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Standard Ignition S-1256 Door Ajar Switch Connector - Front Left or Front Right
Door Ajar Switch Connector for GM Applications
Standard Ignition S-1256 is a door ajar switch connector built for electrical repair work where a damaged factory connector can interrupt signal flow. It uses high-grade materials for reliable conductivity and a secure connection, making it a practical choice for GM truck and SUV repairs.
Compatible With select Chevrolet Silverado, GMC Sierra, Chevrolet Trailblazer, GMC Envoy, Cadillac Escalade, and related applications across 1995-2009 model years, depending on connector style and position. Standard Ignition S-1256 is engineered for technicians who need a direct-fit electrical connector solution for common body and interior circuit repairs.
Key Features
- Door ajar switch connector for electrical connector repair
- Male connector gender with female pin-socket terminals
- 2-wire design with 16-inch harness length
- Includes butt splices for wire repair connections
- Built with materials selected to support consistent conductivity
- Standard Ignition S-1256 for service on GM and Saab applications
Detailed Description
This Standard Ignition S-1256 connector is designed for replacing a failed or damaged door ajar switch connector in vehicles that use a 2-terminal electrical interface. It is also used across multiple GM body and seat-related connector applications, including Chevrolet Silverado, GMC Sierra, Chevrolet Trailblazer, GMC Envoy, and Cadillac Escalade platforms. The harness length and terminal layout support repair work where the original connector has heat damage, broken locking tabs, corrosion, or terminal wear.
This part cross-references FEL-PRO 1243 for the same application. Standard Ignition S-1256 is a service-focused connector solution for technicians working on GM electrical connector repairs.
Common Repair Uses
- Broken or loose door ajar switch connector terminals
- Corroded or heat-damaged wiring at the connector body
- Intermittent door-ajar warning or body circuit signal loss
- Damaged connector housing from prior electrical service
- Failed 2-terminal connector on GM truck and SUV harnesses
Installation Notes and Tips
- Verify connector gender, terminal style, and wire count before installation.
- Match the vehicle’s original connector color, terminal layout, and position notes where listed.
- Use proper splice and crimp practices when joining the harness leads.
- Inspect the mating switch or harness side for corrosion or terminal spread before reconnecting.
- Confirm fitment by year, make, model, and application notes for Chevrolet Silverado, GMC Sierra, Chevrolet Trailblazer, and GMC Envoy.
Quality Assurance
Standard Ignition builds its pigtails and sockets with high-grade materials and application-focused engineering to support dependable electrical repair. The brand’s long-running development in electrical service parts is reflected in the S-1256 connector design for technician-grade repairs.
| Brand | Standard Ignition |
|---|---|
| Part Number | S-1256 |
| Connector Gender | Male |
| Connector Quantity | 1 |
| Contents | Includes butt splices |
| Harness Length - inches | 16" |
| Terminal Gender | Female |
| Terminal Quantity | 2 |
| Terminal Type | Pin socket |
| Wire Quantity | 2 |
This part fits 173 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2009 | Chevrolet | Trailblazer | N/A | Purple; Multiple Connectors Required; 2 Term. |
| 2009 | GMC | Envoy | N/A | Purple; Multiple Connectors Required; 2 Term.; Front |
| 2009 | Saab | 9-7x | N/A | Purple; Multiple Connectors Required |
| 2008 | Chevrolet | Trailblazer | N/A | 2-terminal white female power seat harness connector |
| 2008 | Chevrolet | Trailblazer | N/A | Purple; Multiple Connectors Required; 2 Term. |
| 2008 | GMC | Envoy | N/A | 2-terminal white female power seat harness connector |
| 2008 | GMC | Envoy | N/A | Purple; Multiple Connectors Required; 2 Term.; Front |
| 2008 | Saab | 9-7x | N/A | Purple; Multiple Connectors Required |
