Continental SE1004S Flex Fuel Sensor

Continental SE1004S Flex Fuel Sensor

The Continental SE1004S flex fuel sensor monitors alcohol content in the fuel line and sends that signal to the engine control unit. On supported applications, the ECU uses that data to adjust injection rate and ignition timing based on the actual fuel blend.

Key Features

• Plastic and metal construction for OE-style fit and function
• 12-volt electrical design
• Black finish with male terminal gender
• Specific-fit replacement for selected GM flex-fuel applications
• Genuine Continental OEM part supplied to the vehicle manufacturer

Detailed Description

Continental SE1004S is a specific-fit flex fuel sensor for vehicles that rely on accurate ethanol content measurement for fuel management. It is mounted in the fuel line between the tank and injectors, where it reports the alcohol percentage to the ECU so the engine can respond with the correct fueling and ignition strategy. This part is a direct OE-style replacement for applications such as Chevrolet Silverado 1500, Tahoe, Impala, and Equinox, as well as GMC Sierra 1500, Yukon, Yukon XL, and Terrain. The SE1004S part number is also referenced for Buick, Cadillac, and Chevrolet flex-fuel applications listed in the fitment data.

This part cross-references 5S13811 and 13577429 for the same application.

What It Helps Address

• Incorrect ethanol content readings from a failing sensor
• Hard starting or rough running after fuel blend changes
• Fuel trim and timing issues caused by inaccurate flex-fuel data
• Check engine lights related to fuel composition sensor faults
• Driveability problems on GM flex-fuel vehicles

Installation Notes and Tips

Verify connector style, terminal gender, and vehicle-specific fitment before installation. The SE1004S is a specific-fit sensor, so it should be matched to the exact application listed for your vehicle. Confirm the fuel line routing and sensor location before removal, and inspect the surrounding fuel system components for wear or contamination during service.

Quality Assurance

Continental supplies this flex fuel sensor as a genuine OEM part used by the vehicle manufacturer. That OE sourcing supports consistent signal output and application-specific fitment for GM vehicles including 2014-2020 Chevrolet Silverado 1500 and 2014-2020 GMC Sierra 1500.