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Standard IgnitionPart #: S-1157
Standard Ignition S-1157 Junction Block Connector
⚙️ 153 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$46.08Free Shipping
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, GMC, and Cadillac, Astro, Safari, Silverado 1500, Silverado 1500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, Sierra 1500, Sierra 1500 HD, Sierra 2500, Sierra 2500 HD, Sierra 3500, Escalade, C2500, C3500, K2500, K3500, Suburban 1500, Suburban 2500, Tahoe, Yukon, Yukon XL 1500, Yukon XL 2500, C1500, C1500 Suburban, C2500 Suburban, K1500, K1500 Suburban, and K2500 Suburban
🔄Easy Returns — Return within 60 days for a full refund
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Not what you need? Click here for all Junction Block Connector options
Overview of Standard Ignition Junction Block Connector S-1157
The Standard Ignition S-1157 junction block connector is designed for reliable electrical connections in select GM vehicles. This male connector with included butt splices ensures secure wiring for models like Chevrolet Silverado and GMC Sierra.
- Connector Gender: Male
- Includes Butt Splices for easy wiring
- Harness Length: 17 inches
- Terminal Gender: Female
- Terminal Quantity: 3 blade socket terminals
- Wire Quantity: 3 wires
Detailed Product Description
The S-1157 junction block connector from Standard Ignition is engineered to provide a dependable electrical connection for various Chevrolet, GMC, and Cadillac vehicles. Featuring a male connector with three female blade socket terminals, this part supports three wires and comes with a 17-inch harness for flexible installation. The included butt splices facilitate secure and efficient splicing, reducing the risk of loose or faulty connections. This connector is compatible with multiple GM models such as the Chevrolet Silverado 1500, GMC Sierra 2500 HD, and Cadillac Escalade, making it a versatile choice for electrical repairs or upgrades.
Applications and Common Issues Addressed
- Restores faulty or damaged junction block connections in Chevrolet C1500 and Suburban models
- Replaces worn connectors in GMC Yukon XL 2500 electrical systems
- Solves intermittent lighting or body electrical issues in Cadillac Escalade
- Facilitates wiring repairs in Chevrolet Tahoe and GMC Sierra 3500
- Ensures secure electrical connections in heavy-duty truck models like Chevrolet Silverado 2500 HD
Installation Notes and Tips
- Verify vehicle compatibility with the Standard Ignition S-1157 part number before installation
- Use proper crimping tools for the included butt splices to ensure a solid connection
- Route the 17-inch harness carefully to avoid pinching or abrasion
- Confirm terminal seating and secure locking to prevent electrical faults
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit and function. The S-1157 junction block connector undergoes rigorous quality control to ensure durability and reliable performance in electrical systems. Warranty coverage details should be confirmed through the product documentation or authorized Standard Ignition sources.
