2021 Chevrolet Tahoe · symptom sheet
Engine stalls or loses power while driving
- 119owner reports
- 32,334median miles
- $8,900median quote
- 1involved a crash
Newest report Sep 23, 2026 · checked Oct 2, 2026
349 of the 453 complaints on this car are about the engine. 119 of those describe stalling, which makes it the most reported problem on the 2021 Tahoe.
Tick what matches of 119 reports
Stalling on other Tahoe years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2016, 2017, 2018, 2026.
What this problem usually is
Stalling reports are some of the most alarming on the site. The engine quits while the car is moving, sometimes on a highway and sometimes at a stop. Many owners say it restarted right away and the dealer found no stored code, which is part of why these complaints pile up before anything gets fixed.
What got replaced
Owners who name the part that was replaced mention the fuel pump (41 reports), the battery (11 reports) and the engine (6 reports).
Recalls and investigations
6 recalls on the engine cover the 2021 model year. A recall on the same system isn't always the same failure, so read the defect text.
The original fuel tank may have been replaced with an incorrect fuel tank, which can allow fuel to leak in a rollover crash.
The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure.
The transmission control valve may fail and cause the rear wheels to lock-up.
The rear wheel driveshaft assemblies may have internal components that were not heat-treated properly, possibly resulting in driveshaft failure.
The fuel pump power control module may cause the fuel pump to fail or operate intermittently, which can interrupt fuel flow to the engine, and cause an unexpected engine stall.
The fuel tank assemblies may be missing adhesive between two layers of the fuel tank shell which may result in a fuel leak.
All 16 recalls on the 2021 Chevrolet Tahoe, with the owner complaints on each recalled system
NHTSA investigations into the engine on the Tahoe
Loss of motive power due to engine failure post recall remedy. Open.
Loss of motive power due to engine failure post recall remedy. Closed aug 20, 2026.
Loss of motive power due to engine failure. Open.
Loss of motive power due to engine failure. Closed oct 23, 2025, led to recall 25V-274.
Non-crash engine compartment fires. Closed sep 8, 2008, led to recall 08V-441.
Non-crash engine compartment fires. Closed jun 12, 2008.
Battery leaks acid. Closed jun 28, 2002.
Battery leaks acid. Closed may 2, 2000.
What owners paid
13 of the 119 reports quote a price. Each dot is one quote. The middle half runs $3,310 to $9,925.
When it happens
The middle half of failures fell between 11,000 and 73,000 miles, from the 43 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 14 service bulletins or notices for the 2021 Chevrolet Tahoe that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
This service bulletin advises the technician to check if the transmission cooler lines are twisted to correct customer concerns of Harsh Shift, Shudder, Surge, Stall, Transmission Overheating and/or High Transmission Fluid Temperature.
This service bulletin provides a procedure to replace the FPDCM if found to cause customers concerns of Crank No Start, Stalling, Malfunction Indicator Lamp (MIL) Illuminated – DTC P023F or P129F Set.
This engineering information (EI) closure ends the need for gathering further information from technicians in regard to the vehicle having loss of power and/or having the MIL illuminated on DIC.
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the vehicle having loss of power and/or having the MIL illuminated on the Driver Information Center ...
10 more on the 2021 Chevrolet Tahoe page.
What owners wrote
“2021 Tahoe with l87 engine lifters failed at 2000 miles ,was fixed by dealer then at 82,000 miles same failure only now engine failed, I was driving home when it failed almost got in an accident lost power engine codes were blinking , took to dealer been there since October 20th still at dealership”
Filed Dec 31, 2025 · 2,000 miles
“Engine starting banging loudly and misfiring. There was a loss of power and engine codes. Brought to the dealer and they said cylinder #4 was misfiring due to a stuck lifter, bent push rod and destoyed cam. Total cost of repair was $9200. Vehicle is less than 4 years old an has 75,000 miles on it.”
Filed Aug 15, 2025 · 75,000 miles
“Fuel Pump Module Failure at 27k miles, experienced total loss of power while driving. GM issued a recall for this part in other 2021 Tahoes, but said my vehicle is not included in the recall. Researching online this seems to be a large problem with this model year, yet they did not recall all vehicles. Clearly mine was effected.”
Filed Apr 2, 2025 · 27,000 miles
“While driving in traffic the car shut off, engine stopped. When the car stopped it went into park. Could not restart the car. Starter worked and engine started but ran very rough then stopped several times. I could not completely shut off the car in an attempt to basically reboot. Car had to be towed to the dealer.”
Filed Jan 8, 2023
Should you keep driving it?
This page can't tell you that. 1 of 119 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Paid for this repair before a recall covered it? How recall reimbursement works
Other problems on this car
- Fuel pump failure 74 reports
- Check engine light or misfire 72 reports
- Engine failure, knocking or rod bearing 71 reports
- Airbag warning light or recall 27 reports