1999-2014 GMC Sierra LED Rear Turn Signal Bulbs With Built-in Resistor, No Hyperflash (PAIR)
1999-2014 GMC Sierra LED Rear Turn Signal Bulbs With Built-in Resistor, No Hyperflash (PAIR) - Red is backordered and will ship as soon as it is back in stock.
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1999-2014 GMC Sierra LED Rear Turn Signal Bulbs With Built-in Resis...
3157 LED Rear Turn Signal Bulbs for GMC Sierra
Upgrade the rear lighting of your 1999-2014 GMC Sierra with a 3157 LED rear turn signal bulb designed for the brake and turn signal functions. These bulbs replace the factory incandescent setup with significantly brighter LED output while keeping the installation plug-and-play.
The built-in resistor is placed on the turn signal filament, not both filaments. This addresses the additional load required by the turn signal circuit without keeping a resistor active during normal brake and parking operation. A silent cooling fan activates when the turn signal is operating, while the full metal heatsink helps to dissipate the resistor heat.
The electrical design is CANBUS compatible, nonpolar, and CK compatible. Installation is plug-and-play, so you don't need to cut wiring or install separate external resistors.
1600 Lumens With 360-Degree Output
The underground lighting bulb delivers red and amber illumination at 1600 lumens. This is 3X higher than typical halogen bulb lighting.
Each bulb uses 54 LED chips arranged to provide 360-degree light output around the bulb. This distributes the light throughout the compatible rear lamp housing instead of concentrating illumination in only one direction.
Built-in Resistor for No Hyperflash
One common issue after replacing incandescent turn signals with LEDs is hyperflash. The lower electrical load of an LED bulb can cause the vehicle's turn-signal system to interpret the bulb as failed and increase the blinking rate.
This GMC Sierra turn signal bulb replacement uses a built-in resistor on the turn signal filament to address that load difference. No separate resistor is required for the compatible application. This resistor corrects the load difference and keeps the bulb running smoothly without blinking or flashing.
The cooling system is designed around this resistor. The fan runs when the turn signal is active, helping manage heat without keeping the resistor under the same load during normal brake or parking-light operation.
3157 Rear Turn Signal Bulb for Compatible Sierra Models
This bulb uses the 3157 configuration for compatible rear brake and turn signal applications. The product is specified for 1999-2013 GMC Sierra 1500 and 1999-2014 GMC Sierra 2500/3500.
Full Metal Cooling With a Silent Fan
Heat management is built into the bulb rather than relying on a separate component added during installation. The full metal heatsink helps dissipate heat from the LED assembly, while the silent fan activates when the turn signal is operating.
The fan's operation is tied to the turn signal circuit because the built-in resistor is active there.
Plug-and-Play Installation
Difficulty Level: Beginner
Installation takes approximately 10 minutes. Remove the factory bulb, install the LED replacement, and test the brake and turn signal functions.
No slicing, complicated wiring, or separate resistor installation is required for compatible applications.
