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Standard Ignition EFL-27 Turn Signal FlasherOE Quality 60-Day Returns
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Part #: EFL-27

Standard Ignition EFL-27 Turn Signal Flasher

⚙️ 158 vehicles fit this part
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🚗Fitment: Cadillac, Chevrolet, GMC, and Hummer, Escalade, Escalade ESV, Escalade EXT, Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD Classic, Silverado 2500 HD, Silverado 3500, Silverado 3500 HD, Suburban 1500, Suburban 2500, Tahoe, Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD Classic, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500 Classic, Sierra 3500 HD, Yukon, Yukon XL 1500, Yukon XL 2500, H2, Avalanche 1500, Avalanche 2500, Silverado 1500 HD, Sierra 1500 HD, Sierra 3500, Silverado 2500, and Sierra 2500
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Reliable Turn Signal Flasher for Select GM Vehicles

The Standard Ignition EFL-27 turn signal flasher is designed to provide consistent and dependable flashing performance for your vehicle's turn signals. Engineered for 12-volt electrical systems, this flasher unit is compatible with a range of Cadillac, Chevrolet, GMC, and Hummer models, ensuring proper signaling and safety on the road.

  • Amperage rating of 30 amps for stable electrical flow
  • Male blade terminals with 10 terminals for secure connections
  • 12-volt operation suitable for most light truck and SUV applications
  • Compact design without mounting brackets for flexible installation
  • Compatible with multiple GM full-size trucks and SUVs

Technical Details and Specifications

The EFL-27 turn signal flasher from Standard Ignition operates at 12 volts and supports a 30 amp current, making it suitable for heavy-duty electrical demands in vehicles like the Chevrolet Silverado 1500 HD and GMC Sierra 2500 HD. It features male blade terminals, with a total of 10 terminals to accommodate various wiring configurations. The unit does not include mounting brackets, allowing for versatile placement within the vehicle's electrical system. This flasher is designed specifically for use in vehicles requiring a reliable flasher function to maintain proper turn signal operation.

Compatible Vehicles and Applications

This turn signal flasher is compatible with a wide range of GM vehicles, including:

  • Cadillac Escalade, Escalade ESV, and Escalade EXT
  • Chevrolet Avalanche 1500 and 2500, Silverado 1500 Classic and HD series
  • GMC Sierra 1500 Classic, 2500 HD Classic, and 3500 HD Classic
  • Hummer H2
  • Chevrolet Suburban 1500 and 2500, Tahoe
  • GMC Yukon, Yukon XL 1500, and Yukon XL 2500

Common Issues Addressed by the EFL-27 Flasher

  • Intermittent or non-functioning turn signals
  • Rapid or irregular blinking of turn signal lights
  • Turn signals that fail to cancel after a turn
  • Electrical shorts or blown fuses related to flasher units
  • Replacement for worn or damaged original flasher units

Installation Notes and Tips

When installing the Standard Ignition EFL-27 turn signal flasher, ensure the vehicle's ignition is off and the battery is disconnected to prevent electrical shorts. The male blade terminals require a compatible female connector for secure attachment. Since this unit does not include mounting brackets, select a stable mounting location that prevents vibration and moisture exposure. Verify the amperage rating matches your vehicle’s specifications to avoid electrical issues.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM standards for fit and function. The EFL-27 turn signal flasher undergoes rigorous testing to ensure reliable performance in demanding automotive environments. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship to provide confidence in your replacement part.

BrandStandard Ignition
Part NumberEFL-27
Amperage Rating30 A
Connector GenderMale
FunctionsFlasher
Mounting Bracket(s) IncludedNo
Terminal GenderMale
Terminal TypeBlade
Voltage12

