Holstein 2OPS0027 Engine Oil Pressure Switch

Engine Oil Pressure Switch for GM Applications

Holstein Parts 2OPS0027 is an engine oil pressure switch for select Chevrolet, GMC, Buick, and Pontiac vehicles. It is built for applications that use a gauge or light-based oil pressure indication, helping restore accurate oil pressure signal output to the instrument cluster.

Key Features

• Engine oil pressure switch for GM passenger and truck applications
• Supports gauge and light-equipped configurations where listed
• Direct-fit replacement for select Chevrolet Silverado 1500, GMC Sierra 1500, and Express/Savana models
• Also used on Buick LeSabre, Buick Park Avenue, and Pontiac Bonneville applications with gauge
• Holstein Parts 2OPS0027 cross-references Dayco 80001 and Global Parts Distributors LLC 2561008

Detailed Description

Holstein Parts 2OPS0027 is an engine oil pressure switch used to monitor oil pressure and send the proper signal to the vehicle’s warning system or gauge. This part number is listed for a wide range of GM vehicles, including Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Express 1500, GMC Savana 1500, and related applications. It also appears on Buick LeSabre, Buick Park Avenue, and Pontiac Bonneville models with gauge-equipped systems. This part cross-references Dayco 80001 for the same application.

What This Part Helps Address

• Inaccurate oil pressure gauge readings
• Oil pressure warning light staying on or not responding correctly
• Intermittent oil pressure signal to the cluster
• Fault codes or drivability concerns related to oil pressure input
• Replacement needs on aging GM engine management systems

Installation Notes and Tips

• Verify the connector style and terminal count against the vehicle listing before installation.
• Confirm whether the vehicle uses a gauge or light configuration, since fitment varies by application.
• Inspect the connector, wiring, and sealing surfaces during replacement to help ensure a stable electrical connection.
• Use the exact year, make, and model listing for fitment confirmation on Chevrolet Silverado 1500, GMC Sierra 1500, and Chevrolet Express 1500 applications.

Quality Assurance

Holstein Parts 2OPS0027 is cataloged as an OE-style replacement engine oil pressure switch for the listed GM applications. It is identified under Holstein Parts and supported by published interchange references for fitment verification.