Standard Ignition EFL-27 Turn Signal Flasher

Standard Ignition EFL-27 Turn Signal Flasher

Standard Ignition EFL-27 is a 12-volt turn signal flasher built for vehicles that use a 10-pin blade-style electrical connection. It is a direct replacement choice for GM trucks and SUVs that need consistent flasher operation for turn signals and hazard signaling.

Compatible with applications such as Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, and Hummer H2, this flasher is built to meet stringent quality requirements from a manufacturer with controlled production standards.

Key Features

• Part number EFL-27 turn signal flasher
• 12 V electrical system application
• 30 A amperage rating
• Male connector and male blade terminals
• 10-terminal configuration
• No mounting bracket included
• Fits GM vehicles with electronic or thermal flasher requirements where specified

Detailed Description

The Standard Ignition EFL-27 is an electrical flasher designed for turn signal circuits in select Cadillac, Chevrolet, GMC, and Hummer applications. It is commonly used on 2002-2007 GM trucks and SUVs, including Chevrolet Silverado 1500, Silverado 2500 HD, Tahoe, GMC Sierra 1500, Yukon, and Cadillac Escalade models. If you are searching for a Standard Ignition EFL-27 replacement for a 2003-2007 Chevrolet Silverado 1500 or a 2003-2007 GMC Sierra 2500 HD, this part matches the listed 10-pin, 12-volt configuration.

This part cross-references 1R2244 and FC563 for the same application.

What It Is Used For

• Restoring turn signal flash rate after flasher failure
• Correcting inoperative hazard or signal flashing
• Replacing a worn electronic flasher in GM truck and SUV electrical systems
• Addressing intermittent or inconsistent indicator operation
• Matching a 10-pin blade-terminal flasher setup

Installation Notes and Tips

Verify the connector style, terminal count, and voltage before installation. This unit uses male blade terminals and a male connector, so it should be matched to the vehicle’s original flasher socket. Confirm the application notes for U.S. emissions, electronic flasher, or thermal flasher requirements where listed, especially on Chevrolet Silverado, GMC Sierra, and Cadillac Escalade models.

For fitment reference, this part is listed for 2002-2007 Cadillac Escalade, Escalade ESV, and Escalade EXT; 2002-2007 Chevrolet Avalanche 1500 and Avalanche 2500; 2003-2007 Chevrolet Silverado and Suburban/Tahoe applications; 2003-2007 GMC Sierra, Yukon, and Yukon XL applications; and 2003-2007 Hummer H2.

Quality Assurance

Standard Ignition states that its parts are manufactured to stringent quality requirements in TS16949- and ISO9001-certified plants. The company maintains quality control throughout production, from component selection through finished product inspection.