Walker Products Engine Oil Pressure Switch P/N:256-1002

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$31.99
MPN: 256-1002
Item Package Code: EA
Part Has Core (Y/N): N
Item Package Quantity: 1
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Walker Products Engine Oil Pressure Switch P/N:256-1002
Walker Products Engine Oil Pressure Switch P/N:256-1002
$31.99

Keep an eye on engine lubrication pressure with the Walker Products Engine Oil Pressure Switch 256-1002, an OE-replacement switch that monitors oil pressure and signals the dashboard light or ECU when levels fall below safe operating thresholds. It drops in as a direct-fit replacement across a wide GM-family list, including the 2005-2008 Buick LaCrosse, 2004-2015 Cadillac CTS, 2010-2015 Chevrolet Camaro, 2006-2011 Chevrolet Impala, 2006-2010 Pontiac G6, 2006-2009 Saab 9-3 and 2008-2010 Saturn VUE — see the Buyer's Guide tab for the full application and engine list.

  • Monitors oil pressure levels: Activates the dashboard warning or ECU input when oil pressure drops below safe limits.
  • OE-replacement calibration: Matched to original specs for pressure activation point, thread pitch, and electrical response.
  • Engineered for harsh conditions: Built with high-temperature and oil-resistant materials to resist heat, oil exposure, and vibration.
  • Exact OE fit: Threads directly into the factory location and connects to the existing wiring with no modifications.

If a failed pressure switch is behind a flickering oil light, false warnings, or a missing signal, this unit replaces it to restore early low-pressure warning within the lubrication system.

Interchange: 82.2339 · PS-425 · V51-72-0295
822339 · PS425 · V51720295 · D1800C · 1S8818 · S4324 · 12674782 · 80019 · 12570798 · 12621649 · 12621659 · 7532133 · 72133 · 34174 · PS425T · 3OPS0027 · PS629

This part cross-references / interchanges with the following part numbers:

D1800C, 1S8818, S4324, 12674782, 82.2339, 80019, 12570798, 12621649, 12621659, 7532133, 72133, 34174, PS-425, PS425, PS425T, 3OPS0027, V51-72-0295, PS629

Frequently Asked Questions

What does the Walker 256-1002 oil pressure switch do?

It monitors engine oil pressure and activates the dashboard warning light or feeds a signal to the ECU when pressure falls below safe operating thresholds, providing an early low-oil-pressure warning.

How do I know if my oil pressure switch is failing?

Common signs include an oil light that flickers, false warnings, or no signal at all under actual low-pressure conditions. Diagnose the cause before replacing, as low pressure can have other sources.

Will this switch fit my vehicle?

It's a direct-fit replacement for a wide GM-family list, including select Buick, Cadillac, Chevrolet, Pontiac, Saab and Saturn models. Check the Buyer's Guide tab to confirm your exact year, make and model.

Where does the 256-1002 install?

It threads directly into the factory location and connects to the existing wiring with no modifications. Refer to your vehicle service information for the exact port location and torque.

Is this an OE-replacement part?

Yes. It's an OE-replacement switch calibrated to match original specs for pressure activation point, thread pitch, and electrical response, and built with high-temperature, oil-resistant materials.