Genuine GM 12694431 Lower MAP Sensor 2023–2025 Silverado Sierra L5P Duramax
Genuine GM 12694431 Lower MAP Sensor 2023–2025 Silverado Sierra L5P Duramax is backordered and will ship as soon as it is back in stock.
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Product Care information
Product Care information
At BackWoods Diesel, we ensure all parts are stored in a clean, dry, and temperature-controlled environment to prevent damage. Our team inspects each part for quality and maintains them according to manufacturer guidelines before shipping.
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Delivery and Shipping
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Genuine GM 12694431 Lower MAP Sensor 2023–2025 Silverado Sierra L5P...
Description
Description
The most common MAP (Manifold Absolute Pressure) sensor issue on the L5P Duramax is clogging caused by soot buildup from the EGR (Exhaust Gas Recirculation) system. When this happens, the sensor can no longer provide accurate air pressure readings, leading to a variety of drivability problems.
The MAP sensor is critical in a turbocharged engine, as it measures the air pressure inside the intake manifold to help the ECU determine the correct air-fuel ratio. A faulty or clogged MAP sensor can affect fuel injection timing, boost response, and overall performance.
Symptoms of a Bad or Clogged MAP Sensor:
- Check Engine Light: A failing sensor will often trigger fault codes.
- Rough Idle: Uneven or unstable idling.
- Hesitation or Stalling: Especially noticeable under acceleration.
- Loss of Power: Truck may feel sluggish and underpowered.
- Misfires: More noticeable under heavy load.
- Incorrect Air-Fuel Ratio: Causes rich/lean conditions.
- Poor Fuel Economy: Wasted fuel from inaccurate readings.
Part Number: GM 12694431 (Lower MAP Sensor – diagram #21)
Replaces: GM 55493530
UPC: 193468934878
Note: This is the lower MAP sensor. For the upper MAP sensor (diagram #18), see GM 12707766 (available separately).
Fitment:
2023–2025 Chevrolet Silverado HD 2500/3500 (6.6L L5P Duramax Diesel)
2023–2025 GMC Sierra HD 2500/3500 (6.6L L5P Duramax Diesel)
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