed that the vehicle was not included in the recall. The manufacturer was made aware of the failure and also confirmed that the vehicle was not included in the recall. The failure mileage was approximately 65,000.

NHTSA ID

11596167

Incident

May 15, 2024

Mileage

65,000 mi

Fuel line has a hole in it from rubbing against the frame this is the 2nd time I've had to repair the fuel line in the 3.5 years I've had the vehicle

NHTSA ID

11575893

Incident

Mar 6, 2024

I was constantly smelling a strong odor of gas coming from the inside/outside of my 2015 Chevy Tahoe. When I purchased the vehicle in 10/23 everything appeared fine. I researched the internet to determine what the problem could be & found dozens of similar situations. People saying the fuel line rubs the undercarriage of the vehicle causing a pin hole size in the fuel line causing it to leak gas. Currently my vehicle is in the shop and the problem is TBD.

NHTSA ID

11560484

Incident

Nov 27, 2023

The high pressure fuel line from the fuel pump to engine sustained a pinhole leak over the fuel tank. Fuel leaked over top of tank and ran down front drivers side front of tank. Discovered the leak after noticing strong fuel odor inside vehicle. Took to shop. The fuel line is installed as so it will rub undercarriage of vehicle. This is what happened to mine. This is a factory install and the lines are doomed to fail because of this. The excessive contact rubs holes into the lines. This seems to be a common problem with the 2015, according to my research. There are hundreds of these same complaints with this year listed all over repair sites on the internet. I believe this needs looked into, as flammable fuel leaking suddenly can be a hazard.

NHTSA ID

11548715

Incident

Oct 6, 2023

The contact owns a 2015 Chevrolet Tahoe. The contact stated that she would smell the odor of gasoline when she approached the vehicle. The contact stated there was a stain on her driveway that was gasoline. Most recently, the contact saw that fuel was dripping from the fuel tank. Also, the contact stated that the vehicle had become more difficult to start in the morning, sometimes taking over four attempts. No warning light was illuminated. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle was not diagnosed or repaired. The manufacturer had been informed of the failure. The contact had researched online and related the failure to the manufacturer Technical Service Bulletin Number: 17-NA-304 Possible Fuel Leak (Fuel System, Gasoline). The failure mileage was approximately 120,000.

NHTSA ID

11548688

Incident

Oct 2, 2023

Mileage

120,000 mi

Gas leaking out of my vehicle. First noticed it right after pumping gas then started smelling a strong odor of gasoline!

NHTSA ID

11543129

Incident

Sep 1, 2023

The contact owns a 2015 Chevrolet Tahoe. The contact stated that after refueling the vehicle, an abnormally strong fuel odor was detected. The following day, while starting the vehicle, the strong fuel odor was detected again. Additionally, the contact noticed fuel leaking from the fuel line onto the ground when the vehicle was parked. The vehicle was taken to the dealer; however, the vehicle was not yet diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 182,000.

NHTSA ID

11543123

Incident

Aug 31, 2023

Mileage

182,000 mi

STARTED SMELLING GAS FUMES. NOTICES GAS DRIPPING FROM UNDER VEHICLE LEAVING PUDDLE UNDER VEHICLE DRIVERS SIDE. SAFETY DUE TO GAS LEAK UNDER VEHICLE. BROUGHT TO BALISE CHEVROLET SPRINGFIELED MASSACHUSETTS. LEAK CONFIRMED FROM TOP OF TANK. REMOVED FUEL TANK AND FOUND THAT THE FEEDING HOSE HAS A HOLE DUE TO IT RUBBING ON THE TANK RECOMMENDED REPLACING FUEL SENDING UNIT, RING AND HOSES DUE TO MILEAGE. WHICH IS ONLY 114088. FUEL PUMP, MODULE UNIT RING, 2 HOSES REPLACED. THERE WERE NO WARNING LAMPS, MESSAGESOR OTHER SYMPTOMS PRIOR TO FAILIURE.

NHTSA ID

11534671

Incident

Jul 22, 2023

The fuel tank is leaking from the top of the tank.

