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Standard Ignition S-1491 4WD Indicator Light ConnectorOE Quality 60-Day Returns
Part #: S-1491

Standard Ignition S-1491 4WD Indicator Light Connector

208 vehicles fit this part
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Fitment: Buick, Cadillac, Chevrolet, GMC, Hummer, Oldsmobile, Pontiac, and Saturn, Allure, Avalanche, Avalanche 1500, Avalanche 2500, Aztek, Blazer, Canyon, Century, Colorado, Escalade, Escalade ESV, Escalade EXT, Express 1500, Express 2500, Express 3500, H2, H3, Jimmy, LaCrosse, Montana, S10, Savana 2500, Savana 3500, Sierra 1500, Sierra 1500 HD, Sierra 2500, Sierra 2500 HD, Sierra 3500, Sierra 3500 Classic, Sierra 3500 HD, Silhouette, Silverado 1500, Silverado 1500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, Silverado 3500 Classic, Silverado 3500 HD, Sky, Sonoma, Suburban 1500, Suburban 2500, Tahoe, Yukon, Yukon XL 1500, and Yukon XL 2500
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4WD Indicator Light Connector for GM Applications

Standard Ignition S-1491 is a 4WD indicator light connector built for electrical repair work where the original connector has failed, loosened, or lost conductivity. It uses high-grade materials to support solid terminal contact and dependable signal transfer in GM trucks, SUVs, and vans.

Compatible With Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD, Chevrolet Express, GMC Savana, Hummer H2, and other listed applications, this Standard Ignition S-1491 connector is a direct-fit service part for common dashboard and body electrical repairs.

Key Features

  • Female connector design with male blade terminals
  • 2-wire harness layout for electrical service repairs
  • 16-inch harness length for routing and replacement work
  • Includes butt splices for wire-to-wire connection repair
  • Built with materials selected for conductivity and secure terminal engagement
  • Cross-references FEL-PRO 1209 for the same application

Detailed Description

The Standard Ignition S-1491 is engineered for technicians replacing damaged 4WD indicator light wiring on a wide range of GM platforms. It is commonly used on Chevrolet Silverado 1500, Silverado 2500 HD, Tahoe, Suburban, Avalanche, GMC Sierra 1500 HD, Yukon, and related models across the 2002-2016 model years. The connector design supports reliable electrical contact where worn terminals, heat damage, or broken housings have affected system operation.

Standard Ignition focuses on pigtails and sockets for electrical jobs that require a clean repair rather than a temporary fix. The S-1491 part number is a practical choice when restoring factory-style connector integrity on Chevrolet Silverado and GMC Sierra applications, as well as select Express, Savana, Hummer H2, and other GM vehicles.

What It Helps Fix

  • Broken or cracked 4WD indicator light connector housing
  • Intermittent indicator light operation caused by poor terminal contact
  • Corrosion or heat damage at the original connector
  • Wiring repairs after connector pin damage or wire fatigue
  • Electrical faults related to a failed factory pigtail on GM trucks and SUVs

Installation Notes and Tips

Verify connector shape, terminal style, and wire count against the original part before installation. Use proper splice technique when joining the harness, and confirm terminal seating and polarity before reconnecting the circuit. This connector is listed for multiple GM truck, SUV, van, and crossover applications, so match the vehicle year and model carefully. For fitment research, confirm the part number S-1491 against the original connector on Chevrolet Silverado, GMC Sierra, and related GM platforms.

Quality Assurance

Standard Ignition designs its pigtails and sockets with technician-focused engineering and high-grade materials to support dependable electrical repair. The brand’s long-running development in electrical components is reflected in the S-1491 connector’s OE-style service approach for GM 4WD indicator light repairs.

BrandStandard Ignition
Part NumberS-1491
Connector GenderFemale
Connector Quantity1
ContentsIncludes butt splices
Harness Length - inches16"
Terminal GenderMale
Terminal Quantity2
Terminal TypeBlade terminals
Wire Quantity2

