LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1987 >> Forward Control 6.2 J, Standard >> Repair and Diagnosis >> Engine Mechanical >> Engine Cooling Fan >> Cooling System Maintenance >> Refilling
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Cooling System Maintenance: Refilling

To prevent air from being trapped in engine block, engine should be running when refilling cooling system. After system is full, continue running engine until thermostat is open, then recheck fill level. Do not overfill system.