AM GENERAL HUMMER 1993: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

General Information

NHTSA Campaign ID Number: 94V164000

Make Model Year
AM GENERAL HUMMER 1993
Date Owners Notified Date Received by ODI Date Added to Database
1994-12-12 1994-09-01 1994-09-19

Production Dates: 1992-07-01 - 1994-06-01

Manufacturers Involved: AM GENERAL LLC

Component: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

Potential Number Of Units Affected: 2300

Report Initiator: MFR MFR Report

Summary

THE OIL PRESSURE SWITCH WHICH CONTROLS THE POWER TO THE ELECTRIC FUEL PUMP CAN FAIL. FAILURE IS DUE TO A MISSING RUBBER SEAL BETWEEN THE SWITCH AND THE WIRING HARNESS. THE MISSING SEAL ALLOWS CONTAMINANTS TO ENTER THE SWITCH CAUSING IT TO FAIL IN THE OPEN OR CLOSED POSITION.

Consequence

IF THE SWITCH FAILS IN THE CLOSED POSITION, THE PUMP WILL CONTINUE TO RUN WHEN THE ENGINE IS OFF, DRAINING THE BATTERY. IF THE SWITCH FAILS IN THE OPEN POSITION IT WILL CAUSE POOR PERFORMANCE AND POSSIBLY STALLING.

Remedy

DEALERS WILL INSPECT THE VEHICLES FOR THE PRESENCE OF THE SEAL. IF THE SEAL IS MISSING, THE SWITCH WILL BE REPLACED AND A NEW SEAL WILL BE INSTALLED.

Notes

SYSTEM: ENGINE.VEHICLE DESCRIPTION: MULTIPURPOSE PASSENGER VEHICLES EQUIPPED WITH 6.2 L OR 6.5 L DIESEL ENGINES.NOTE: IF YOUR VEHICLE IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND THE REMEDY IS NOT PROVIDED FREE OF CHARGE WITHIN A REASONABLE TIME, PLEASE CONTACT AM GENERAL AT 1-219-258-6615. ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.