This part fits 208 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2016ChevroletExpress 25006.6LV8N/A
2016ChevroletExpress 35006.6LV8N/A
2016ChevroletSilverado 2500 HD6.6LV8N/A
2016ChevroletSilverado 3500 HD6.6LV8N/A
2016GMCSavana 25006.6LV8N/A
2016GMCSavana 35006.6LV8N/A
2016GMCSierra 2500 HD6.6LV8N/A
2016GMCSierra 3500 HD6.6LV8N/A
2015ChevroletExpress 25006.6LV8N/A
2015ChevroletExpress 35006.6LV8N/A
2015ChevroletSilverado 2500 HD6.6LV8N/A
2015ChevroletSilverado 3500 HD6.6LV8N/A
2015GMCSavana 25006.6LV8N/A
2015GMCSavana 35006.6LV8N/A
2015GMCSierra 2500 HD6.6LV8N/A
2015GMCSierra 3500 HD6.6LV8N/A
2014ChevroletExpress 25006.6LV8N/A
2014ChevroletExpress 35006.6LV8N/A
2014ChevroletSilverado 2500 HD6.6LV8N/A
2014ChevroletSilverado 3500 HD6.6LV8N/A
2014GMCSavana 25006.6LV8N/A
2014GMCSavana 35006.6LV8N/A
2014GMCSierra 2500 HD6.6LV8N/A
2014GMCSierra 3500 HD6.6LV8N/A
2013ChevroletExpress 25006.6LV8N/A
2013ChevroletExpress 35006.6LV8N/A
2013ChevroletSilverado 2500 HD6.6LV8N/A
2013ChevroletSilverado 3500 HD6.6LV8N/A
2013GMCSavana 25006.6LV8N/A
2013GMCSavana 35006.6LV8N/A
2013GMCSierra 2500 HD6.6LV8N/A
2013GMCSierra 3500 HD6.6LV8N/A
2012ChevroletExpress 25006.6LV8N/A
2012ChevroletExpress 35006.6LV8N/A
2012ChevroletSilverado 2500 HD6.6LV8N/A
2012ChevroletSilverado 3500 HD6.6LV8N/A
2012GMCSavana 25006.6LV8N/A
2012GMCSavana 35006.6LV8N/A
2012GMCSierra 2500 HD6.6LV8N/A
2012GMCSierra 3500 HD6.6LV8N/A
2011ChevroletExpress 25006.6LV8N/A
2011ChevroletExpress 35006.6LV8N/A
2011ChevroletSilverado 2500 HD6.6LV8N/A
2011ChevroletSilverado 3500 HD6.6LV8N/A
2011GMCSavana 25006.6LV8N/A
2011GMCSavana 35006.6LV8N/A
2011GMCSierra 2500 HD6.6LV8N/A
2011GMCSierra 3500 HD6.6LV8N/A
2010ChevroletExpress 25006.6LV8N/A
2010ChevroletExpress 35006.6LV8N/A
2010ChevroletSilverado 2500 HD6.6LV8N/A
2010ChevroletSilverado 3500 HD6.6LV8N/A
2010GMCSavana 25006.6LV8N/A
2010GMCSavana 35006.6LV8N/A
2010GMCSierra 2500 HD6.6LV8N/A
2010GMCSierra 3500 HD6.6LV8N/A
2009ChevroletExpress 25006.6LV8N/A
2009ChevroletExpress 35006.6LV8N/A
2009ChevroletSilverado 2500 HD6.6LV8N/A
2009ChevroletSilverado 3500 HD6.6LV8N/A
2009GMCSavana 25006.6LV8N/A
2009GMCSavana 35006.6LV8N/A
2009GMCSierra 2500 HD6.6LV8N/A
2009GMCSierra 3500 HD6.6LV8N/A
2009HummerH2N/A
2008ChevroletExpress 25006.6LV8N/A
2008ChevroletExpress 35006.6LV8N/A
2008ChevroletSilverado 2500 HD6.6LV8N/A
2008ChevroletSilverado 3500 HD6.6LV8N/A
2008GMCSavana 25006.6LV8N/A
2008GMCSavana 35006.6LV8N/A
2008GMCSierra 2500 HD6.6LV8N/A
2008GMCSierra 3500 HD6.6LV8N/A
2008HummerH2N/A
2008HummerH3N/A2-terminal female black Sun Visor Light connector
2008SaturnSkyN/A
2007BuickAllureN/A
2007BuickLaCrosseN/A
2007CadillacEscaladeN/A
2007CadillacEscalade ESVN/A
2007CadillacEscalade EXTN/A
2007ChevroletAvalancheN/A
2007ChevroletExpress 1500N/A
2007ChevroletExpress 25006.6LV8N/A
2007ChevroletExpress 35006.6LV8N/A
2007ChevroletSilverado 2500 HD6.6LV8N/A
2007ChevroletSilverado 3500 Classic6.6LV8N/A
2007ChevroletSilverado 3500 HD6.6LV8N/A
2007GMCSavana 25006.6LV8N/A
2007GMCSavana 35006.6LV8N/A
2007GMCSierra 2500 HD6.6LV8N/A
2007GMCSierra 3500 Classic6.6LV8N/A
2007GMCSierra 3500 HD6.6LV8N/A
2007HummerH2N/A
2007HummerH2N/A2-terminal female black Sun Visor Light connector
2007HummerH3N/A2-terminal female black Sun Visor Light connector
2006BuickAllureN/A
2006BuickLaCrosseN/A
2006CadillacEscaladeN/A
2006CadillacEscalade ESVN/A
2006CadillacEscalade EXTN/A
2006ChevroletAvalanche 1500N/A
2006ChevroletAvalanche 2500N/A
2006ChevroletExpress 1500N/A
2006ChevroletSilverado 1500N/A
2006ChevroletSilverado 1500 HDN/A
2006ChevroletSilverado 2500 HDN/A
2006ChevroletSilverado 3500N/A
2006ChevroletSuburban 1500N/A
2006ChevroletSuburban 2500N/A
2006ChevroletTahoeN/A
2006HummerH2N/A
2006HummerH2N/A2-terminal female black Sun Visor Light connector
2005BuickAllureN/A
