Fuel Pump Power Control Module Failure

Failures in the fuel pump power control module can lead to unexpected engine stalling. This issue is also a subject of a critical recall, highlighting its potential impact on drivability and safety. Estimated repair cost: $500 - $1,000.

Electrical System Glitches

Various electrical system issues have been reported, including malfunctioning wipers, door locks, and warning lights. These can range from minor annoyances to more significant functional problems. Estimated repair cost: $200 - $800.

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2021 Chevrolet Suburban Maintenance guide

Name: Maintenance dataset for 2021 Chevrolet Suburban
Creator: Carfocal

v1.0Updated May 30, 2026Ethan Miller4 Sources Analyzed5 Critical Recalls

MAINTENANCE SUMMARY

The 2021 Chevrolet Suburban, with a 'Below Average' reliability verdict, demands diligent maintenance, particularly concerning its 6.2L V8 engine. Owners should prioritize addressing potential lifter, bearing, and crankshaft issues, which are the most frequent and severe complaints, often manifesting as engine noise or complete failure.

View Critical Issue: Engine Internal Component Failure (Lifters, Bearings, Crankshaft)

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Reliability Score

Est. Annual Maintenance Cost

$300 - $500

TSBs & Recalls

114 TSBs | 19 Recalls

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Key Takeaways

The 2021 Chevrolet Suburban has a 'Below Average' reliability verdict.
Engine internal component failures (lifters, bearings, crankshaft) are the most critical and frequent issues.

3 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance