MIN. ACCEPTABLE OIL LEVELS TEST METHODS

THE FOLLOWING CHART PROVIDES A GUIDE FOR MINIMUM ACCEPTABLE OIL LEVELS 'AS RECEIVED' FROM THE FACTORY. ONLY THOSE COMPONENTS WHICH HAVE LEVELS LESS THAN INDICATED BELOW SHOULD HAVE ADDITIONAL OIL INSTALLED. ENGINE - FULL MARK TO 6MM (.24 IN.) BELOW FULL MARK. TRANSMISSION A) AUTOMATIC - WITH ENGINE IDLING, TRANSMISSION SELECTOR IN 'PARK' VEHICLE ON A LEVEL SURFACE AND OIL TEMPERATURE BETWEEN 10 TO 38 DEGREES C THE OIL LEVEL ON THE FOLLOWING TRANSMISSIONS SHOULD BE AS INDICATED: 440-T4 TRANSMISSION: OIL LEVEL SHOULD BE IN MIDDLE OF CROSS-HATCH AREA. 125/125C TRANSMISSION: OIL LEVEL SHOULD BE SLIGHTLY ABOVE FULL LEVEL. ALL OTHER TRANSMISSIONS: OIL LEVEL SHOULD BE SLIGHTLY BELOW ADD LEVEL. IF OIL LEVEL GAUGE HAS DIMPLES BELOW ADD MARK, OIL LEVEL SHOULD BE BETWEEN THESE TWO DIMPLES. B) MANUAL 1) LOWER EDGE OF INSPECTION PLUG HOLE ON REAR WHEEL DRIVE VEHICLES. 2) BETWEEN COLD LEVEL RANGE DIMPLES OR AT COLD LEVEL MARK ON FRONT WHEEL DRIVE VEHICLES. DIFFERENTIAL - LOWER EDGE OF INSPECTION PLUG HOLE TO 9.5MM (.37 IN.) BELOW LOWER EDGE OF INSPECTION PLUG HOLE. TRANSFER CASE - LOWER EDGE OF INSPECTION PLUG HOLE.

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.