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Standard SLS303T Brake Light SwitchOE Quality 60-Day Returns
Part #: SLS303T

Standard SLS303T Brake Light Switch

217 vehicles fit this part
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Fitment: Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, and Saab, 9-7x, Ascender, Avalanche 1500, Avalanche 2500, Bravada, C1500, Envoy, Envoy XL, Envoy XUV, Escalade, Escalade ESV, Escalade EXT, Express 1500, Express 2500, Express 3500, H2, Rainier, Savana 1500, Savana 2500, Savana 3500, Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD, Sierra 2500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD, Silverado 1500 HD Classic, Silverado 2500, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500, SSR, Suburban 1500, Suburban 2500, Tahoe, Trailblazer, Trailblazer EXT, Traverse, Yukon, Yukon XL 1500, and Yukon XL 2500
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Brake Light Switch for GM and Chevrolet Applications

The Standard SLS303T brake light switch is a 12-volt, plug-in replacement built with a rectangular female connector and blade terminals for direct electrical connection. It uses a push activation style and includes a mounting bracket for a cleaner, OE-style installation on supported vehicles.

Compatible With Chevrolet Silverado, Tahoe, Suburban, Trailblazer, GMC Sierra, Yukon, and related GM platforms, this brake light switch supports reliable stop-lamp signal operation across a wide range of 1999-2009 applications. The Standard SLS303T is also cross-referenced to OE and aftermarket numbers for the same application.

Key Features

  • Brake light switch for 12-volt vehicle electrical systems
  • Push-style activation for stop lamp signal control
  • Plug-in attachment method with one rectangular connector
  • 6-terminal design with female connector and male blade terminals
  • Plastic and metal construction with cream finish
  • Mounting bracket included for installation support
  • Standard SLS303T / Standard Ignition SLS-303 reference

Detailed Description

The Standard SLS303T is a brake light switch designed for GM trucks, SUVs, vans, and utility vehicles that use a plug-in, 6-terminal switch assembly. It is built with plastic and metal materials, a rectangular connector shape, and a push-style actuator to help restore proper brake pedal signal input to the lighting circuit. This part number is commonly searched as SLS303T brake light switch for Chevrolet Silverado, GMC Sierra, and Chevrolet Tahoe applications.

This part cross-references Standard Ignition SLS-303 for the same application. It also interchanges with 8738 and 15038393.

What It Helps Fix

  • Brake lamps that stay on or do not illuminate when the pedal is pressed
  • Intermittent stop lamp operation caused by a worn switch
  • Brake pedal signal faults affecting lighting circuit performance
  • Electrical connection issues at the switch connector
  • Replacement needs on GM vehicles with a plug-in brake light switch

Installation Notes and Tips

Verify connector style, terminal count, and mounting bracket layout before installation. This brake light switch uses a plug-in connection and does not include a wiring harness or hardware. Confirm vehicle-specific fitment for the exact year, make, and model before ordering.

  • Fits 2002-2009 Chevrolet Trailblazer
  • Fits 2009 Chevrolet Traverse
  • Fits 2002-2009 GMC Envoy
  • Fits 2005-2009 Saab 9-7x
  • Fits 2003-2008 Isuzu Ascender
  • Fits 2004-2007 Buick Rainier
  • Fits 2003-2007 Chevrolet Express 1500
  • Fits 2003-2007 Chevrolet Express 2500
  • Fits 2003-2007 Chevrolet Express 3500
  • Fits 2007 Chevrolet Silverado 1500 Classic
  • Fits 2007 Chevrolet Silverado 1500 HD Classic
  • Fits 2007 Chevrolet Silverado 2500 HD Classic
  • Fits 2003-2007 GMC Savana 1500
  • Fits 2003-2007 GMC Savana 2500
  • Fits 2003-2007 GMC Savana 3500
  • Fits 2007 GMC Sierra 1500 Classic
  • Fits 2007 GMC Sierra 2500 HD Classic
  • Fits 2003-2007 Hummer H2
  • Fits 2002-2006 Cadillac Escalade
  • Fits 2003-2006 Cadillac Escalade ESV
  • Fits 2002-2006 Cadillac Escalade EXT
  • Fits 2002-2006 Chevrolet Avalanche 1500
  • Fits 2002-2006 Chevrolet Avalanche 2500
  • Fits 1999-2006 Chevrolet Silverado 1500
  • Fits 2005-2006 Chevrolet Silverado 1500 HD
  • Fits 2001-2003 Chevrolet Silverado 1500 HD
  • Fits 2001-2006 Chevrolet Silverado 2500 HD
  • Fits 2001-2006 Chevrolet Silverado 3500
  • Fits 2003-2006 Chevrolet SSR
  • Fits 2001-2006 Chevrolet Suburban 1500
  • Fits 2001-2006 Chevrolet Suburban 2500
  • Fits 2001-2006 Chevrolet Tahoe
  • Fits 2002-2006 Chevrolet Trailblazer EXT
  • Fits 2002-2006 GMC Envoy XL
  • Fits 1999-2006 GMC Sierra 1500
  • Fits 2005-2006 GMC Sierra 1500 HD
  • Fits 2001-2003 GMC Sierra 1500 HD
  • Fits 2001-2006 GMC Sierra 2500 HD
  • Fits 2001-2006 GMC Sierra 3500
  • Fits 2000-2006 GMC Yukon
  • Fits 2000-2006 GMC Yukon XL 1500
  • Fits 2000-2006 GMC Yukon XL 2500
  • Fits 2004-2005 GMC Envoy XUV
  • Fits 1999-2004 Chevrolet Silverado 2500
  • Fits 1999-2004 GMC Sierra 2500
  • Fits 2002-2004 Oldsmobile Bravada
  • Fits 2001 Chevrolet C1500

Quality Assurance

Standard is a recognized aftermarket brand for electrical and switch components, and this brake light switch is built to match the listed connector, terminal, and activation specifications for the supported GM applications.

BrandStandard
Part NumberSLS303T
Terminal Quantity6
Connector GenderFemale
Terminal GenderMale
Activation StylePush
Attachment MethodPlug in
Color/FinishCream
Connector Quantity1
Connector ShapeRectangular
Connector TypePlug in
FinishPlastic, metal
FunctionsSwitch
Hardware IncludedNo
MaterialPlastic, metal
Mounting Bracket(s) IncludedYes
Terminal TypeBlade
Voltage12
Wiring Harness IncludedNo

