GM Genuine Parts 25203477 MAP Sensor – OE Engine Management

Overview

GM Genuine Parts 25203477 Manifold Absolute Pressure MAP Sensor is an OE grade component designed specifically for GM vehicles. It is engineered, tested, and backed by General Motors to integrate with the vehicle’s fuel and engine management system. The MAP sensor provides critical input to the engine control module, working alongside the throttle position sensor to estimate how much air enters the engine, helping the system determine the appropriate amount of fuel for efficient combustion. This part reflects GM's commitment to true OE parts that are used during production or validated by GM for use in Chevrolet, Buick, GMC, or Cadillac vehicles. In some cases, GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment OE parts, reflecting the brand's enduring heritage.

Key benefits

• Sends signals to the engine controls for optimal engine performance
• Designed to adjust engine performance to various altitudes
• Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment OE
• GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
• GM regularly updates production and service part designs to integrate new materials and technologies

Why GM Genuine Parts MAP Sensor

• OE grade quality backed by GM and validated for GM vehicles
• Trusted compatibility with Chevrolet, Buick, GMC, and Cadillac lineups
• Designed to adapt as driving conditions change and altitude varies
• Ongoing design updates incorporate newer materials and technologies for longevity

Real world usage and expectations

Replacing a MAP sensor can contribute to smoother idle, steadier throttle response, and more predictable engine behavior as conditions change. Results vary by vehicle and driving pattern, and this MAP sensor is intended to support reliable engine management as part of routine maintenance.

Compatibility and care

GM Genuine Parts are true OE parts installed during production or validated by GM for Chevrolet, Buick, GMC and Cadillac models. GM periodically updates parts designs to incorporate new materials and technologies, helping ensure ongoing compatibility and performance.

Installation notes

Before replacing, confirm vehicle compatibility and inspect related seals and connectors. Follow the service manual for torque specs and connector alignment to ensure the sensor delivers accurate readings and maintains a clean signal to the engine control module.