2005BuickCenturyN/A
2005BuickLaCrosseN/A
2005CadillacEscaladeN/A
2005CadillacEscalade ESVN/A
2005CadillacEscalade EXTN/A
2005ChevroletAvalanche 1500N/A
2005ChevroletAvalanche 2500N/A
2005ChevroletBlazerN/A
2005ChevroletColoradoN/A
2005ChevroletExpress 1500N/A
2005ChevroletSilverado 1500N/A
2005ChevroletSilverado 1500 HDN/A
2005ChevroletSilverado 2500 HDN/A
2005ChevroletSilverado 3500N/A
2005ChevroletSuburban 1500N/A
2005ChevroletSuburban 2500N/A
2005ChevroletTahoeN/A
2005GMCJimmyN/A
2005GMCSierra 1500N/A
2005GMCSierra 1500 HDN/A
2005GMCSierra 2500 HDN/A
2005GMCSierra 3500N/A
2005GMCYukonN/A
2005GMCYukon XL 1500N/A
2005GMCYukon XL 2500N/A
2005HummerH2N/A
2005HummerH2N/A2-terminal female black Sun Visor Light connector
2005PontiacAztekN/A
2004CadillacEscaladeN/A
2004CadillacEscalade ESVN/A
2004CadillacEscalade EXTN/A
2004ChevroletAvalanche 1500N/A
2004ChevroletAvalanche 2500N/A
2004ChevroletBlazerN/A
2004ChevroletColoradoN/A
2004ChevroletExpress 1500N/A
2004ChevroletS10N/A
2004ChevroletSilverado 1500N/A
2004ChevroletSilverado 2500N/A
2004ChevroletSilverado 2500 HDN/A
2004ChevroletSilverado 3500N/A
2004ChevroletSuburban 1500N/A2-terminal female black Sun Visor Light connector
2004ChevroletSuburban 2500N/A2-terminal female black Sun Visor Light connector
2004ChevroletTahoeN/A2-terminal female black Sun Visor Light connector
2004GMCCanyonN/A
2004GMCSierra 1500N/A2-terminal female black Sun Visor Light connector
2004GMCSierra 2500N/A2-terminal female black Sun Visor Light connector
2004GMCSierra 2500 HDN/A2-terminal female black Sun Visor Light connector
2004GMCSierra 3500N/A2-terminal female black Sun Visor Light connector
2004GMCSonomaN/A
2004GMCYukonN/A2-terminal female black Sun Visor Light connector
2004GMCYukon XL 1500N/A2-terminal female black Sun Visor Light connector
2004GMCYukon XL 2500N/A2-terminal female black Sun Visor Light connector
2004OldsmobileSilhouetteN/A2-terminal female black Sun Visor Light connector
2004PontiacAztekN/A
2003CadillacEscaladeN/A
2003CadillacEscalade ESVN/A
2003CadillacEscalade EXTN/A
2003ChevroletAvalanche 1500N/A
2003ChevroletAvalanche 2500N/A
2003ChevroletBlazerN/A
2003ChevroletExpress 1500N/A
2003ChevroletS10N/A
2003ChevroletSilverado 1500N/A
2003ChevroletSilverado 1500 HDN/A
2003ChevroletSilverado 2500N/A
2003ChevroletSilverado 2500 HDN/A
2003ChevroletSilverado 3500N/A
2003ChevroletSuburban 1500N/A2-terminal female black Sun Visor Light connector
2003ChevroletSuburban 2500N/A2-terminal female black Sun Visor Light connector
2003ChevroletTahoeN/A2-terminal female black Sun Visor Light connector
2003GMCSierra 1500N/A
2003GMCSierra 1500 HDN/A
2003GMCSierra 2500N/A
2003GMCSierra 2500 HDN/A
2003GMCSierra 3500N/A
2003GMCSonomaN/A
2003GMCYukonN/A2-terminal female black Sun Visor Light connector
2003GMCYukon XL 1500N/A2-terminal female black Sun Visor Light connector
2003GMCYukon XL 2500N/A2-terminal female black Sun Visor Light connector
2003OldsmobileSilhouetteN/A2-terminal female black Sun Visor Light connector
2003PontiacAztekN/A
2003PontiacMontanaN/A2-terminal female black Sun Visor Light connector
2002ChevroletAvalanche 1500N/A
2002ChevroletAvalanche 2500N/A
2002ChevroletSilverado 1500N/A2-terminal female black Sun Visor Light connector
2002ChevroletSilverado 1500 HDN/A2-terminal female black Sun Visor Light connector
2002ChevroletSilverado 2500N/A2-terminal female black Sun Visor Light connector
2002ChevroletSilverado 2500 HDN/A2-terminal female black Sun Visor Light connector
2002ChevroletSilverado 3500N/A2-terminal female black Sun Visor Light connector
2002ChevroletSuburban 1500N/A
2002ChevroletSuburban 2500N/A
2002ChevroletTahoeN/A
2002PontiacAztekN/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:

1209135801031P1841EC989PT2267PT990

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