ENG. WON'T STAY RUNNING MAY HAVE FUEL PRESS. LOSS

Models Affected: 1988 BONNEVILLE WITH 3.8L OR 3800 (CODES 3 OR C)

Models Affected: Some 1988 Bonnevilles built after VIN JW253387 are equipped with a 3.8L or 3800 VIN Codes 3 or C.

Some 1988 Bonneville models were equipped with a turbine style fuel pump which required a strainer/filter with a very high filtration rate to prevent pump damage. This strainer/filter could become restricted and cause a fuel pressure loss when exposed to an excessive accumulation of dust, dirt, and water.

If it has been determined that a 1988 Bonneville which was built after the above listed VIN breakpoint has a fuel pressure loss condition, refer to the identification label codes on the sender harness to identify which style fuel pump is being used (See Figure 1).

Vehicles with a CPD, CPE or CPP fuel pump/sender assembly identification label code, should have the fuel pump and sender assembly replaced with the parts listed below.

NOTE: Both the fuel pump kit and fuel sender kit will need to be installed as a new assembly. Strainer/filter, fuel pumps and fuel senders are not interchangeable with different styles.

Part Description: Part Number: ----------------- ------------ Fuel Sending Unit Kit 25094732 Fuel Pump Kit 25116144

Vehicles with any fuel pump/sender assembly identification label code not listed above, should be further diagnosed using chart A-7 of section 6E3-A of the appropriate 1988 Chassis Service Manual.

Warranty Information:

Use applicable labor operation number and labor time.

Parts are currently available through 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.