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Home >> GMC >> 1990 >> Forward Control 3.9 L >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Servicing - A/T >> Lubrication >> Checking Fluid Level >> Notes

Checking Fluid Level: Notes

NOTE: Vehicle must be at normal operating temperature when checking fluid level. One pint of fluid raises level from ADD to FULL mark on dipstick in a hot transmission. DO NOT  overfill.