Yongtoparts Mass Air Flow Sensor MAF for GM Vehicles — 20787043 Direct-Replacement, Thermal-Film Accuracy

The Yongtoparts 20787043 mass air flow (MAF) sensor accurately measures engine intake air and delivers calibrated data to the ECU for compatible GM vehicles.

This replacement MAF meter is engineered to match OE fit and electrical characteristics for many Chevrolet, Cadillac, Buick and GMC models from the 2012–2021 model years. It uses a sensitive thermal film sensing element to monitor airflow, and is sold as a direct-replacement alternative for several OEM part numbers. The unit is intended to restore correct air-fuel calculations after a failing factory sensor, helping resolve drivability issues tied to incorrect intake measurements.

How does this MAF sensor help resolve rough idle or poor acceleration?

A malfunctioning MAF sensor can send incorrect intake air data to the engine control unit, which may cause uneven idling or sluggish throttle response. Replacing a degraded sensor with a properly calibrated unit like the Yongtoparts 20787043 helps the ECU reestablish accurate fuel trims and ignition timing.

• Thermal film element provides fast, stable airflow readings.
• Direct-replacement electrical connector for plug-and-play installation.
• Restores correct air-fuel ratio calculation and drivability.

Which vehicles and OEM numbers does this part fit?

This MAF sensor covers a broad list of GM applications across Chevrolet, Cadillac, Buick and GMC lines from approximately 2012 through 2021. It replaces multiple OE references so you can match by part number or vehicle compatibility before ordering.

• Replaces OE numbers: 20787043, 23118170, 23262343, 23366103 and related AFH70M variants.
• Fits models including Malibu, Equinox, Impala, Silverado, Tahoe, Traverse, Camaro, Escalade, Enclave, Acadia, Yukon, Terrain, and more.
• Check vehicle year and engine code to confirm exact compatibility.

What should I expect during installation and post-install checks?

Installation is typically straightforward: disconnect the battery, unplug the old sensor, remove mounting hardware, swap in the new sensor and reconnect the wiring. After installation, clear the ECU fault codes and perform a brief drive cycle to allow the engine computer to relearn airflow parameters.

• Simple bolt-on replacement with OE-style connector—no special tools required for most models.
• Recommended to inspect intake ducting and air filter to prevent premature sensor fouling.
• Clear stored diagnostic trouble codes and verify idle and throttle response on a test drive.

What performance and support assurances come with this MAF meter?

The sensor uses a high-sensitivity thermal element designed to provide reliable voltage signals to the ECU under normal operating conditions. Yongtoparts backs the unit with a one-year after-sales warranty and customer support to answer installation or fitment questions.

• Engineered thermal film sensor for consistent airflow measurement.
• One-year after-sale service and customer support response within 24 hours.
• Manufactured to meet fit and function expectations for listed GM applications.

Who is this for: Technicians, DIY mechanics and fleet managers seeking an affordable, direct-replacement MAF sensor for compatible Chevrolet, Cadillac, Buick and GMC vehicles. If you are diagnosing erratic idle, check-engine lights related to airflow, or poor fuel economy on a listed model, this Yongtoparts unit is intended as a like-for-like replacement to restore correct intake measurement and support normal engine management operation.