This part fits 158 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2007CadillacEscaladeN/A
2007CadillacEscalade ESVN/A
2007CadillacEscalade EXTN/A
2007ChevroletSilverado 1500N/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2007ChevroletSilverado 1500N/A
2007ChevroletSilverado 1500 ClassicN/A
2007ChevroletSilverado 1500 HD ClassicN/A
2007ChevroletSilverado 1500 HD ClassicN/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2007ChevroletSilverado 2500 HDN/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2007ChevroletSilverado 2500 HDN/A
2007ChevroletSilverado 3500N/A
2007ChevroletSilverado 3500 HDN/A
2007ChevroletSuburban 1500N/A
2007ChevroletSuburban 2500N/A
2007ChevroletTahoeN/A
2007GMCSierra 1500N/Aw/ U.S. Emissions; 10 Pin
2007GMCSierra 1500 ClassicN/Aw/ U.S. Emissions; 10 Pin
2007GMCSierra 1500 HD ClassicN/Aw/ U.S. Emissions; 10 Pin
2007GMCSierra 1500 HD ClassicN/A
2007GMCSierra 2500 HDN/Aw/ U.S. Emissions; 10 Pin
2007GMCSierra 2500 HD ClassicN/A
2007GMCSierra 3500 ClassicN/AExc. Heavy Duty; 10 Pin
2007GMCSierra 3500 ClassicN/A
2007GMCSierra 3500 HDN/A
2007GMCYukonN/A
2007GMCYukon XL 1500N/A
2007GMCYukon XL 2500N/A
2007HummerH26.0LV8N/A
2007HummerH2N/A
2006CadillacEscaladeN/A
2006CadillacEscalade ESVN/A
2006CadillacEscalade EXTN/A
2006ChevroletAvalanche 1500N/A
2006ChevroletAvalanche 2500N/A
2006ChevroletSilverado 1500N/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2006ChevroletSilverado 1500N/A
2006ChevroletSilverado 1500 HDN/A
2006ChevroletSilverado 1500 HDN/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2006ChevroletSilverado 2500 HDN/A
2006ChevroletSilverado 2500 HDN/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2006ChevroletSilverado 3500N/Aw/ U.S. Emissions; Exc. Heavy Duty; 10 Pin
2006ChevroletSilverado 3500N/A
2006ChevroletSuburban 1500N/A
2006ChevroletSuburban 2500N/A
2006ChevroletTahoeN/A
2006GMCSierra 1500N/Aw/ U.S. Emissions; 10 Pin
2006GMCSierra 1500N/A
2006GMCSierra 1500 HDN/A
2006GMCSierra 1500 HDN/Aw/ U.S. Emissions; 10 Pin
2006GMCSierra 2500 HDN/Aw/ U.S. Emissions; 10 Pin
2006GMCSierra 2500 HDN/A
2006GMCSierra 3500N/A
2006GMCSierra 3500N/AExc. Heavy Duty; 10 Pin
2006GMCYukonN/A
2006GMCYukon XL 1500N/A
2006GMCYukon XL 2500N/A
2006HummerH26.0LV8N/A
2006HummerH2N/A
2005CadillacEscaladeN/A
2005CadillacEscalade ESVN/A
2005CadillacEscalade EXTN/A
2005ChevroletAvalanche 1500N/A
2005ChevroletAvalanche 2500N/A
2005ChevroletSilverado 1500N/A
2005ChevroletSilverado 1500N/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2005ChevroletSilverado 1500 HDN/A
2005ChevroletSilverado 1500 HDN/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2005ChevroletSilverado 2500N/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2005ChevroletSilverado 2500 HDN/A
2005ChevroletSilverado 2500 HDN/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2005ChevroletSilverado 3500N/Aw/ U.S. Emissions; Exc. Heavy Duty; 10 Pin
2005ChevroletSilverado 3500N/A
2005ChevroletSuburban 1500N/A
2005ChevroletSuburban 2500N/A
2005ChevroletTahoeN/A
2005GMCSierra 1500N/Aw/ U.S. Emissions; 10 Pin
2005GMCSierra 1500N/A
2005GMCSierra 1500 HDN/A
