Engine Lifter Failure

Premature wear and failure of hydraulic lifters in the 5.3L and 6.2L V8 engines. This can lead to internal engine damage if not addressed promptly. Estimated repair cost: $2,500 - $4,500.

Fuel Pump Control Module Failure

The fuel pump control module can fail, leading to intermittent or complete loss of fuel delivery to the engine. This is a critical safety concern due to potential stalling. Estimated repair cost: $600 - $1,200.

Electrical System Malfunctions

Various electrical issues have been reported, including instrument cluster failures, SRS warning lights, and loss of power to accessories or critical systems. Estimated repair cost: $300 - $1,500+.

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2021 Chevrolet Tahoe Maintenance guide

Name: Maintenance dataset for 2021 Chevrolet Tahoe
Creator: Carfocal

v1.0Updated May 30, 2026Ethan Miller4 Sources Analyzed8 Critical Recalls

MAINTENANCE SUMMARY

The 2021 Chevrolet Tahoe, with a 'Below Average' reliability verdict, requires diligent maintenance due to significant concerns in its engine and fuel/propulsion systems. Owners should prioritize inspections for potential lifter failures and fuel pump control module issues, which are frequently reported at low mileage.

View Critical Issue: Connecting Rod Bearing Wear (6.2L V8)

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Reliability Score

Est. Annual Maintenance Cost

$400 - $700

TSBs & Recalls

144 TSBs | 23 Recalls

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Key Takeaways

Prioritize maintenance for the engine and fuel system due to frequent issues.
Be vigilant for symptoms of lifter failure and fuel pump control module problems.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance