2021 Chevrolet Suburban fuel system problems

Filed Nov 6, 2026 · Engine, Fuel system · 166,000 miles · GA

The contact owns a 2021 Chevrolet Suburban. The contact stated that while his wife was driving 40 MPH, the vehicle stalled. An unknown warning light was illuminated during the failure. The vehicle was towed to an independent mechanic and was diagnosed with fuel pump failure. Additionally, the independent mechanic removed the front cover and became aware that the timing chain was laying at the bottom of the oil pan. The contact stated that the failure was a known failure with the 6.2L engines. The contact associated the failure with the federal safety agency Action Number: EA26005. The manufacturer was aware of the failure by phone and referred the contact to the federal safety agency Hotline. The failure mileage was approximately 166,000.

Filed Aug 10, 2026 · Fuel system · 70,000 miles · MA

The contact owns a 2021 Chevrolet Suburban. The contact stated that while driving approximately 40 MPH, the vehicle failed to accelerate as needed. The contact was able to coast to the side of the road, and the vehicle was turned off. There were no warning lights illuminated. The vehicle was towed to the dealer and was diagnosed with fuel pump power control module failure. The vehicle was not repaired. The contact discovered a recall for the issue; the federal safety agency Campaign Number: 21V739000 (Fuel System, Gasoline); however, the VIN was not included. The manufacturer was informed of the failure and confirmed that the VIN was not included in the federal safety agency Campaign Number: 21V739000 (Fuel System, Gasoline). The manufacturer opened a case for the failure. The failure mileage was approximately 70,000.

Filed Aug 7, 2026 · Fuel system · NY

Fuel pulp module failed on highway. Was told there is not a recall on my VIN even tho online there is a recall and known issue for the part

Filed Jul 27, 2026 · Fuel system · 92,709 miles · VA

The contact owns a 2021 Chevrolet Suburban. The contact stated that while driving on the highway, the vehicle experienced reduced engine power and failed to exceed 30 MPH. A message pertaining to the deceleration was displayed. The following Monday, the vehicle failed to exceed 35 MPH, and a friend followed the contact while driving to the dealer. The dealer recommended a fuel filter replacement. The contact declined the repair because the fuel filter life was at 47%; however, the dealer proceeded with the replacement. The contact provided the diagnostic trouble code to an independent mechanic, who informed the contact that the failure was associated with TSB Numbers: 20-NA-197 and 18-NA 361. The contact then advised the dealer of the TSBs, and the dealer determined that the fuel pump module and fuel tank module needed to be replaced. The vehicle was repaired. Additionally, the contact stated that the second-row passenger’s side seat belt buckle failed and was replaced under an extended warranty, although the part was previously replaced under a recall. The manufacturer was notified of the failures several times, but no assistance was provided. The failure mileage was approximately 92,709.

Filed Jul 26, 2026 · Fuel system · VA

Pulled out in 4 lane traffic. Got almost to 55mph. Vehicle lost all power, slowed down and auto shifted to neutral, vehicle stopped and went to park. Vehicle would not start back nor transition to Neutral to remove from highways. 2021 suburban with just 35,000miles. Shut down a lane on a 55mph highway. Code P129F

Filed May 31, 2026 · Engine, Fuel system · AR

Vehicle stalled during routine driving. Code P129F. I was stranded in 95 degree weather with three small children. Please correct and advise ASAP. Had to be towed home. Vehicle inoperable.

Filed Apr 19, 2026 · Fuel system · WA

My 2021 Chevrolet Suburban experienced a sudden no start condition which required the vehicle to be towed for repair. A diagnostic inspection determined that both the fuel pump and the fuel pump control module had failed. I paid out of pocket for the full repair, including replacement of both components. Several months later, GM issued a safety recall for the fuel pump control module on this vehicle. I submitted a reimbursement request to GM. GM agreed to reimburse only the control module , but refused to reimburse the fuel pump, even though the pump failure was directly caused by the defective module that is now under recall. Federal recall reimbursement guidelines require manufacturers to reimburse the full cost of the remedy for the defect. In this case, the defective module caused the fuel pump to fail, making the pump replacement part of the necessary remedy. GM’s refusal to reimburse the full repair cost leaves me paying for damage caused by the recalled component. I am requesting the federal safety agency’s assistance in reviewing GM’s refusal to reimburse the full repair cost associated with this recall related failure.

Filed Feb 18, 2026 · Electrical, Fuel system · 35,000 miles · OH

The contact owns a 2021 Chevrolet Suburban. The contact stated that while driving 45 MPH, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended, and the vehicle decelerated unintendedly. Additionally, the vehicle failed to exceed 42 MPH. Later in the day, the gear shifter was shifted to reverse; however, the vehicle failed to reverse as intended. The vehicle was taken to the dealer, where it was diagnosed with transmission valve body failure. The contact was informed that the transmission valve body needed to be replaced. The vehicle was repaired. The contact stated that the vehicle was at the dealer from December 2024 until June 2025. The vehicle was picked up from the dealer. The contact stated that while driving at an undisclosed speed, the engine seized and failed to restart. The vehicle was towed back to the dealer, where the contact was informed that the fuel pump had failed, and the battery was drained. The contact was informed that the battery and the fuel pump needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 35,000.

Filed Jan 30, 2026 · Fuel system · FL

My 2021 Chevrolet Suburban stalled while driving in late September 2025 and had to be towed to a dealership. The vehicle is subject to an active fuel pump power control module safety recall that has been in effect since 2021. The vehicle was brought in specifically for repair of this issue. The work was processed under warranty, and I was charged a deductible. After learning the repair was directly related to an active safety recall, I requested reimbursement of the deductible, as recall repairs should be completed at no cost. That reimbursement request was denied. I have since been informed that the recall repair was never “completed,” and the recall still shows open in the manufacturer’s system. I am now experiencing shuddering and symptoms consistent with a potential stall recurrence. The original stall occurred while I was transporting my children, including special needs children who require regular transportation to school and therapies. The vehicle failure left us stranded at night in an unsafe area. Due to the prior stall, the unresolved recall status, and the recurrence of symptoms, I do not feel the vehicle is safe to operate. Thank you for your attention to this matter, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 28, 2026 · Fuel system · WA

The front of the fuel tank is hanging down and nearly dragging on the ground. This was with normal driving on a highway. No hitting bumps or aggressive off-road anything. We noticed when we heard a scraping noise going slowly over a slight incline in a driveway that it was hanging down.