| Brand | Standard Ignition |
| Part Number | S-1157 |
| Connector Gender | Male |
| Contents | Includes Butt Splices |
| Harness Length - inches | 17" |
| Terminal Gender | Female |
| Terminal Type | Blade Socket |
This part fits 153 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2005 | Chevrolet | Astro | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2005 | GMC | Safari | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2004 | Chevrolet | Astro | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2004 | GMC | Safari | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2003 | Chevrolet | Astro | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2003 | GMC | Safari | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | Chevrolet | Astro | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | Chevrolet | Silverado 1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | Chevrolet | Silverado 1500 HD | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | Chevrolet | Silverado 2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | Chevrolet | Silverado 2500 HD | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | Chevrolet | Silverado 3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | GMC | Safari | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | GMC | Sierra 1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | GMC | Sierra 1500 HD | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | GMC | Sierra 2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | GMC | Sierra 2500 HD | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2002 | GMC | Sierra 3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | Chevrolet | Astro | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | Chevrolet | Silverado 1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | Chevrolet | Silverado 1500 HD | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | Chevrolet | Silverado 2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | Chevrolet | Silverado 2500 HD | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | Chevrolet | Silverado 3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | GMC | Safari | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | GMC | Sierra 1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | GMC | Sierra 1500 HD | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | GMC | Sierra 2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | GMC | Sierra 2500 HD | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2001 | GMC | Sierra 3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2000 | Cadillac | Escalade | N/A | |
| 2000 | Chevrolet | Astro | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2000 | Chevrolet | C2500 | N/A | |
| 2000 | Chevrolet | C3500 | N/A | |
| 2000 | Chevrolet | K2500 | N/A | |
| 2000 | Chevrolet | K3500 | N/A | |
| 2000 | Chevrolet | Silverado 1500 | N/A | |
| 2000 | Chevrolet | Silverado 2500 | N/A | |
| 2000 | Chevrolet | Suburban 1500 | N/A | |
| 2000 | Chevrolet | Suburban 2500 | N/A | |
| 2000 | Chevrolet | Tahoe | N/A | |
| 2000 | GMC | C2500 | N/A | |
| 2000 | GMC | C3500 | N/A | |
| 2000 | GMC | K2500 | N/A | |
| 2000 | GMC | K3500 | N/A | |
| 2000 | GMC | Safari | N/A | Green; 3-Terminal Female Junction Block Connector |
| 2000 | GMC | Sierra 1500 | N/A | |
| 2000 | GMC | Sierra 2500 | N/A | |
| 2000 | GMC | Yukon | N/A | |
| 2000 | GMC | Yukon XL 1500 | N/A | |
| 2000 | GMC | Yukon XL 2500 | N/A | |
| 1999 | Cadillac | Escalade | N/A | |
| 1999 | Chevrolet | C1500 | N/A | |
| 1999 | Chevrolet | C1500 Suburban | N/A | |
| 1999 | Chevrolet | C2500 | N/A | |
| 1999 | Chevrolet | C2500 Suburban | N/A | |
| 1999 | Chevrolet | C3500 | N/A | |
| 1999 | Chevrolet | K1500 | N/A | |
| 1999 | Chevrolet | K1500 Suburban | N/A | |
| 1999 | Chevrolet | K2500 | N/A | |
| 1999 | Chevrolet | K2500 Suburban | N/A | |
| 1999 | Chevrolet | K3500 | N/A | |
| 1999 | Chevrolet | Silverado 1500 | N/A | |
| 1999 | Chevrolet | Silverado 2500 | N/A | |
| 1999 | Chevrolet | Tahoe | N/A | |
| 1998 | Chevrolet | C1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | Chevrolet | C1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | Chevrolet | C2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | Chevrolet | C2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | Chevrolet | C3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | Chevrolet | K1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | Chevrolet | K1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | Chevrolet | K2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | Chevrolet | K2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | Chevrolet | K3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | Chevrolet | Tahoe | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | C1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | C1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | C2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | C2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | C3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | K1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | K1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | K2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | K2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | K3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1998 | GMC | Yukon | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | C1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | C1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | C2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | C2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | C3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | K1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | K1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | K2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | K2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | K3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | Chevrolet | Tahoe | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | C1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | C1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | C2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | C2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | C3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | K1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | K1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | K2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | K2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | K3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1997 | GMC | Yukon | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | C1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | C1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | C2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | C2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | C3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | K1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | K1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | K2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | K2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | K3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | Chevrolet | Tahoe | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | C1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | C1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | C2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | C2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | C3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | K1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | K1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | K2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | K2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | K3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1996 | GMC | Yukon | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | C1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | C1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | C2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | C2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | C3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | K1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | K1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | K2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | K2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | K3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | Chevrolet | Tahoe | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | C1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | C1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | C2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | C2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | C3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | K1500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | K1500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | K2500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | K2500 Suburban | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | K3500 | N/A | Green; 3-Terminal Female Junction Block Connector |
| 1995 | GMC | Yukon | N/A | Green; 3-Terminal Female Junction Block 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:
15305890EC654PT655
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.