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Home >> GMC >> 1983 >> Forward Control 7.4 W, Standard >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Servicing - A/T >> Lubrication >> Checking Fluid Level

Checking Fluid Level

CAUTION: DO NOT overfill. One pint of fluid will raise level from "ADD 1 PT." to "FULL HOT" mark on dipstick with a hot transmission.

Bring engine and transmission to normal operating temperature. With vehicle parked on a level surface and engine at idle, move selector lever through all positions, ending in "P". Remove dipstick, wipe clean and check fluid level. Fluid level should be between "ADD 1 PINT" ("ADD") and "FULL" marks on dipstick.

If vehicle has been operated for an extended period of time at high speed, in city traffic, or pulling a trailer, and accurate fluid level cannot be immediately determined. Transmission must cool for about 30 minutes after vehicle is parked, before fluid level is checked.