LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1987 >> Forward Control 4.8 T, Standard >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Servicing - A/T >> Lubrication >> Checking Fluid Level

Checking Fluid Level

NOTE: One pint of fluid will raise level from "ADD 1 PT." ("ADD") mark to "FULL" mark on dipstick in a hot transmission. DO NOT  overfill.

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, an accurate fluid level cannot be immediately determined. Transmission must cool for about 30 minutes after vehicle is parked, before fluid level is checked.