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This controller is designed for specific GM vehicles equipped with the Integrated Trailer Brake Control (JL1) option. It fits 200+ applications across Chevrolet, GMC, and Cadillac models with V6 4.3L and V8 engines (4.8L, 5.3L, 6.0L, 6.2L, 6.6L). Always verify your vehicle has the JL1 code before ordering; only one controller is required per application.
No programming is required for this GM Genuine Parts controller—the solid-state design eliminates complex setup. However, like all trailer brake controllers, you'll need to adjust the gain (output strength) to match your trailer's weight and test braking performance in a safe area to ensure smooth, synchronized stops between vehicle and trailer.
This listing is for the brake controller module only (GM part number 15926102). Installation typically requires a vehicle-specific wiring harness to connect the controller to your truck's electrical system and trailer connector; these harnesses are sold separately. Check whether your GM vehicle has factory tow-package wiring already in place.
The catalog data does not specify the control type, but GM Genuine Parts controllers for modern trucks are typically proportional (inertia-sensing) units that apply trailer braking force in sync with vehicle deceleration. This solid-state design is engineered for four-wheel trailer brake systems and delivers smooth, controlled stops.
Installation difficulty depends on your vehicle's existing wiring—if your GM truck came with a factory tow package and brake-controller provisions, it may be plug-and-play. If not, installation involves connecting power, ground, brake light signal, and trailer output wires, which many experienced DIYers can handle by following GM's instructions; professional installation ensures proper wiring and functionality.
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Part # 15926102Dealer charges $157.98SAVE 44%— You save $70.03





Dealer charges $157.98SAVE 44%— You save $70.03

This GM Genuine Parts automotive component is engineered to meet or exceed OEM specifications for reliable performance and long service life.

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GM Genuine Parts is a trusted manufacturer of quality automotive parts.
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