HomeTransmission > SensorsStandard Ignition SC803 Automatic Transmission Output Shaft Speed Sensor
Part #: SC803

Standard Ignition SC803 Automatic Transmission Output Shaft Speed Sensor

⚙️ 24 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Buick, Chevrolet, and GMC, Cruze, Encore GX, Equinox, Malibu, Terrain, and Trailblazer
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Reliable Automatic Transmission Output Shaft Speed Sensor

The Standard Ignition SC803 Automatic Transmission Output Shaft Speed Sensor is designed to provide accurate speed readings for your vehicle's transmission system. Engineered for compatibility with select Buick, Chevrolet, and GMC models, this sensor ensures precise data transmission to your vehicle’s control module.

  • Bolt mount attachment method for secure installation
  • Durable black finish for corrosion resistance
  • Single female square plug-in connector for reliable electrical connection
  • Two male blade terminals for consistent signal transmission
  • Designed for transmission mount location with one bolt hole
  • New, not remanufactured, ensuring original performance

Product Details and Specifications

The SC803 sensor from Standard Ignition features a bolt mount design with one bolt hole, allowing for straightforward installation on the transmission mount. Its black finish provides durability against environmental factors. The sensor includes a single female connector with a square shape and plug-in type, facilitating a secure and stable connection. Internally, it has two male blade terminals that maintain consistent electrical contact. This sensor does not include a dust shield, mounting brackets, or hardware, so ensure your vehicle’s existing components are compatible for installation.

Compatible Vehicles and Applications

This Automatic Transmission Output Shaft Speed Sensor is compatible with various Buick, Chevrolet, and GMC models, including the Buick Encore GX, Chevrolet Cruze, Equinox, Malibu, Terrain, and Trailblazer. The SC803 sensor is specifically designed to meet the requirements of these vehicles’ transmission systems, providing accurate output shaft speed data essential for proper transmission operation.

Common Issues Addressed by the SC803 Sensor

  • Erratic or inaccurate transmission speed readings
  • Transmission shifting problems or delayed gear engagement
  • Check engine light triggered by transmission speed sensor faults
  • Transmission slipping or failure to shift properly
  • Diagnostic trouble codes related to output shaft speed sensor malfunction

Installation Notes and Tips

Installation requires removal of the old sensor from the transmission mount and securing the new SC803 sensor using the single bolt hole. Ensure the connector is properly aligned and fully engaged to avoid electrical issues. Since mounting hardware is not included, retain or source the appropriate bolt for your vehicle. Verify the sensor’s orientation and connection before finalizing installation to ensure accurate speed readings.

Quality Assurance and Warranty

Standard Ignition manufactures the SC803 sensor as a new part, adhering to strict quality standards to ensure reliable performance. While specific warranty details are not provided here, Standard Ignition parts typically come with a limited warranty covering defects in materials and workmanship. Consult your supplier or Standard Ignition documentation for exact warranty terms.

BrandStandard Ignition
Part NumberSC803
Attachment MethodBolt mount
Color/FinishBlack
Connector GenderFemale
Connector Quantity1
Connector ShapeSquare
Connector TypePlug in
Dust Shield IncludedNo
Hardware IncludedNo
Mounting Bracket(s) IncludedNo
Mounting Hardware IncludedNo
Mounting LocationTrans mount
Mounting TypeBolt mount
New or RemanNew
Number of Bolt Holes1
Terminal GenderMale
Terminal Quantity2
Terminal TypeBlade

This part fits 24 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2026BuickEncore GXN/A
2026ChevroletEquinoxN/A
2026ChevroletTrailblazerN/A
2026GMCTerrainN/A
2025BuickEncore GXN/A
2025ChevroletEquinoxN/A
2025ChevroletTrailblazerN/A
2025GMCTerrainN/A
2024BuickEncore GXN/A
2024ChevroletMalibu1.5LL4N/A
2024ChevroletTrailblazerN/A
2023BuickEncore GXN/A
2023ChevroletMalibu1.5LL4N/A
2023ChevroletTrailblazerN/A
2022BuickEncore GXN/A
2022ChevroletMalibu1.5LL4N/A
2022ChevroletTrailblazerN/A
2021BuickEncore GXN/A
2021ChevroletMalibu1.5LL4N/A
2021ChevroletTrailblazerN/A
2020BuickEncore GXN/A
2020ChevroletMalibu1.5LL4N/A
2019ChevroletCruze1.4LL4N/A
2019ChevroletMalibu1.5LL4N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

24291277SN8505VSS1337

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.