2005GMCSierra 1500 HDN/Aw/ U.S. Emissions; 10 Pin
2005GMCSierra 2500 HDN/Aw/ U.S. Emissions; 10 Pin
2005GMCSierra 2500 HDN/A
2005GMCSierra 3500N/A
2005GMCSierra 3500N/AExc. Heavy Duty; 10 Pin
2005GMCYukonN/A
2005GMCYukon XL 1500N/A
2005GMCYukon XL 2500N/A
2005HummerH26.0LV8N/A
2005HummerH2N/A
2004CadillacEscaladeN/A
2004CadillacEscalade ESVN/A
2004CadillacEscalade EXTN/A
2004ChevroletAvalanche 1500N/A
2004ChevroletAvalanche 2500N/A
2004ChevroletSilverado 1500N/A
2004ChevroletSilverado 1500N/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2004ChevroletSilverado 2500N/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2004ChevroletSilverado 2500N/A
2004ChevroletSilverado 2500 HDN/A
2004ChevroletSilverado 2500 HDN/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2004ChevroletSilverado 3500N/A
2004ChevroletSilverado 3500N/Aw/ U.S. Emissions; Exc. Heavy Duty; 10 Pin
2004ChevroletSuburban 1500N/A
2004ChevroletSuburban 2500N/A
2004ChevroletTahoeN/A
2004GMCSierra 1500N/A
2004GMCSierra 1500N/Aw/ U.S. Emissions; 10 Pin
2004GMCSierra 2500N/Aw/ U.S. Emissions; 10 Pin
2004GMCSierra 2500N/A
2004GMCSierra 2500 HDN/A
2004GMCSierra 2500 HDN/Aw/ U.S. Emissions; 10 Pin
2004GMCSierra 3500N/AExc. Heavy Duty; 10 Pin
2004GMCSierra 3500N/A
2004GMCYukonN/A
2004GMCYukon XL 1500N/A
2004GMCYukon XL 2500N/A
2004HummerH26.0LV8N/A
2004HummerH2N/A
2003CadillacEscaladeN/A
2003CadillacEscalade ESVN/A
2003CadillacEscalade EXTN/A
2003ChevroletAvalanche 1500N/A
2003ChevroletAvalanche 2500N/A
2003ChevroletSilverado 1500N/A
2003ChevroletSilverado 1500N/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2003ChevroletSilverado 1500 HDN/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2003ChevroletSilverado 1500 HDN/A
2003ChevroletSilverado 2500N/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2003ChevroletSilverado 2500N/A
2003ChevroletSilverado 2500 HDN/A
2003ChevroletSilverado 2500 HDN/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2003ChevroletSilverado 3500N/Aw/ U.S. Emissions; Electronic Flasher; 10 Pin
2003ChevroletSilverado 3500N/A
2003ChevroletSuburban 1500N/AThermal Flasher; 10 Pin
2003ChevroletSuburban 1500N/A
2003ChevroletSuburban 2500N/AThermal Flasher; 10 Pin
2003ChevroletSuburban 2500N/A
2003ChevroletTahoeN/AThermal Flasher; 10 Pin
2003ChevroletTahoeN/A
2003GMCSierra 1500N/Aw/ U.S. Emissions; 10 Pin
2003GMCSierra 1500N/A
2003GMCSierra 1500 HDN/A
2003GMCSierra 1500 HDN/Aw/ U.S. Emissions; 10 Pin
2003GMCSierra 2500N/A
2003GMCSierra 2500N/Aw/ U.S. Emissions; 10 Pin
2003GMCSierra 2500 HDN/Aw/ U.S. Emissions; 10 Pin
2003GMCSierra 2500 HDN/A
2003GMCSierra 3500N/A10 Pin
2003GMCSierra 3500N/A
2003GMCYukonN/AElectronic Flasher; 10 Pin
2003GMCYukonN/A
2003GMCYukon XL 1500N/AElectronic Flasher; 10 Pin
2003GMCYukon XL 1500N/A
2003GMCYukon XL 2500N/AElectronic Flasher; 10 Pin
2003GMCYukon XL 2500N/A
2003HummerH26.0LV8N/A
2003HummerH2N/A
2002ChevroletAvalanche 1500N/A
2002ChevroletAvalanche 2500N/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:

103833211R224456-9036FC563FC6555FCA1006FL18FLA137LM487

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

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