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2025 GMC SIERRA 2500HD
6.6L V8 L8T•RWD•AUTOMATIC•gas•turbo
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Repairs0Labor990Torque281Fluid18DTC4034Battery2Maintenance0Recalls0
Fluid · Coolant

Coolant

for 2025 GMC Sierra 2500HD 6.6L V8 L8T · RWD
Fluid Type
Dex-Cool 50/50
Spec: GM 6277M
Capacity
28.5qt
26.96 L
Drain & Refill
24 qt
22.7 L
Change Interval
150,000 mi
241,350 km
Data quality
Book-style estimate
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Notes

Long-life OAT coolant. Total capacity varies with heater and configuration

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Other fluid systems on this vehicle

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