Engine, fuel pump and transmission complaints after the redesign
The 2021 Tahoe has about 440 complaints per 100,000 sold, almost twice the model average. Engine failures, fuel pump module stalling and transmission valve body faults lead the list.
Updated November 2026 · based on 466 owner complaints and 16 recalls
440 1.8x the Tahoe average
16 free to fix at a dealer
Every Tahoe year compared
Owner complaints per 100,000 cars sold. Lower is better. The newest years have had less time to collect complaints, so they are marked too new to judge.
Known problems on the 2021 Tahoe
Top problems and what they cost
Engine failure
Pop and loss of power, often lifter or valve problems.
Fix: $2,500 to $8,000; some covered by recall
Engine
Fuel pump module stalling
The truck stalls without warning from a fuel pump control module fault.
Fix: Module $400 to $800
Fuel system
Transmission valve body
Slipping and harsh shifts.
Fix: Valve body $1,500 to $2,500
Transmission and drivetrain
Recalls
Increased steering effort, particularly at lower speeds, increases the risk of a crash.
Overall braking performance may be compromised, increasing the risk of a crash.
Driveshaft failure can cause a sudden loss of drive power, increasing the risk of a crash.
If a seat-belt bracket is not secured, the seat belt may not properly restrain an occupant in the front-row center seat position, increasing the risk of inju...
If a seat belt assembly is not properly attached to the vehicle, the seat belt may not properly restrain an occupant in the event of a crash, increasing the ...
A fuel leak in the presence of an ignition source increases the risk of a fire.
Show all 16 recalls
If an occupied front seat has loose or missing attachment bolts, it may move during a crash, increasing the risk of injury to the seated occupant.
An engine stall increases the risk of a crash.
A passenger in the second-row center will be unable to wear a seat belt, increasing the risk of injury in the event of a crash.
The air bag malfunction indicator light may fail to warn the driver of a problem with the air bag, increasing the risk of injury.
A damaged seat belt can break during a crash, increasing the risk of injury to the occupant.
A seat belt with a deformed rivet may not properly restrain an occupant, increasing the risk of injury during a crash.
Daytime Running Lights that do not deactivate as intended may cause a glare, reducing visibility and increasing the risk of a crash.
Rear wheel lock-up can increase the risk of a crash.
Engine failure increases the risk of a crash.
A fuel leak in the presence of an ignition source increases the risk of a vehicle fire.
Complaints by part
Before you buy a 2021 Chevrolet Tahoe
- Check the VIN for open engine and fuel pump recalls.A recall is a safety fix the carmaker must do for free, even for later owners. Typing the 17-character VIN (on the dashboard and driver door) into nhtsa.gov/recalls shows any that were never done. Codes like 18V332 are recall numbers.The 2021 Tahoe has 16 recalls on record, listed below.
- Feel for slipping and harsh shifts.Rough, delayed or slipping gear changes are early signs of transmission trouble. A rebuilt or replacement transmission often costs $3,000 to $6,000.90 of the 466 owner complaints about the 2021 Tahoe involve the transmission and drivetrain (19%).
- Listen for ticking at idle.Knocking, ticking or rattling from the engine, especially when cold, can mean worn bearings, lifters or a stretched timing chain. These are engine-out repairs costing thousands.Owners filed 69 complaints about lifter failure and ticking on the 2021 Tahoe, one of the worst years for it.
Questions
Is the 2021 Chevrolet Tahoe reliable?
Engine, fuel pump and transmission complaints after the redesign. The 2021 Tahoe has about 440 complaints per 100,000 sold, almost twice the model average. Engine failures, fuel pump module stalling and transmission valve body faults lead the list.
How many recalls does the 2021 Chevrolet Tahoe have?
16 recalls. Recall repairs are free at any Chevrolet dealer, even for later owners. Enter the VIN on the free government recall lookup to see which are still open on a specific car.
What are the most common 2021 Chevrolet Tahoe problems?
Engine failure; Fuel pump module stalling; Transmission valve body.
Crash rating shown for the 2021 Chevrolet Tahoe SUV 4WD. Repair costs are typical U.S. ranges for parts and labor, not quotes. How we score.