This part fits 217 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2009ChevroletTrailblazerN/A
2009ChevroletTraverse3.6LV6N/A
2009GMCEnvoyN/A
2009Saab9-7xN/A
2008ChevroletTrailblazerN/A
2008GMCEnvoyN/A
2008IsuzuAscender4.2LL6N/A
2008Saab9-7xN/A
2007BuickRainier5.3LV8N/A
2007ChevroletExpress 1500N/A
2007ChevroletExpress 2500N/A
2007ChevroletExpress 3500N/A
2007ChevroletSilverado 1500 ClassicN/A
2007ChevroletSilverado 1500 HD ClassicN/A
2007ChevroletSilverado 2500 HD ClassicN/A
2007ChevroletTrailblazerN/A
2007GMCEnvoyN/A
2007GMCSavana 1500N/A
2007GMCSavana 25006.0LV8N/A
2007GMCSavana 35004.8LV8N/A
2007GMCSierra 1500 ClassicN/A
2007GMCSierra 2500 HD ClassicN/A
2007HummerH26.0LV8N/A
2007IsuzuAscender4.2LL6N/A
2007Saab9-7xN/A
2006BuickRainier4.2LL6N/A
2006CadillacEscaladeN/A
2006CadillacEscalade ESVN/A
2006CadillacEscalade EXTN/A
2006ChevroletAvalanche 1500N/A
2006ChevroletAvalanche 2500N/A
2006ChevroletExpress 1500N/A
2006ChevroletExpress 2500N/A
2006ChevroletExpress 3500N/A
2006ChevroletSilverado 1500N/A
2006ChevroletSilverado 1500 HDN/A
2006ChevroletSilverado 2500 HDN/A
2006ChevroletSilverado 3500N/A
2006ChevroletSSRN/A
2006ChevroletSuburban 1500N/A
2006ChevroletSuburban 2500N/A
2006ChevroletTahoeN/A
2006ChevroletTrailblazerN/A
2006ChevroletTrailblazer EXTN/A
2006GMCEnvoyN/A
2006GMCEnvoy XLN/A
2006GMCSavana 1500N/A
2006GMCSavana 2500N/A
2006GMCSavana 3500N/A
2006GMCSierra 1500N/A
2006GMCSierra 1500 HDN/A
2006GMCSierra 2500 HDN/A
2006GMCSierra 3500N/A
2006GMCYukonN/A
2006GMCYukon XL 1500DenaliN/A
2006GMCYukon XL 2500N/A
2006HummerH26.0LV8N/A
2006IsuzuAscender4.2LL6N/A
2006Saab9-7xN/A
2005BuickRainier5.3LV8N/A
2005CadillacEscaladeN/A
2005CadillacEscalade ESVN/A
2005CadillacEscalade EXTN/A
2005ChevroletAvalanche 1500N/A
2005ChevroletAvalanche 2500N/A
2005ChevroletExpress 1500N/A
2005ChevroletExpress 2500N/A
2005ChevroletExpress 3500N/A
2005ChevroletSilverado 1500N/A
2005ChevroletSilverado 1500 HDN/A
2005ChevroletSilverado 2500 HDN/A
2005ChevroletSilverado 3500N/A
2005ChevroletSSRN/A
2005ChevroletSuburban 1500N/A
2005ChevroletSuburban 2500N/A
2005ChevroletTahoeN/A
2005ChevroletTrailblazerN/A
2005ChevroletTrailblazer EXTN/A
2005GMCEnvoyN/A
2005GMCEnvoy XLN/A
2005GMCEnvoy XUVN/A
2005GMCSavana 1500N/A
2005GMCSavana 2500N/A
2005GMCSavana 3500N/A
2005GMCSierra 1500N/A
2005GMCSierra 1500 HDN/A
2005GMCSierra 2500 HDN/A
2005GMCSierra 3500N/A
2005GMCYukonN/A
2005GMCYukon XL 1500DenaliN/A
2005GMCYukon XL 2500N/A
2005HummerH26.0LV8N/A
2005IsuzuAscender5.3LV8N/A
2005Saab9-7xN/A
2004BuickRainier4.2LL6N/A
2004CadillacEscaladeN/A
2004CadillacEscalade ESVN/A
2004CadillacEscalade EXTN/A
2004ChevroletAvalanche 1500N/A
2004ChevroletAvalanche 2500N/A
2004ChevroletExpress 1500N/A
2004ChevroletExpress 2500N/A
2004ChevroletExpress 3500N/A
2004ChevroletSilverado 1500N/A
2004ChevroletSilverado 2500N/A
2004ChevroletSilverado 2500 HDN/A
2004ChevroletSilverado 3500N/A
2004ChevroletSSRN/A
2004ChevroletSuburban 1500N/A
2004ChevroletSuburban 2500N/A
