The Walker Products Engine Oil Pressure Switch (part number 256-1001) is a direct-fit replacement for 1997-2009 Buick, Cadillac, Chevrolet, and GMC vehicles with 5.3L, 4.2L, and 5.7L engines. Walker Products Oil Pressure Switches are OE Replacement components that monitor engine lubrication pressure to protect against low-oil conditions and prevent engine damage.
Features:
- OE Replacement Calibration:Â Matches original specs for pressure activation point, thread pitch, and electrical response.
- Monitors Oil Pressure Levels:Â Activates dashboard warning or ECU input when oil pressure falls below safe operating thresholds.
- Prevents Engine Damage:Â Helps protect vital components by alerting the driver or system to low oil pressure conditions.
- Engineered for Harsh Conditions:Â Built to resist high temperatures, oil exposure, and vibration in demanding engine environments.
- Exact OE Fit: Installs directly in the factory location using original threads and connectors—no modifications required.
Specifications:
| Number of Terminals | 3 |
| Connector Type | Blade Pin |
| Connector Shape | Circle |
| Connector Gender | Male |
| Terminal Gender | Female |
| Product Grade | Standard Replacement |
Fits: 1997-2009 Buick, Cadillac, Chevrolet, GMC, and Hummer models including LaCrosse, Rainier, CTS, Escalade, Escalade ESV, Escalade EXT, Avalanche, Avalanche 1500 and more — 5.3L, 4.2L, and 5.7L engines.
Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.
Interchanges With: Forecast 80014, VEMO V51-73-0106, OSSCA 16283, Hummer 12677836, General Motors 12556117, General Motors 12559780, General Motors 12562230, General Motors 12569323 and 23 more
WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm.
