The 2021 Chevrolet Tahoe rolled onto the scene with a bold redesign, promising modern tech, increased space, and commanding road presence. But behind its luxurious appeal and family-friendly features, many owners are reporting a range of troubling issues from critical engine failures to serious airbag system malfunctions.
Whether you’re considering buying a pre-owned Tahoe or already own one, knowing these common problems can help you make informed decisions and avoid expensive surprises down the line.
1. Engine Failures and Lifter Collapse
One of the most alarming issues reported by 2021 Tahoe owners involves complete engine failure. The culprit? Collapsed lifters and bent push rods. This problem, mainly affecting the 5.3L and 6.2L V8 engines, can lead to sudden stalling, rough idling, excessive vibrations, or even a complete shutdown sometimes while driving.
Some owners describe their SUV shaking violently, misfiring, and then failing to restart, often with visible smoke from the exhaust. In many cases, this issue appears before 20,000 km, which is especially worrying for a full-size SUV positioned as a premium choice for families.
Expert Insight:
GM has acknowledged the problem internally and redesigned the lifters for newer models, but many affected customers are told to wait until their check engine light flashes before warranty repairs can begin delaying necessary fixes and sometimes leaving drivers stranded.
2. Steering System Issues and Power Assist Failure
Several Tahoe owners have experienced a loss of power steering assist, especially at low speeds. This makes turning the large SUV extremely difficult, raising the risk of accidents in tight spaces or during emergency maneuvers.
Some drivers report their steering completely locked, with no ability to turn the wheel. In response, GM issued a recall in 2021 related to software faults in the steering control system, but complaints about unpredictable steering feedback and warning lights persist.
3. Recalls and Build Quality Concerns
By the end of 2023, the 2021 Tahoe had racked up at least 13 recalls, covering everything from improperly installed seat belts to fuel system risks and malfunctioning airbag warning lights. For a vehicle priced in the upper tier of the full-size SUV segment, that’s a serious red flag.
Inconsistent panel alignment, sunroof leaks, and even water ingress into the cabin have also been reported, with some owners stating their vehicles spent weeks in the shop with no guaranteed resolution.
4. Faulty Seat Belts and Restraint Systems
Seat belt failures aren’t just inconvenient they’re dangerous. The 2021 Tahoe had multiple recalls for missing bolts, improperly attached restraints, and defective seat belt latches, particularly affecting the second-row middle seat. In some cases, passengers couldn’t buckle up at all.
A separate but related issue involves persistent “Service Safety Restraint System” dashboard warnings, even after repeated dealership visits. This not only shakes driver confidence but could prevent proper airbag deployment in a crash.
5. Airbag System Malfunctions and Safety Risks
The airbag system on some 2021 Tahoe models is under investigation by U.S. regulators after reports that airbags failed to deploy during serious collisions. At least 15 consumer complaints have been lodged regarding faulty airbag indicator lights and unexplained system warnings.
In several cases, SUVs involved in frontal crashes experienced significant damage yet the driver airbags didn’t activate. This raises major concerns about passenger safety and whether the systems meant to protect families are doing their job.
6. Lousy Lifespan for the Fuel System
The fuel system has also drawn criticism, with owners describing repeated sputtering, stalling, and loss of power during normal driving. One cause is the vehicle’s power control module, which can cause the fuel pump to shut off sometimes leading to dangerous stalls.
Another recall linked to the 2021 Tahoe involves missing adhesive inside the fuel tank that may cause leaks and, in rare cases, increase the risk of fire.
7. Electrical Gremlins and Tech Glitches
The Tahoe’s electrical system seems to be riddled with gremlins. From infotainment glitches and frozen touchscreens to warning lights that won’t turn off, owners are experiencing a wide range of tech-related issues.
In one case, a vehicle was brought back to the dealer five times, with replacements of the radio, amplifier, and even wiring harnesses yet the problems persisted. Some customers also report brake lights and electronics remaining on after the engine is turned off, draining the battery.
GM has issued internal service bulletins acknowledging widespread electrical concerns, but resolutions remain hit-or-miss depending on the dealership.
8. Structural Weaknesses and Cabin Water Leaks
More than a few owners report water leaking into the Tahoe’s cabin especially through the sunroof, doors, or windshield area. Some SUVs had to be kept at dealerships for over a week while technicians tried (and often failed) to locate and fix the leaks.
Such issues suggest that build quality on the 2021 model may not match the high expectations set by its price and positioning in the market. Add to these complaints about poorly fitting floor mats, warped trim pieces, and creaking interior panels, and the frustration becomes easy to understand.
9. Unreliable Driver Assistance Features
While GM advertises advanced driver-assist features like lane-keeping assist and automatic lane change, many Tahoe owners warn against trusting them blindly.
Several reports describe the lane-keeping system overcorrecting, pulling the vehicle sharply to one side sometimes into oncoming traffic or off the road. Despite multiple recalls and software updates, some users say the issue persists and are forced to keep their hands firmly on the wheel at all times, even during so-called “hands-free” driving modes.
Final Thoughts: Should You Be Worried?
The 2021 Chevrolet Tahoe isn’t all bad it offers impressive towing capacity, strong road presence, and comfort for long journeys. But a growing number of owners are raising red flags over quality, safety, and reliability. If you’re considering buying one, be sure to review the vehicle’s recall history and service records in detail.
For current owners, unresolved problems can be frustrating, especially if parts are backordered or repairs take weeks.
Need Help Diagnosing or Fixing Your Chevrolet Tahoe?
At MotorHub, we connect drivers with certified, brand-trained workshops that understand the complexity of full-size SUVs like the Chevrolet Tahoe. Whether it’s engine troubles, electrical issues, or steering failures, our expert partners are here to provide fast, professional service with full transparency.
Why MotorHub?
• Trusted mechanics with experience in American SUVs
• Transparent service process and real-time updates
• Easy online booking with service coverage across the UAE
