Vehicle recall 94V164000 · September 1, 1994

1992-1994 AM General Hummer

The oil pressure switch which controls the power to the electric fuel pump can fail.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

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.

Recall details

NHTSA campaign: 94V164000
Reported to NHTSA: September 1, 1994
Filed by: AM GENERAL CORPORATION
Owner notification: December 12, 1994
Vehicles potentially affected: 2,300
Initiated by: the manufacturer
Components: Fuel system, gasoline › Delivery › Hoses, lines/piping, and fittings

Recall 94V164000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

AM General Hummer (1992-1994): 1994, 1993, 1992

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