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2021 GMC SIERRA 1500
3.0L I6 Duramax Diesel•RWD•AUTOMATIC•diesel•turbo
7 active safety recalls on this vehicle — view recalls
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Repairs0Labor508Torque4431Fluid8DTC1103Battery1Maintenance0Recalls7
Fluid · Coolant

Coolant

for 2021 GMC Sierra 1500 3.0L I6 Duramax Diesel · RWD
Fluid Type
Dex-Cool 50/50
Spec: GM6277M or DEX-COOL
Capacity
17qt
16.08 L
Drain & Refill
14 qt
13.24 L
Change Interval
150,000 mi
241,350 km

Notes

Extended life orange coolant. First change at 150k miles, then every 5 years/150k miles. Includes engine and auxiliary systems.

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Other fluid systems on this vehicle

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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