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1991 GMC SUBURBAN
7.4L V8•4WD•gas•L19
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor1122Torque282Fluid18DTC0Battery0Maintenance0Recalls2
Fluid · Coolant

Coolant

for 1991 GMC Suburban 7.4L V8 · 4WD
Fluid Type
Ethylene glycol green coolant 50/50
Spec: GM 1899M or equivalent
Capacity
28qt
26.49 L
Drain & Refill
20 qt
18.92 L
Change Interval
30,000 mi
48,270 km

Notes

Big block has larger coolant capacity. Total system capacity with heater

Other fluid systems on this vehicle

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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