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2025 GMC SIERRA 3500HD
6.6L V8 Duramax Diesel•4WD•AUTOMATIC•diesel•turbo
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Repairs0Labor526Torque144Fluid9DTC821Battery1Maintenance0Recalls0
Fluid · Coolant

Coolant

for 2025 GMC Sierra 3500HD 6.6L V8 Duramax Diesel · 4WD
Fluid Type
Dex-Cool 50/50
Spec: GM 6277M, GM DEX-COOL
Capacity
28.5qt
26.96 L
Drain & Refill
23 qt
21.76 L
Change Interval
150,000 mi
241,350 km

Notes

ACDelco Dex-Cool orange extended-life coolant. First change 150k miles, then every 5 years/150k

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Other fluid systems on this vehicle

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