Keep your brake lights firing the moment the pedal moves with the Standard Ignition Brake Light Switch SLS-303. This stoplight switch signals when the brake pedal is applied to activate the brake lamps and related circuits, and it drops in as a direct-fit replacement across a wide range of GM trucks and SUVs — including the 1999-2006 Chevrolet Silverado 1500, 2001-2006 Chevrolet Tahoe, 2002-2009 Chevrolet Trailblazer, 2000-2006 GMC Yukon, 2002-2006 Cadillac Escalade, 2003-2007 Hummer H2, 2003-2008 Isuzu Ascender and 2005-2009 Saab 9-7X. See the Buyer's Guide tab for the full list of 52 applications.
- Copper alloy conductors: deliver strong electrical conductivity with low resistive losses.
- Special-design spring and contact arrangement: reduces arcing for extended service life.
- Brass or high-impact composite housing: built as specified for durability and performance.
- 100% tested: each switch is verified for mechanical and electrical switching performance.
Manufactured by a global producer of original-equipment ignition products with quality control maintained from componentry through finished product. Signs the original switch may need replacing include brake lights that stay off, stay on, or work intermittently. Diagnose the cause before replacing, as the same symptoms can come from wiring, fuses, or bulbs.
Interchange: SL2043 · 8738 · DR4106 · SL853 · 15038393 · 15128874 · 15158767 · 15161650 · 15163032 · 25771554 · 8151288740 · 8151587670 · 8151616500 · 8151630320 · 8257715540 · SL853SB · SLS303T
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this brake light switch do?
It senses when the brake pedal is applied and signals the brake lamp circuit to activate your stop lights and related systems.
Will the SLS-303 fit my vehicle?
It's a direct-fit replacement for 52 GM, Cadillac, Hummer, Isuzu and Saab applications. Check the Buyer's Guide tab to confirm your year, make and model.
What are signs this switch may need replacing?
Brake lights that stay off, stay on, or flicker can indicate a failed switch. Diagnose first, since wiring, fuses or bulbs can cause the same symptoms.
What is the housing made of?
Standard Ignition builds these stoplight switches with brass or high-impact composite housings as specified for the application, for durability and performance.
Is this switch tested before shipping?
Yes. Each switch is 100% tested to verify both its mechanical and electrical switching performance.
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