Fluid · Coolant
Coolant
for 2024 Chevrolet Express 6.6L V8 Duramax Diesel · RWD
Fluid Type
Dex-Cool orange 50/50 premix
Spec: GM DEX-COOL (GM 6277M or GM 88861803)
Capacity
21qt
19.87 L
Drain & Refill
18 qt
17.03 L
Change Interval
150,000 mi
241,350 km
Notes
First change at 150k miles, then every 5 years/150k miles thereafter. Diesel engines typically hold more coolant
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