2021 Chevrolet Tahoe: engine stalls while driving

Filed Oct 27, 2026 · Fuel system · TN

While driving down interstate at approx. 55-65mph, vehicle "sputtered" and shut off while driving. Vehicle would crank but not start. After sitting approx. 10 mins, was able to restart and drive approx. one mile or less before "sputter" and vehicle died, followed by another crank no start. No check engine lights came on. Vehicle was in roadway in very dangerous location with blind curve requiring Police to be called in fear of my safety, since vehicle was in roadway, I was afraid for my children's safety as there were in car seats in the vehicle at time of failure. I was also concerned about my safety as well as other motorists safety. I was scared that I was going to get hit by another vehicle since my vehicle died in the roadway in a curve. There was an increased probability of injury or death from the faulty part on this vehicle. Police were on scene to assist with traffic, however no report was made, vehicle was disabled. Vehicle had to be towed to residence. CEL came on after approx 3rd start attempt. Believe issue to be Electronic Fuel Control Module which is common with this vehicle year/make/model. However in contacting the dealer in which I purchased Tahoe, they state that this particular VIN has no open recalls, however it matches description on recall N252516900 Fuel Pump Power Control Module. Vehicle is not yet repaired, it has not been inspected, and faulty part is still on the vehicle, vehicle and part are available for inspection.

Filed Oct 22, 2026 · Fuel system · 96,202 miles · NY

The contact owns a 2021 Chevrolet Tahoe. While the contact’s wife was driving 55 MPH, the vehicle unexpectedly started losing automotive power before the vehicle stalled. The driver was able to safely guide the vehicle to the shoulder of the highway. The vehicle was towed to an independent mechanic, where it was diagnosed with a fuel pump power control module failure and the vehicle was repaired. The contact associated the failure with the federal safety agency Campaign Number: 21V739000 (Fuel System, Gasoline); however, the VIN was not included in the recall. The dealer was contacted and stated that there was no recall associated with the VIN. The manufacturer was contacted by phone and made aware of the failure. The failure mileage was approximately 96,202.

Filed Oct 5, 2026 · Fuel system · 50,000 miles · WI

The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving approximately 40 MPH, the vehicle lost automotive power, stalled, and failed to return to normal operation. The contact researched and was made aware of the federal safety agency Campaign Number: 21V739000 (Fuel System, Gasoline); however, the VIN was not included. The vehicle was towed back to the residence. A dealer was contacted by phone and made aware of the failure. The manufacturer was notified of the failure by phone, and the manufacturer referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was approximately 50,000.

Filed Sep 15, 2026 · Engine · VA

2021 Chevrolet Tahoe – Unexpected Shutdown/Restart While Stopped On two separate occasions, my 2021 Chevrolet Tahoe has unexpectedly appeared to shut down while I was stopped with my foot on the brake. The vehicle is equipped with Auto Stop/Start, and initially the event seems like a normal Auto Stop. However, instead of a normal engine Auto Stop/Start cycle, the vehicle appears to shut down or reset more completely. The event is jarring, and the power door locks lock/unlock as the vehicle shuts down and restarts. The vehicle subsequently restarts and I have been able to continue driving. This has now occurred twice while stopped. I am concerned that the vehicle may be experiencing an unintended stall, loss of electrical power, or another malfunction rather than normal Auto Stop/Start operation. I checked my VIN through the federal safety agency and it does not currently show an open recall. I am aware that certain 2021 Chevrolet Tahoes have previously been recalled for a condition that could result in an engine stall, although my VIN does not appear to be included in that recall population.

Filed Aug 10, 2026 · Fuel system · PA

Fuel Pump Power Control Module failed. GM Part Number: 13554821 My vehicle immediately became immobilized in a lane of traffic. The engine would crank but not start. It appeared that no fuel was pumped. This was confirmed with engine code P149F. GM diagnostic code P129F indicates a Fuel Pump Driver Control Module (FPDCM) fuel pump speed signal fault… My vehicle with 51,000 miles was serviced on 5/6/2026 for PA inspections, oil change and transmission flush. The VIN has no open recalls. GM has recognized the failure rate of the Fuel Pump Power Control Module, GM Part Number: 13554821 on many 2021vehicles and issued 2 recalls: 21V739000 issued September 23, 2021 And N252516900 issued September 11, 2025 Recall N252516900 was issued as a “phased launch” and yet (per GM) the Reason For This Recall: Certain vehicles may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. And Consequence Summary: An engine stall increases the risk of a crash. The vehicle instantly can become immobilized regardless of its location, in the middle of an intersection or in a lane of traffic. Without the engine running, the Tahoe cannot be shifted out of Park and cannot be pulled, pushed or dragged without causing damage. It must be properly loaded on a flatbed and be hauled from the failure site. GM “phased launched” the September 2025 recall to handle parts shortage. GM realizes how CRITICAL this recall is because a vehicle can become totally immobilized instantly. The dealership says my VIN shows no open recalls and are resistant to making a request for authorization to apply this recall. I think the failure of the Fuel Pump Power Control Module needs to be escalated until recall indicates ALL vehicles involved. I am glad I wasn’t entering a busy intersection when my vehicle became fully immobilized. As it was, vehicles were unable to go around for the 45 minutes I waited for a tow truck.

Filed Jul 13, 2026 · Fuel system · 68,000 miles · TN

The contact owns a 2021 Chevrolet Tahoe. The contact stated that while reversing out of the driveway, the vehicle unexpectedly stalled. There was no warning light illuminated. There were no warning lights illuminated before the failure. The contact attempted to restart the vehicle; however, the engine cranked but failed to start. The contact stated that the vehicle had experienced the failure associated with the federal safety agency Campaign Number: 21V739000 (Fuel System, Gasoline); however, the VIN was not included in the recall. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure but provided no assistance. The contact was referred to the federal safety agency Hotline for assistance. The approximate failure mileage was 68,000.

