2015 Chevrolet Tahoe: fuel pump failure

Filed Mar 19, 2026 · Fuel system · AL

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.

Filed Dec 13, 2024 · Brakes, Engine · 5,000 miles · MI · 1 injury

The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving from a complete stop and while driving at various speeds, the vehicle made an abnormal whining sound. There was no warning light illuminated. The vehicle was taken to the local dealer, where the transmission was replaced. The contact stated that after retrieving the vehicle from the dealer while driving 10-15 MPH, the brake pedal was depressed but was significantly firm and failed to respond. The contact drove into a curb and struck a parking sign pole. The air bags did not deploy. The contact stated that the failure exacerbated pre-existing injuries. The dealer was contacted and advised the contact to restart the vehicle and depress the brake pedal to verify whether the brake pedal was operable. The contact followed the dealer's instructions, and the brake pedal responded as needed; however, the vehicle was towed to the residence because the contact was concerned about driving the vehicle. The vehicle was then towed to the dealer, where it was diagnosed and determined that the vacuum pump needed to be replaced. The dealer replaced the vacuum pump; however, the failure recurred while driving. The check engine warning light was illuminated. The vehicle was taken back to the dealer, where it was diagnosed and determined that the lifters had failed. The vehicle was not repaired. The vehicle was taken to a second dealer, Midway Chevrolet Plainwell Auto Dealer (381 12th St, Plainwell, MI 49080), where it was diagnosed that the fuel pump wires, the transfer case oil and seal, the engine oil coolant hose, the valve cover gasket, and other unknown parts needed to be replaced. Additionally, the dealer determined that the ball joints needed to be replaced, and an alignment needed to be performed. The dealer also determined that the air ride compressor was noisy. The vehicle was not repaired. The vehicle was then taken to a third dealer, Heritage Chevrolet, Inc. (350 W Dickman Rd, Battle Creek, MI 49037), where it was diagnosed with an oil leak.

Filed Jul 15, 2024 · Fuel system · NC

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

Filed Jun 24, 2024 · Engine, Fuel system · 65,000 miles · TX

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 the federal safety agency 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.

Filed Oct 6, 2023 · Fuel system · IN

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.

Filed Jul 26, 2023 · Fuel system · MA

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.

Filed Apr 25, 2023 · Fuel system · CA

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.

Filed Jan 23, 2023 · Fuel system · IL

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.

Filed Aug 23, 2022 · Fuel system · MI

Starting on August 13, 2022, my 2015 Chevrolet Tahoe exhibited a harder than normal start condition prior to a drive of approximately 80 miles home from visiting a relative. The car drove normally on that trip. After that return home I parked the subject vehicle in the garage and emptied it of my belongings. I noticed a fairly strong gasoline smell and inquired with my wife if perhaps she had re-fueled our other vehicle and experienced any over fill. Shed said no, so I left the garage open to see if it would air out of the fuel smell. It did through the course of the afternoon so I closed the garage that evening. The next morning (August 14, 2022) we had an event to get to in the morning and were planning to take the subject vehicle. The vehicle again had a hard start issue and within 10 seconds of starting I could smell fuel while inside the vehicle with the windows up. I immediately stopped the ignition and looking under the subject vehicle. I saw gas flowing down the side of the fuel tank from above and dripping on the floor at a rapids rate of 2-3 drops per second. This continued for about 5-10 minutes gradually slowing down since the the ignition had been shut off and as the fuel pressure in the system was reduced. By the end there was a puddle of fuel about 1 ft in diameter on my garage floor under the vehicle. From that point and after any strong gasoline vapor smell had subsided, I decided the vehicle needed to be moved from the garage and parked on the street. I parked it on the street and decided I would take it to Marty Feldman Chevrolet immediately early in the morning of August 15, 2022, while roads were less busy. There was no warning light or indication prior to the leak. In some quick research, I found several concerns related to fuel line abrasion and fuel pump leaks/failures. Marty Feldman Chevrolet diagnosis/repair costs are documented in this complaint. Components are available for inspection.

Filed Nov 13, 2019 · Fuel system · 120,000 miles · OH

I had a system failure light that came on my 2015 tahoe. When I brought it to voss chevrolet dealership in centerville ohio, they told me that my high pressure fuel pump was failing and that I would need to replace it along with the fuel lines. Upon further research I learned that gm had issued a recall bulletin (tsb 14858) in 2015 for select 2015 tahoes. The tahoe's affected included vehicles with an 8 cylinder engine (rpo l83 or l86). This describes my vehicle but the dealership said gm did not include my VIN in the recall, so they could not fix it under the tsb recall. I called gm directly and they also said my vehicle VIN was not part of the recall. They were not very clear as to which vins they decided to include when all of the tahoe's were made on the same production line. This is a safety issue and clearly all of the vins should be included in the recall of the high pressure fuel pump and the hoses. Gm called the dealership and paid a portion of the expenses, but I still had to pay more than $300 out of pocket for an issue that is known to gm.

Filed May 12, 2017 · Electrical, Engine · 52,500 miles · MD

Tl* the contact owns a 2015 chevrolet tahoe. While driving at a slow speed and making a left turn, the vehicle stalled. The contact stated that the vehicle lost electrical power. The vehicle was unable to restart and the doors would not open. After approximately thirty minutes, the vehicle was able to be restarted. The contact stated that the failure previously occurred and that the high pressure fuel pump needed to be replaced. The vehicle was repaired, but the failure recurred. The dealer diagnosed that the amperage from the battery was insufficient, which caused the vehicle to stall. The battery was replaced. The contact was concerned that the dealer was unable to verify if the failure was fully remedied and if the vehicle was safe to be driven. The manufacturer was notified of the failures. The approximate failure mileage was 52,500.

Filed Jul 31, 2015 · Fuel system · 25,200 miles · CA

We have been noticing an excessive fresh fuel smell which we believe to be coming from the exhaust when we start our vehicle to warm up prior to driving in the morning. Also sounds like exhaust is missing a little at idle. Took it in and dealer could not find any codes relating to our problem. They did however find a tsb 14858 for possible high pressure pump leak. They replaced high pressure fuel pump and seals with new line and test drove vehicle. They state vehicle is ok. We just picked up vehicle so have not had a chance to see if the problem of smelling excessive gas is still present or not. Will confirm in the morning