VARIABLE FUEL SENDER AND PUMP (SERVICE PARTS INFORMATION)

SUBJECT: VARIABLE FUEL SENDER AND PUMP SERVICE PART INFORMATION

MODEL and YEAR: 1991-92 LUMINA WITH 3.1L ENGINE

THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 92-160A-6C, DATED JUNE 1992. THE BULLETIN NUMBER HAS BEEN CORRECTED. ALL COPIES OF 92-160A-6C SHOULD BE DISCARDED.

This bulletin is being issued to provide information pertaining to Fuel Level Sender, Pump and related component service part availability for 1991-92 variable fuel (RPO N14) Chevrolet W-cars.

Part Description Part Numbers ----------------- ------------ 1991 1992 ---- ---- Fuel Level Sender and Pump Asm. 25028212 N/A (Includes Pulsator, Strainer and O-Ring)

Fuel Level Sender N/A 25028518 (Includes O-Ring)

Fuel Pump 25117203 25117203 (Includes O-Ring)

Pulsator 25029526 25029526

Strainer 25121637 25121637

O-Ring 10152293 10152293

IMPORTANT: In cases where the fuel pump strainer is contaminated with rust, dirt, slime or other fuel contaminants - change only the pump strainer. The fuel pump should not require changing.

However, in cases where diagnosis has led to a fuel pump change or removal from sender due to an inoperative pump, low fuel pressure or other fuel pump conditions, it is always necessary to replace the strainer at the same time, when replacing or reinstalling the pump.

CAUTION:

-------- - A by-product of methanol engine exhaust is formaldehyde. Exposure to formaldehyde can cause burning of the eyes, nose and throat and even death. Formaldehyde gives off sharp odors you should notice before it becomes harmful.

- Methanol is a poison. It can cause head aches, blindness, and even death. Methanol can enter your body through your skin much faster than gasoline will. Drinking only a mouthful of methanol can cause death. When you are around methanol:

- In closed, or nearly closed spaces, methanol fuel is easier to ignite than gasoline. All flame and sparks must be kept away from methanol fuel and no live electrical equipment should ever be connected in fuel tanks containing any amount of fuel.

- Avoid spills. If it gets on you, wash your skin right away. If methanol spills on your clothing, change clothes and wash your skin immediately.

- Never try to siphon methanol by mouth.

- Never use it for cleaning.

- Never let anyone drink it.

- Don't breathe the vapor from methanol. Breathing it over a long time also can cause blindness and death.

- Always wear a face shield, heavy rubber gloves and heavy rubber apron.

- Always work in a well ventilated area.

Parts are currently available from GMSPO.

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.