For 1990-2009 cars

# ENGINE OIL LEVEL OPERATING RANGE

#### VEHICLES AFFECTED: 1984 T, J, X, A, F, B And Y Series Passenger Cars And 'C-K-G' 10, 20, 30, P-20, P-30 And 'S' - 'T' Trucks

Engine oil levels for the subject vehicles are specified at the factory to be between 6mm (1/4 in.) below the 'full' mark and the full mark on the oil level indicator. Topping off the oil level on new vehicles to meet the 'full' mark when the oil level is at or above this minimum specification is not required and should not be charged to warranty.

The safe operating range for engine oil level is from the 'full' mark to the add mark.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.