SERVICE INFO. ON FUEL PUMP USAGE - TWO DIFFERENT MODELS. Saturn Saturn 1993

For 1990-2009 cars

# SERVICE INFO. ON FUEL PUMP USAGE - TWO DIFFERENT MODELS

#### SUBJECT: ------- Service Information on Fuel Pump Usages

#### MODELS AFFECTED: -------- All 1993 Saturns

#### PURPOSE:

------- Model year 1993 Saturns use two different fuel pumps; a different one for each engine configuration. If the SOHC (LKO) fuel pump is incorrectly installed on a vehicle with a DOHC (LLO) engine, insufficient fuel pressure will be supplied to the engine, resulting in possible driveability complaints in cold weather. Parts can be visually identified by the label attached to the vent line from the pump.

PARTS REQUIREMENTS: ------------ Part Description Part Number Usage Vent Line Label Color ---------------- ----------- ----- ---------------------

Pump Assembly-Fuel 21006549 LKO Yellow Pump Assembly-Fuel 21006878 LLO White

#### NOTE: ---- Fuel pump assembly (P/N 21006549) is also released to service 1991-1992 vehicles equipped with the SOHC (LKO) engine.

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.