Fluid · Coolant
Coolant
for 2026 Chevrolet Express 6.0L V8 Vortec · RWD
Fluid Type
Dex-Cool 50/50 orange extended life
Spec: GM6277M
Capacity
17qt
16.08 L
Drain & Refill
14 qt
13.24 L
Change Interval
150,000 mi
241,350 km
Notes
First change 150k miles or 5 years, then every 5 years/150k. Larger capacity than 4.3L.
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