The defect
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.
The risk
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.
The 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.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| AM General Hummer | 1992, 1993, 1994 |
Components: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| AM General Hummer | 1992 | 1 | 3 |
| AM General Hummer | 1993 | 2 | 3 |
| AM General Hummer | 1994 | 2 | 3 |
Other fuel system, gasoline recalls in 1994
30 of the 244 recall campaigns reported to NHTSA in 1994 concerned the fuel system, gasoline; AM GENERAL CORPORATION filed 53 campaigns in all.
| 94V241000 5 Dec 1994 | WAYNE WHEELED VEHICLES |
| 94V210000 25 Oct 1994 | GENERAL MOTORS CORP. |
| 94V203000 18 Oct 1994 | FORD MOTOR COMPANY |
| 94V186000 4 Oct 1994 | FORD MOTOR COMPANY |
| 94V188000 4 Oct 1994 | GENERAL MOTORS CORP. |
| 94V187000 4 Oct 1994 | GENERAL MOTORS CORP. |
| 94V184000 29 Sept 1994 | FORD MOTOR COMPANY |
| 94V162000 1 Sept 1994 | AM GENERAL CORPORATION |
NHTSA recalls (public domain) · all recalls of 1994