LED-Compatible Flasher Relay for GMT800 Vehicles
This 10383321 flasher relay is a direct replacement module designed for 2003-2007 General Motors trucks and SUVs. Its primary function is to correct hyperflash when LED turn signal or hazard light bulbs are installed, ensuring your vehicle's signals flash at the standard, compliant rate.

 Product Overview
The factory flasher relay in your vehicle is designed to work with the specific electrical resistance of halogen bulbs. When lower-resistance LED bulbs are installed, the relay cycles too quickly, causing hyperflash. This replacement module is electronically calibrated to work correctly with LED bulbs, solving this common issue after a lighting upgrade.
 Key Features & Specifications
 Replaces OEM Part Numbers: 10383321, 15764135, 10383320, 15231201, LM487, EFL-27.
 Connector: 10-pin, factory-style plug.
 Primary Function: Corrects turn signal and hazard light hyperflash caused by LED bulb installation.
 Design: Electronic flasher module (non-thermal).

 Detailed Vehicle Compatibility (GMT800 Platform)
This part is designed for the following 2003-2007 vehicles:
 For Chevrolet: Silverado 1500/1500HD/2500HD/3500, Tahoe, Suburban, Avalanche
 For GMC: Sierra 1500/1500HD/2500HD/3500, Yukon, Yukon XL
 For Cadillac: Escalade, Escalade ESV, Escalade EXT
 For Hummer: H2
(Note: Some late 2006 models were sold as 2007 "Classic" models and are part of the GMT800 platform. This relay is NOT compatible with the newer GMT900 platform vehicles.)

 Installation & Usage Notes
 Locate the Old Relay: The factory flasher module is typically located under the driver's side dashboard, near the fuse panel or steering column. Consult your vehicle's manual for the exact location.
 Direct Swap: With the vehicle off, simply unplug the old 10-pin module and plug this new one into the same connector.
 Test: Turn on your hazard lights or turn signals to confirm a normal flash rate.
 Important: This relay is intended for use with LED bulbs. It is only compatible with vehicles that use the specified 10-pin flasher module from the GMT800 platform era.

 Package Includes
1 x LED Flasher Relay Module