| 2007 | Buick | Rainier | N/A | 2-terminal white female power seat harness connector |
| 2007 | Buick | Rainier | N/A | w/ Latch Assembly; Multiple Connectors Required; Gray; Front |
| 2007 | Chevrolet | Silverado 1500 | N/A | |
| 2007 | Chevrolet | Silverado 1500 HD Classic | N/A | |
| 2007 | Chevrolet | Silverado 2500 HD | N/A | |
| 2007 | Chevrolet | Silverado 3500 | N/A | |
| 2007 | Chevrolet | Silverado 3500 HD | N/A | |
| 2007 | Chevrolet | Trailblazer | N/A | 2-terminal white female power seat harness connector |
| 2007 | Chevrolet | Trailblazer | N/A | Purple; Multiple Connectors Required; 2 Term. |
| 2007 | GMC | Envoy | N/A | 2-terminal white female power seat harness connector |
| 2007 | GMC | Envoy | N/A | Purple; Multiple Connectors Required; 2 Term.; Front |
| 2007 | GMC | Sierra 1500 | N/A | |
| 2007 | GMC | Sierra 1500 HD Classic | N/A | |
| 2007 | GMC | Sierra 2500 HD | N/A | |
| 2007 | GMC | Sierra 3500 Classic | N/A | |
| 2007 | GMC | Sierra 3500 HD | N/A | |
| 2007 | Saab | 9-7x | N/A | Purple; Multiple Connectors Required |
| 2006 | Buick | Rainier | N/A | 2-terminal white female power seat harness connector |
| 2006 | Buick | Rainier | N/A | w/ Latch Assembly; Multiple Connectors Required; Gray; Front |
| 2006 | Cadillac | Escalade | N/A | |
| 2006 | Cadillac | Escalade ESV | N/A | |
| 2006 | Cadillac | Escalade EXT | N/A | |
| 2006 | Chevrolet | Avalanche 1500 | N/A | |
| 2006 | Chevrolet | Avalanche 2500 | N/A | |
| 2006 | Chevrolet | Silverado 1500 | N/A | |
| 2006 | Chevrolet | Silverado 1500 HD | N/A | |
| 2006 | Chevrolet | Silverado 2500 HD | N/A | |
| 2006 | Chevrolet | Silverado 3500 | N/A | |
| 2006 | Chevrolet | SSR | N/A | 2-terminal white female power seat harness connector |
| 2006 | Chevrolet | SSR | N/A | White; 2 Term. Female; Front |
| 2006 | Chevrolet | Suburban 1500 | N/A | |
| 2006 | Chevrolet | Suburban 2500 | N/A | |
| 2006 | Chevrolet | Tahoe | N/A | |
| 2006 | Chevrolet | Trailblazer | N/A | 2-terminal white female power seat harness connector |
| 2006 | Chevrolet | Trailblazer | N/A | Purple; Multiple Connectors Required; 2 Term. |
| 2006 | Chevrolet | Trailblazer EXT | N/A | 2-terminal white female power seat harness connector |
| 2006 | Chevrolet | Trailblazer EXT | N/A | Purple; Multiple Connectors Required; Front |
| 2006 | GMC | Envoy | N/A | 2-terminal white female power seat harness connector |
| 2006 | GMC | Envoy | N/A | Purple; Multiple Connectors Required; 2 Term.; Front |
| 2006 | GMC | Envoy | N/A | |
| 2006 | GMC | Envoy XL | N/A | 2-terminal white female power seat harness connector |
| 2006 | GMC | Envoy XL | N/A | Purple; Multiple Connectors Required; 2 Term.; Front |
| 2006 | GMC | Envoy XL | N/A | |
| 2006 | GMC | Sierra 1500 | N/A | |
| 2006 | GMC | Sierra 1500 HD | N/A | |
| 2006 | GMC | Sierra 2500 HD | N/A | |
| 2006 | GMC | Sierra 3500 | N/A | |
| 2006 | GMC | Yukon | N/A | |
| 2006 | GMC | Yukon XL 1500 | N/A | |
| 2006 | GMC | Yukon XL 2500 | N/A | |
| 2006 | Saab | 9-7x | N/A | Purple; Multiple Connectors Required |
| 2005 | Buick | Rainier | N/A | 2-terminal white female power seat harness connector |
| 2005 | Buick | Rainier | N/A | w/ Latch Assembly; Multiple Connectors Required; Gray; Front |
| 2005 | Cadillac | Escalade | N/A | 2-terminal white female power seat harness connector |
| 2005 | Cadillac | Escalade ESV | N/A | 2-terminal white female power seat harness connector |
| 2005 | Cadillac | Escalade EXT | N/A | 2-terminal white female power seat harness connector |
| 2005 | Chevrolet | Avalanche 1500 | N/A | |
| 2005 | Chevrolet | Avalanche 2500 | N/A | |
| 2005 | Chevrolet | Silverado 1500 | N/A | |
| 2005 | Chevrolet | Silverado 1500 HD | N/A | |
| 2005 | Chevrolet | Silverado 2500 HD | N/A | |
| 2005 | Chevrolet | Silverado 3500 | N/A | |
| 2005 | Chevrolet | SSR | N/A | White; 2 Term. Female; Front |
| 2005 | Chevrolet | Suburban 1500 | N/A | |
| 2005 | Chevrolet | Suburban 2500 | N/A | |
| 2005 | Chevrolet | Tahoe | N/A | |
| 2005 | Chevrolet | Trailblazer | N/A | 2-terminal white female power seat harness connector |
