ENGINE OIL LEAK-FRT CRANKSHAFT SEAL AREA-REPLACE OIL SEAL. Saturn Saturn 1991

For 1990-2009 cars

# ENGINE OIL LEAK-FRT CRANKSHAFT SEAL AREA-REPLACE OIL SEAL

#### SUBJECT: Engine Oil Leak From Front Crankshaft Seal Area (Replace Crankshaft Front Oil Seal, and Damper [LLO Engine] or Pulley Assembly [LKO Engine])

#### MODELS AFFECTED: All 1991 and 1992 vehicles built before, and including VIN NZ143903

#### CONDITION:

Oil may leak from front crankshaft seal area.

#### CAUSE:

Crankshaft pulley on SOHC (LKO) engines or crankshaft damper on DOHC (LLO) engines may have localized porosity, allowing oil to leak.

CORRECTIVE ACTION: Refer to "Engine Oil Leak Diagnosis" in the "Engine Diagnostics" section of the "Engine -Mechanical Service Manual." If an oil leak is apparent at the front crankshaft seal area and the vehicle was built before, and including VIN NZ143903 replace the crankshaft front oil seal and the damper assembly on the DOHC (LLO) engine or the pulley assembly on the SOHC (LKO) engine.

#### NOTE: Pulleys and dampers installed on these vehicles may have localized porosity. Due to the difficulty in determining if an oil leak is caused by the front seal, or pulley/damper, it is recommended that both the crankshaft front oil seal and pulley/damper be replaced.

Refer to "Front and Rear Crankshaft Oil Seals Replacement" in the "Engine Block" section of the "Engine-Mechanical Service Manual" for replacement procedures.

#### NOTE: Pulleys and dampers on vehicles built after VIN NZ143903 have been leak tested and have additional pre-machined stock to eliminate porosity during the casting process.

PARTS REQUIREMENTS: 21000707 Crankshaft Front Oil Seal Assembly 21000756 Crankshaft Pulley (SOHC [LKO] Engine) 21006009 Crankshaft Damper Assembly (DOHC [LLO] Engine)

CLAIM INFORMATION: To receive credit for this repair, submit a claim through the Saturn Dealer System as follows: Labor Case Operation Type Description Code Time ---- ----------- --------- ---- VW Replace Crankshaft Front Oil J0740 0.8 hrs Seal Assembly and Damper Assembly, or Pulley Assembly

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.