Filed Jul 2, 2026 · Engine, Fuel system · IL

DATE: 06/17/2026 The engine shuts off without warning while I am driving, recurring roughly every 10 miles. When it stalls, the dashboard and electrical accessories stay on, but the vehicle loses motive power, along with power steering assist and power brake assist, which is extremely dangerous at road speed and in traffic. This began immediately after dealer service completed on 6/18/2026. During that visit the dealer performed two safety recalls (N252494000, the "L87 Engine Loss of Propulsion" PicoScope inspection with oil change; and N252510321, ECM software reprogramming) and a valve lifter replacement that required removing both cylinder heads. The vehicle was running and fully drivable when I dropped it off, and was returned stalling repeatedly while driving. It never did this before the service. At first the engine would not restart after stalling. The dealer replaced the starter; it now restarts but continues to stall every ~10 miles. A dealer diagnostic scan recorded numerous "Lost Communication" codes across nearly all control modules, plus control-module input-power codes showing low voltage and power-circuit correlation faults (e.g., U3505, U3018, U3007) and an active loss-of-communication code for the power steering module — consistent with an intermittent loss of electrical power or ground affecting engine control. The engine passed the recall's connecting-rod/crankshaft (PicoScope) inspection, so this is not the recalled bearing failure mode. The vehicle is currently at the dealership and is undrivable. The dealer has ordered a new engine and apparently also a new radiator for reasons unknown. No crash or injury has occurred to date, but the vehicle lost power while on the freeway at speed multiple times. A GM customer assistance case is open. Repair orders and the diagnostic scan are available on request.

Filed May 7, 2026 · Fuel system · 29,000 miles · DE

The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving at approximately 35 MPH, the vehicle began bucking and sputtering, and the check engine warning and then the low fuel warning lights illuminated. The contact existed the highway and while on the exit ramp the vehicle stalled. The vehicle was towed to an independent mechanic where it was diagnosed that the fuel pump needed to be replaced. The contact believes that the failure was associated with the federal safety agency Campaign Number: 21V739000 (Fuel System, Gasoline). The vehicle was not repaired as of yet. The manufacturer was notified of the failure. The failure mileage was approximately 29,000.

Filed Apr 6, 2026 · Fuel system · 62,000 miles · NJ

The contact owns a 2021 Chevrolet Tahoe. The contact stated that while at a red light, the accelerator pedal was depressed; however, the vehicle stalled. The check engine warning light was illuminated. The contact researched and was made aware of an unknown the federal safety agency recall; however, the VIN was not under recall. The vehicle was towed to an independent mechanic, where it was diagnosed, and determined that the fuel pump control module needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 62,000.

Filed Mar 18, 2026 · Engine · WA

I was driving down I-5 at 75mph and the truck shut off while driving. Couldn’t get to start. Paid over $1k for a new battery cause dealership couldn’t replicate problem. Next day doing 75mph on freeway engine through a rod.

Filed Feb 20, 2026 · Fuel system · 111,000 miles · NH

The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving approximately 25 MPH, the accelerator pedal was depressed, and the vehicle started losing motive power. There was no warning light illuminated. The vehicle stalled and was unable to be restarted. The vehicle was towed to a local dealer, where it was diagnosed and determined that the fuel module had failed and needed to be replaced. The vehicle was repaired. The contact researched online and associated the failure with the federal safety agency Campaign Number: 21V739000 (Fuel System, Gasoline). The dealer was contacted for information if the VIN was under recall, and was informed that the VIN was not included in the recall. The manufacturer was not informed of the failure. The failure mileage was approximately 111,000.

Filed Feb 2, 2026 · Engine, Fuel system · MI

1ST ISSUE: 9/2025, after driving from another city to my home at 55-75 mph. As I pulled up home, the car just stalled and wouldn't start. I googled issue to find out it was a commonly known issue by GM. If fuel pump control module had happened while driving faster and not on my street to roll up to curb. I would have or could have been deadly. I find out what part # and local dealer knew there was a recall but told me he never heard about it and charged me for part. I installed in front of home on street and have been trying to get money back after reporting to GM I repaired my fuel pump control module and have been trying to get my money back from a repair done on 9/29/2025 by me. GM says it's looking into still after I keep calling them on status of this notice. I still have old part. I have filled out all reimbursement forms.1st the danger of it failing and now no money. By the time engine light comes on you have no power for any stopping or steering. #2 engine 2021 Tahoe High Country 6.2 L V8: NO RECALL HAS BEEN SENT. GM has known about an engine that has multiple failure issues that could GET YOU IN A SERIOUS ACCIDENT/death BY JUST STOP RUNNING, while just driving at any moment, INTERNAL FAILURES and main seal leaks, MORE! Mine just poured oil out on driveway after driving 6 miles to church and back. this will be the largest and most deadly auto issue in history. They even had dealers now with any on lot with this engine a stop sale order. aprox. 800,000 of these engines are out there, Local GM dealer says THERE IS NO RECALL. 2021 TO 2026 and they have only changed out aprox. 2800 engines and telling me mine sitting in driveway is not on recall. BS. these engines are in their high-end trucks, SUV's, Escalades. Someone needs to get Gm to do what's right and replace with new engines. That have been tested, all issues before someone has to die. Trying to keep silent on internet is sad. Yes its going to cost billions. But to keep customers safe and not scared.