2004ChevroletTahoeN/A
2004ChevroletTrailblazerN/A
2004ChevroletTrailblazer EXTN/A
2004GMCEnvoyN/A
2004GMCEnvoy XLN/A
2004GMCEnvoy XUVN/A
2004GMCSavana 1500N/A
2004GMCSavana 2500N/A
2004GMCSavana 3500N/A
2004GMCSierra 1500N/A
2004GMCSierra 2500N/A
2004GMCSierra 2500 HDN/A
2004GMCSierra 3500N/A
2004GMCYukonN/A
2004GMCYukon XL 1500DenaliN/A
2004GMCYukon XL 2500N/A
2004HummerH26.0LV8N/A
2004IsuzuAscender4.2LL6N/A
2004OldsmobileBravadaN/A
2003CadillacEscaladeN/A
2003CadillacEscalade ESVN/A
2003CadillacEscalade EXTN/A
2003ChevroletAvalanche 1500N/A
2003ChevroletAvalanche 2500N/A
2003ChevroletExpress 1500N/A
2003ChevroletExpress 2500N/A
2003ChevroletExpress 3500N/A
2003ChevroletSilverado 1500N/A
2003ChevroletSilverado 1500 HDN/A
2003ChevroletSilverado 2500N/A
2003ChevroletSilverado 2500 HDN/A
2003ChevroletSilverado 3500N/A
2003ChevroletSSRN/A
2003ChevroletSuburban 1500N/A
2003ChevroletSuburban 2500N/A
2003ChevroletTahoeN/A
2003ChevroletTrailblazerN/A
2003ChevroletTrailblazer EXTN/A
2003GMCEnvoyN/A
2003GMCEnvoy XLN/A
2003GMCSavana 1500N/A
2003GMCSavana 2500N/A
2003GMCSavana 3500N/A
2003GMCSierra 1500N/A
2003GMCSierra 1500 HDN/A
2003GMCSierra 2500N/A
2003GMCSierra 2500 HDN/A
2003GMCSierra 3500N/A
2003GMCYukonN/A
2003GMCYukon XL 1500DenaliN/A
2003GMCYukon XL 2500N/A
2003HummerH26.0LV8N/A
2003IsuzuAscender4.2LL6N/A
2003OldsmobileBravadaN/A
2002CadillacEscaladeN/A
2002CadillacEscalade EXTN/A
2002ChevroletAvalanche 1500N/A
2002ChevroletAvalanche 2500N/A
2002ChevroletSilverado 1500N/A
2002ChevroletSilverado 1500 HDN/A
2002ChevroletSilverado 2500N/A
2002ChevroletSilverado 2500 HDN/A
2002ChevroletSilverado 3500N/A
2002ChevroletSuburban 1500N/A
2002ChevroletSuburban 2500N/A
2002ChevroletTahoeN/A
2002ChevroletTrailblazerN/A
2002ChevroletTrailblazer EXTN/A
2002GMCEnvoyN/A
2002GMCEnvoy XLN/A
2002GMCSierra 1500N/A
2002GMCSierra 1500 HDN/A
2002GMCSierra 2500N/A
2002GMCSierra 2500 HDN/A
2002GMCSierra 3500N/A
2002GMCYukonN/A
2002GMCYukon XL 1500N/A
2002GMCYukon XL 2500N/A
2002OldsmobileBravadaN/A
2001ChevroletC1500N/A
2001ChevroletSilverado 1500N/A
2001ChevroletSilverado 1500 HDN/A
2001ChevroletSilverado 2500N/A
2001ChevroletSilverado 2500 HDN/A
2001ChevroletSilverado 35008.1LV8N/A
2001ChevroletSuburban 1500N/A
2001ChevroletSuburban 2500N/A
2001ChevroletTahoeN/A
2001GMCSierra 1500N/A
2001GMCSierra 1500 HDN/A
2001GMCSierra 2500N/A
2001GMCSierra 2500 HDN/A
2001GMCSierra 3500N/A
2001GMCYukonN/A
2001GMCYukon XL 1500N/A
2001GMCYukon XL 2500N/A
2000ChevroletSilverado 1500N/A
2000ChevroletSilverado 2500N/A
2000GMCSierra 1500N/A
2000GMCSierra 2500N/A
2000GMCYukonN/A
2000GMCYukon XL 1500N/A
2000GMCYukon XL 2500N/A
1999ChevroletSilverado 1500N/A
1999ChevroletSilverado 2500N/A
1999GMCSierra 1500N/A
1999GMCSierra 2500N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

150383931512887481512887408738DR4106SL2043SL853SL853SBSLS-303

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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