Info - Fuel Sender Seal Service Parts Information. Cadillac Seville 1998

Subject:

Fuel Sender Seal Service Parts Information

Models:

1998-1999 Buick Riviera

1998-2000 Buick Park Avenue

2000 Buick LeSabre

1998-2000 Cadillac Seville

2000 Cadillac DeVille

1998-1999 Oldsmobile Aurora

2000 Pontiac Bonneville

Due to a design change for 2000 MY vehicles, there may be some confusion as to the correct fuel sender seal for the above mentioned vehicles. When ordering a replacement part, use the following figures and tables to assist in identifying the proper fuel sender seal replacement part.

In addition, the applicable fuel tank assembly part numbers are provided. The part numbers are molded into the bottom LH rear corner of the tank assembly.

H-Style Seal -- P/N 25712454

For use on fuel tank assembly, P/N 25712455.

Figure 1


(1)	Fuel Sender
(2)	Fuel Tank Surface with outer retaining wall to hold H-Style seal in place.

Use the H-style seal, P/N 25712454, for vehicles built AFTER and INCLUDING the following VIN breakpoints:

Year/Model	VIN Breakpoint
2000 Buick Park Avenue w/Engine RPO L36	Y4120965
2000 Buick Park Avenue w/Engine RPO L67	Y4120915
2000 Buick LeSabre w/Engine RPO L36	Y4120967
2000 Buick LeSabre w/Engine RPO L36	YU145190
2000 Cadillac DeVille	YU145381
2000 Cadillac Seville	YU145369
2000 Pontiac Bonneville w/Engine RPO L36	Y4120966
2000 Pontiac Bonneville w/Engine RPO L67	Y4120924

The H-style seal is to be used ONLY on vehicles that have an existing H-style seal installed and a fuel tank with a retaining wall as shown in Figure 1.

Service Seal -- P/N 25721332

For use on fuel tank assemblies, P/N's 25696212 and 25641811.

Figure 2


(3)	Fuel Sender
(4)	Fuel Tank
(5)	Service Seal

For vehicles listed below that have an existing O-ring style seal installed, the O-ring style seal has been cancelled and a new service seal, P/N 25721332, is now available as the replacement part.

Use the service seal, P/N 25721332, for vehicles built BEFORE the following VIN breakpoints:

Year/Model	VIN Breakpoint
2000 Buick Park Avenue w/Engine RPO L36	Y4120965
2000 Buick Park Avenue w/Engine RPO L67	Y4120915
2000 Buick LeSabre w/Engine RPO L36	Y4120967
2000 Buick LeSabre w/Engine RPO L36	YU145190
2000 Cadillac DeVille	YU145381
2000 Cadillac Seville	YU145369
2000 Pontiac Bonneville w/Engine RPO L36	Y4120966
2000 Pontiac Bonneville w/Engine RPO L67	Y4120924

The service seal is to be used ONLY on vehicles that have an existing O-ring seal installed.

In addition use the service seal, P/N 25721332, for the following vehicles:

Year/Model
1998-1999 Buick Park Avenue, Riviera
1998-1999 Cadillac Seville
1998-1999 Oldsmobile Aurora

Important:

•	The H-style seal is NOT interchangeable with the O-ring style seal or the service seal.

•	It is essential that the repair be verified in order to reduce customer returns. After the seal replacement is complete, use the J 41413 EVAP Pressure/Purge Diagnostic Station.

•

It is important to use the required tools listed in the Service Manuals. Special tools, such as the J 41413 EVAP Pressure/Purge Diagnostic Station for a clean, dry, low pressure gas source; the J 39765 Fuel Sender Lock Nut Wrench and the J 41416 Ultrasonic Leak Detector, are needed in order to avoid unnecessary component replacement.

Parts Information

Part Number	Description
25712454	Seal, Fuel Sender (H-Style)
25721332	Seal, Fuel Sender (Service)

Parts are expected to be available from GMSPO, 5/22/00.