| 2005 | Chevrolet | Trailblazer EXT | N/A | 2-terminal white female power seat harness connector |
| 2005 | GMC | Envoy | N/A | 2-terminal white female power seat harness connector |
| 2005 | GMC | Envoy XL | N/A | 2-terminal white female power seat harness connector |
| 2005 | GMC | Envoy XUV | N/A | 2-terminal white female power seat harness connector |
| 2005 | GMC | Sierra 1500 | N/A | 2-terminal white female power seat harness connector |
| 2005 | GMC | Sierra 1500 HD | N/A | 2-terminal white female power seat harness connector |
| 2005 | GMC | Sierra 2500 HD | N/A | 2-terminal white female power seat harness connector |
| 2005 | GMC | Sierra 3500 | N/A | 2-terminal white female power seat harness connector |
| 2005 | GMC | Yukon | N/A | 2-terminal white female power seat harness connector |
| 2005 | GMC | Yukon XL 1500 | N/A | 2-terminal white female power seat harness connector |
| 2005 | GMC | Yukon XL 2500 | N/A | 2-terminal white female power seat harness connector |
| 2005 | Saab | 9-7x | N/A | w/ Keyless Entry; Purple; Multiple Connectors Required; Front |
| 2004 | Buick | Rainier | N/A | 2-terminal white female power seat harness connector |
| 2004 | Buick | Rainier | N/A | w/ Latch Assembly; Multiple Connectors Required; Gray; Front |
| 2004 | Cadillac | Escalade | N/A | 2-terminal white female power seat harness connector |
| 2004 | Cadillac | Escalade ESV | N/A | 2-terminal white female power seat harness connector |
| 2004 | Cadillac | Escalade EXT | N/A | 2-terminal white female power seat harness connector |
| 2004 | Chevrolet | Avalanche 1500 | N/A | |
| 2004 | Chevrolet | Avalanche 2500 | N/A | |
| 2004 | Chevrolet | Silverado 1500 | N/A | 2-terminal white female power seat harness connector |
| 2004 | Chevrolet | Silverado 1500 | N/A | |
| 2004 | Chevrolet | Silverado 2500 | N/A | |
| 2004 | Chevrolet | Silverado 2500 HD | N/A | |
| 2004 | Chevrolet | Silverado 3500 | N/A | |
| 2004 | Chevrolet | SSR | N/A | White; 2 Term. Female; Front |
| 2004 | Chevrolet | Suburban 1500 | N/A | |
| 2004 | Chevrolet | Suburban 2500 | N/A | |
| 2004 | Chevrolet | Tahoe | N/A | |
| 2004 | Chevrolet | Trailblazer | N/A | 2-terminal white female power seat harness connector |
| 2004 | Chevrolet | Trailblazer EXT | N/A | 2-terminal white female power seat harness connector |
| 2004 | GMC | Envoy | N/A | 2-terminal white female power seat harness connector |
| 2004 | GMC | Envoy XL | N/A | 2-terminal white female power seat harness connector |
| 2004 | GMC | Envoy XUV | N/A | 2-terminal white female power seat harness connector |
| 2004 | GMC | Sierra 1500 | N/A | 2-terminal white female power seat harness connector |
| 2004 | GMC | Sierra 2500 | N/A | 2-terminal white female power seat harness connector |
| 2004 | GMC | Sierra 2500 HD | N/A | 2-terminal white female power seat harness connector |
| 2004 | GMC | Sierra 3500 | N/A | 2-terminal white female power seat harness connector |
| 2004 | GMC | Yukon | N/A | 2-terminal white female power seat harness connector |
| 2004 | GMC | Yukon XL 1500 | N/A | 2-terminal white female power seat harness connector |
| 2004 | GMC | Yukon XL 2500 | N/A | 2-terminal white female power seat harness connector |
| 2004 | Oldsmobile | Bravada | N/A | 2-terminal white female power seat harness connector |
| 2003 | Cadillac | Escalade | N/A | 2-terminal white female power seat harness connector |
| 2003 | Cadillac | Escalade ESV | N/A | 2-terminal white female power seat harness connector |
| 2003 | Cadillac | Escalade EXT | N/A | 2-terminal white female power seat harness connector |
| 2003 | Chevrolet | Avalanche 1500 | N/A | |
| 2003 | Chevrolet | Avalanche 2500 | N/A | |
| 2003 | Chevrolet | Blazer | Front Right | w/o Remote Entry Lock Control; w/ Latch Assembly; Purple; Multiple Connectors Required; 2 Term. |
| 2003 | Chevrolet | S10 | Front Right | 2-terminal white female power seat harness connector |
| 2003 | Chevrolet | Silverado 1500 | N/A | |
| 2003 | Chevrolet | Silverado 1500 HD | N/A | |
