FUEL STARVATION W/NOSE PARKED DOWN - 1/4 TANK FUEL

MODELS AFFECTED: 1985-87 CENTURYS WITH 3.8L PFI ENGINES (VIN CODE 3) 1987 CENTURYS WITH THE 2.8L MPFI ENGINE (VIN CODE W)

Some 1985-87 Centurys equipped with either 2.8L MPFI or 3.8L MPFI or SFI V-6 engines, may exhibit a no-start condition when parked in a nose down attitude of greater than 15 degrees with less than a quarter tank of fuel.

This condition may be caused by air/fuel vapor ingestion through the vapor rejection port of the fuel pump resulting in fuel starvation.

Vehicles exhibiting this condition may be repaired by installation of an in-tank fuel pump that incorporates usage of a vapor rejection port with an umbrella check valve.

Service kits which include pumps with this feature, are noted below by applicable model year and are available from GMSPO.

MODEL YEAR PART NUMBER ---------- ----------- 1985-86 25115689

1987 Coupes/Sedans 25115465 (Wagons are not involved)

WARRANTY INFORMATION

Labor Operation Number: T5138

Labor Time: 0.9 Hours

Trouble Code: 92

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.