Fluid · Coolant
Coolant
for 2003 GMC Sierra 2500HD 6.0L V8 Vortec · 4WD
Fluid Type
Dexcool 50/50 orange
Spec: GM6277M
Capacity
18.5qt
17.5 L
Drain & Refill
15 qt
14.19 L
Change Interval
150,000 mi
241,350 km
Data quality
Book-style estimate
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Notes
Long-life orange coolant. First change 150k, then every 5 years
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