| 2003 | Chevrolet | Silverado 2500 | N/A | |
| 2003 | Chevrolet | Silverado 2500 HD | N/A | |
| 2003 | Chevrolet | Silverado 3500 | N/A | |
| 2003 | Chevrolet | SSR | N/A | White; 2 Term. Female; Front |
| 2003 | Chevrolet | Suburban 1500 | N/A | |
| 2003 | Chevrolet | Suburban 2500 | N/A | |
| 2003 | Chevrolet | Tahoe | N/A | |
| 2003 | Chevrolet | Trailblazer | N/A | 2-terminal white female power seat harness connector |
| 2003 | Chevrolet | Trailblazer EXT | N/A | 2-terminal white female power seat harness connector |
| 2003 | GMC | Envoy | N/A | 2-terminal white female power seat harness connector |
| 2003 | GMC | Envoy XL | N/A | 2-terminal white female power seat harness connector |
| 2003 | GMC | Sierra 1500 | N/A | 2-terminal white female power seat harness connector |
| 2003 | GMC | Sierra 1500 | N/A | |
| 2003 | GMC | Sierra 1500 HD | N/A | 2-terminal white female power seat harness connector |
| 2003 | GMC | Sierra 1500 HD | N/A | |
| 2003 | GMC | Sierra 2500 | N/A | 2-terminal white female power seat harness connector |
| 2003 | GMC | Sierra 2500 | N/A | |
| 2003 | GMC | Sierra 2500 HD | N/A | 2-terminal white female power seat harness connector |
| 2003 | GMC | Sierra 2500 HD | N/A | |
| 2003 | GMC | Sierra 3500 | N/A | 2-terminal white female power seat harness connector |
| 2003 | GMC | Sierra 3500 | N/A | |
| 2003 | GMC | Yukon | N/A | 2-terminal white female power seat harness connector |
| 2003 | GMC | Yukon XL 1500 | N/A | 2-terminal white female power seat harness connector |
| 2003 | GMC | Yukon XL 2500 | N/A | 2-terminal white female power seat harness connector |
| 2003 | Oldsmobile | Bravada | N/A | 2-terminal white female power seat harness connector |
| 2002 | Chevrolet | S10 | Front Right | 2-terminal white female power seat harness connector |
| 2002 | Chevrolet | Trailblazer | N/A | 2-terminal white female power seat harness connector |
| 2002 | Chevrolet | Trailblazer EXT | N/A | 2-terminal white female power seat harness connector |
| 2002 | GMC | Envoy | N/A | 2-terminal white female power seat harness connector |
| 2002 | GMC | Envoy XL | N/A | 2-terminal white female power seat harness connector |
| 2002 | Oldsmobile | Bravada | N/A | 2-terminal white female power seat harness connector |
| 2001 | Chevrolet | Blazer | Front Right | w/o Remote Entry Lock Control; Purple; Multiple Connectors Required; 2 Term. |
| 2001 | Chevrolet | S10 | Front Right | 2-terminal white female power seat harness connector |
| 2000 | Chevrolet | Blazer | Front Right | w/o Remote Entry Lock Control; Purple; Multiple Connectors Required; 2 Term. |
| 2000 | Chevrolet | S10 | Front Right | 2-terminal white female power seat harness connector |
| 1999 | Chevrolet | Blazer | Front Right | w/o Remote Entry Lock Control; Purple; Multiple Connectors Required; 2 Term. |
| 1999 | Chevrolet | S10 | Front Right | 2-terminal white female power seat harness connector |
| 1999 | Chevrolet | Silverado 1500 | Front Left | 2-terminal white female power seat harness connector |
| 1999 | Chevrolet | Silverado 1500 | Front Right | 2-terminal white female power seat harness connector |
| 1999 | Chevrolet | Suburban 1500 | Front Right | Multiple Connectors Required |
| 1998 | Chevrolet | Blazer | Front Right | w/o Remote Entry Lock Control; Purple; Multiple Connectors Required; 2 Term. |
| 1998 | Chevrolet | S10 | Front Right | 2-terminal white female power seat harness connector |
| 1997 | Chevrolet | Blazer | Front Right | Purple; Multiple Connectors Required |
| 1997 | Chevrolet | S10 | Front Right | 2-terminal white female power seat harness connector |
| 1996 | Chevrolet | Blazer | Front Right | w/ Latch Assembly; Purple; Multiple Connectors Required |
| 1996 | Chevrolet | S10 | Front Right | 2-terminal white female power seat harness connector |
| 1995 | Chevrolet | Blazer | Front Right | w/ Latch Assembly; Purple; Multiple Connectors Required |
| 1995 | Chevrolet | S10 | Front Right | 2-terminal white female power seat harness connector |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.