GM GENUINE PARTS Engine Oil Pressure Sensor D1818A (19244505) Direct-Fit OEM Replacement, Factory-Calibrated

This GM Genuine Parts oil pressure sensor is manufactured and validated by engineers who design components for Chevrolet, Buick, GMC, and Cadillac vehicles. Built to the same specifications used in original assembly, the D1818A sensor helps maintain reliable oil-pressure monitoring, engine protection strategies, and dashboard accuracy. It’s a direct-fit part intended to replace worn or faulty sensors without modification.

How does this sensor ensure correct oil pressure readings?

The sensor converts mechanical oil pressure into an electrical signal the vehicle’s computer and gauge can interpret. It’s calibrated to GM tolerances so the output matches factory expectations, helping avoid false low-pressure warnings or erratic gauge behavior. Durable internals and precise electrical characteristics reduce drift over time.

• Factory-calibrated signal output matched to GM vehicle systems
• Sealed housing to resist oil contamination and leakage
• Electrical connector compatible with original wiring harness
• Materials chosen for thermal and chemical resistance

Will this fit my vehicle and install easily?

GM Genuine Parts sensors are designed as direct replacements for the original equipment on supported GM models. The D1818A (19244505) uses the correct threads, electrical connector, and physical dimensions to install without modifications. Typical installation is straightforward for a technician or experienced DIYer with basic tools.

• Direct-fit design matches OE threads and mounting location
• Compatible electrical connector prevents rewiring
• No programming typically required when replacing a like-for-like part
• Backed by GM validation for fit and function

What are the durability and quality advantages of choosing GM Genuine Parts?

These sensors are engineered and tested to meet GM’s in-house standards rather than generic aftermarket specs. That means the D1818A undergoes environmental, vibration, and electrical tests representative of real-world service conditions. Choosing a GM Genuine part helps maintain original-system performance and long-term reliability.

• Built and validated by GM engineers for consistent performance
• Tested for vibration, temperature extremes, and fluid exposure
• Manufacturing updates reflect modern materials and processes
• May appear as former ACDelco GM Original Equipment (OE)

How can I tell when the oil pressure sensor needs replacement?

Symptoms that suggest a failing sensor include intermittent or incorrect oil pressure readings, a persistent oil pressure warning light, or diagnostic trouble codes related to sensor performance. Replacing the sensor is often the correct remedy when wiring and oil passages check out normal during diagnosis. Always follow recommended diagnostic steps before replacing parts.

• Erratic or stuck oil pressure gauge readings on the dash
• Oil pressure warning lamp that won’t reset after checks
• Related trouble codes pulled from the vehicle’s computer
• Sensor replacement after confirming wiring and oil passages are OK

Who is this for: The GM Genuine Parts D1818A (19244505) oil pressure sensor is intended for owners, mechanics, and fleet managers who want an OE-quality replacement for compatible Chevrolet, Buick, GMC, and Cadillac models. It’s aimed at anyone seeking a direct-fit, manufacturer-validated sensor to restore accurate oil pressure monitoring and preserve original system behavior.