NHTSA ID

11531608

Incident

Jul 7, 2023

Leaking fuel from the in-line on top of gas tank. Very dangerous and alarming that this is a known issue and you choose to set back doing nothing. It’s the same exact problem that everyone is talking about so it’s be nice to be reimbursed for the parts or repair or something

NHTSA ID

11523935

Incident

May 25, 2023

2015chevy Tahoe LT fuel pump rattle cause fuel line to rattle. Service Bulletin Bulletin No.: 17-NA-304 Date: February, 2020 Subject: Brand: Cadillac Chevrolet TECHNICAL Ticking, Rattle and/or Buzzing Noise Heard from inside Passenger Compartment, Possible Fuel Leak Model: Escalade Escalade ESV Model Year: from VIN: Engine: L86 L86 L83 L83 L83, L86 L83, L86 Transmission: to from to Suburban Tahoe 2015 Yukon Models Yukon XL Models 2020 GMC Involved Region or Country North America, Middle East, Europe, Russia, Chile, Columbia, Ecuador and Peru. Condition 1 Some customers may comment on the following condition: • Arattlingand/ortickingnoisethatmaybelouderinsidethevehiclethanoutside. ⇒ The noise may be picked up at the back of the left valve cover, and/or underneath the vehicle near middle of the driver’s door. ⇒ This noise will be noticeable at idle, most noticeable in the 700-900 RPM range. ⇒ The noise may also sound like a lifter tick. ⇒ This may also be called a fuel line buzz or ringing noise. • Whiletherattleisoccurring,theS-shapeportionofthefuelfeedline,rightinfrontof the tank, will be vibrating / rattling. Condition 2 Some customers may comment on a fuel leak. Diagnosis that the fuel leak is originating from the fuel feed line at the molded-in clip on top of tank. Cause The rattling, ticking noise may be caused by the check valve in the low pressure fuel feed jumper line at the engine not fully seating, allowing pressure pulses from the high pressure side back into the low pressure side of the fuel system. These pressure pulses could cause the S-shaped portion of the fuel feed line, in front of the tank, to vibrate and/or rattle If the S-shaped portion of the fuel line rattles over a period of time, the fore-aft motion in the line could result in wear. This wear could result in a fuel leak where the line is secured into the molded-in clip on the tank.

NHTSA ID

11518801

Incident

Feb 1, 2023

The contact owns a 2015 Chevrolet Tahoe. The contact was attempting to start the vehicle, but the vehicle intermittently stalled, and the contact smelled and abnormal fuel odor inside the vehicle. The contact stated no warning light was illuminated. The contact exited the vehicle and noticed a puddle of fuel underneath the fuel tank. The contact towed the vehicle to a used dealer, where it was diagnosed with needing the fuel tank to be replaced. The vehicle was not repaired. The contact towed the vehicle to the independent mechanic and had the fuel tank was replaced. The vehicle was repaired but continued to experience the failure. The contact took the vehicle back to the independent mechanic, where it was diagnosed with needing the fuel lines to be replaced. The vehicle was repaired but continued to experience the failure. The contact took the vehicle to another independent mechanic, where it was diagnosed with needing the fuel lines to be replaced again. The vehicle was repaired but continued to experience the failure. The manufacturer had not been informed of the failure. The failure mileage was approximately 148,000.

NHTSA ID

11515509

Incident

Jun 1, 2022

Mileage

148,000 mi

I bought the vehicle from Dan Cummins dealership and a few months later started to smell gasoline got it checked vehicle replaced the gas line it was leaking

NHTSA ID

11513471

Incident

Apr 4, 2021

The fuel feed hose that tracked on top of the gas tank rubs against a portion of the tank and a pinhole sized hole gets created. Anytime the vehicle is on or fuel pump pressurizes the line, fuel is sprayed all beneath the vehicle. Gm has made a “fix” to the line by adding a shroud to the updated part. Part number 84200271 is the updated part. I contacted Martin Chevrolet in crystal lake Illinois and was advised since my vehicle was out of warranty nothing was covered. Spraying fuel due to bad engeeniering is as unsafe as it gets.

NHTSA ID

11503113

Incident

Jan 19, 2023

Came home and could smell gas. Had just filled up so ignored it. Next day, just pulling into driveway, husband could see gas pouring out the bottom below the drivers seat area.. fuel line split. Had to have it towed to dealership and paid nearly a grand to get that repaired. Warranty wouldn’t cover it..

NHTSA ID

11499577

Incident

Aug 19, 2021