The Walker Products Engine Oil Pressure Switch (part number 256-1003) is a direct-fit replacement for 2009-2020 Buick, Cadillac, Chevrolet, and GMC vehicles with 1.4L, 5.3L, and 3.6L 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.
- Prevents Engine Damage:Â Helps protect vital components by alerting the driver or system to low oil pressure conditions.
- Exact OE Fit: Installs directly in the factory location using original threads and connectors—no modifications required.
- Engineered for Harsh Conditions:Â Built to resist high temperatures, oil exposure, and vibration in demanding engine environments.
- Monitors Oil Pressure Levels:Â Activates dashboard warning or ECU input when oil pressure falls below safe operating thresholds.
Specifications:
| Number of Terminals | 3 |
| Connector Type | Blade Pin |
| Connector Gender | Male |
| Terminal Gender | Female |
Fits: 2009-2020 Buick, Cadillac, Chevrolet, GMC, and Hummer models including Encore, LaCrosse, Regal Sportback, ATS, CT6, CTS, Escalade, Escalade ESV and more — 1.4L, 5.3L, and 3.6L 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: VEMO V51-73-0108, OSSCA 38291, Wells PS690, Dorman 926041, SMP PS508, SMP PS-508, BWD S4521, Saab 12621234 and 8 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.
