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Dorman 645-681 Turn Signal Light Connector
Reliable Turn Signal Light Connector for Select GM Vehicles
The Dorman 645-681 Turn Signal Light Connector is designed to provide a secure and durable electrical connection for turn signal lights on various Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models. With a 17.5-inch wiring harness and 20-gauge wire, this connector ensures consistent signal transmission and reliable performance.
- Wiring harness length: 17.5 inches for flexible installation
- Wire gauge measurement: 20 gauge for optimal electrical flow
- Terminal types: Clavija and Pin for secure connections
- Compatible with multiple GM makes and models including Chevrolet Silverado and GMC Sierra series
- Part number 645-681 for precise identification and fitment
Durable Electrical Connector Designed for GM Turn Signal Systems
This turn signal light connector from Dorman is engineered to meet the electrical requirements of various GM vehicles, including Buick Achieva, Chevrolet Malibu, GMC Yukon, and Pontiac Grand Am. The 20-gauge wiring ensures adequate current capacity while maintaining flexibility. The 17.5-inch harness length allows for easy routing and installation in tight engine compartments or body panels. Featuring both clavija and pin terminal types, this connector provides a secure and corrosion-resistant connection to maintain consistent turn signal operation.
Compatible GM Vehicles and Models
This Dorman turn signal light connector is compatible with a wide range of GM vehicles, including:
- Buick Achieva, Century, Skylark
- Chevrolet Avalanche 2500, Cobalt, Malibu, Silverado 1500 HD, Suburban 1500, Tahoe
- GMC Sierra 1500, Sierra 2500 HD, Sierra 3500, Yukon XL 1500, Yukon XL 2500
- Oldsmobile Cutlass, Silhouette
- Pontiac G5, Grand Am
Common Applications and Issues Addressed
- Replacement of damaged or corroded turn signal connectors
- Restoring intermittent or non-functioning turn signal lights
- Upgrading worn wiring harnesses for improved electrical reliability
- Ensuring proper fitment in GM vehicles requiring 20-gauge wiring connectors
- Maintaining factory-style electrical connections for safety compliance
Installation Notes and Tips
- Verify vehicle compatibility using make, model, and year before installation
- Ensure terminals are clean and free of corrosion prior to connection
- Route the 17.5-inch wiring harness carefully to avoid pinching or abrasion
- Use appropriate tools to secure clavija and pin terminals firmly
- Test turn signal operation after installation to confirm proper function
Quality Assurance and Warranty Information
Dorman manufactures this turn signal light connector to meet or exceed OEM specifications for electrical connectors. The part number 645-681 undergoes quality control testing to ensure durability and reliable performance in automotive electrical systems. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship to provide confidence in product longevity.
This part fits 92 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2010 | Chevrolet | Cobalt | N/A | Black; 6 Way; Female w/Leads | |
| 2010 | Chevrolet | HHR | N/A | Black; 6 Way; Female w/Leads | |
| 2009 | Chevrolet | Cobalt | N/A | Black; 6 Way; Female w/Leads | |
| 2009 | Chevrolet | HHR | N/A | Black; 6 Way; Female w/Leads | |
| 2009 | Pontiac | G5 | N/A | Black; 6 Way; Female w/Leads | |
| 2008 | Chevrolet | Cobalt | N/A | Black; 6 Way; Female w/Leads | |
| 2008 | Chevrolet | HHR | N/A | Black; 6 Way; Female w/Leads | |
| 2008 | Pontiac | G5 | N/A | Black; 6 Way; Female w/Leads | |
| 2007 | Chevrolet | Cobalt | N/A | Black; 6 Way; Female w/Leads | |
| 2007 | Chevrolet | HHR | N/A | Black; 6 Way; Female w/Leads | |
| 2007 | Pontiac | G5 | N/A | Black; 6 Way; Female w/Leads | |
| 2006 | Chevrolet | Cobalt | N/A | Black; 6 Way; Female w/Leads | |
| 2006 | Chevrolet | HHR | N/A | Black; 6 Way; Female w/Leads | |
| 2005 | Chevrolet | Classic | N/A | ||
| 2005 | Chevrolet | Cobalt | N/A | Black; 6 Way; Female w/Leads | |
| 2005 | Pontiac | Grand Am | N/A | ||
| 2005 | Pontiac | Montana | Base | N/A | |
| 2004 | Chevrolet | Classic | N/A | ||
| 2004 | Oldsmobile | Alero | N/A | ||
| 2004 | Oldsmobile | Silhouette | N/A | ||
| 2004 | Pontiac | Grand Am | N/A | ||
| 2004 | Pontiac | Montana | N/A | ||
| 2003 | Chevrolet | Malibu | N/A | ||
| 2003 | Oldsmobile | Alero | N/A | ||
| 2003 | Oldsmobile | Silhouette | N/A | ||
| 2003 | Pontiac | Grand Am | N/A | ||
| 2003 | Pontiac | Montana | N/A | ||
| 2002 | Chevrolet | Avalanche 2500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | Chevrolet | Malibu | N/A | ||
| 2002 | Chevrolet | Silverado 1500 HD | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | Chevrolet | Silverado 2500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | Chevrolet | Silverado 2500 HD | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | Chevrolet | Silverado 3500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | Chevrolet | Suburban 1500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | Chevrolet | Suburban 2500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | GMC | Sierra 1500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | GMC | Sierra 1500 HD | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | GMC | Sierra 2500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | GMC | Sierra 2500 HD | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | GMC | Sierra 3500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | GMC | Yukon | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | GMC | Yukon XL 1500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | GMC | Yukon XL 2500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2002 | Oldsmobile | Alero | N/A | ||
| 2002 | Oldsmobile | Silhouette | N/A | ||
| 2002 | Pontiac | Grand Am | N/A | ||
| 2002 | Pontiac | Montana | N/A | ||
| 2001 | Chevrolet | Malibu | N/A | ||
| 2001 | Chevrolet | Silverado 1500 HD | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | Chevrolet | Silverado 2500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | Chevrolet | Silverado 2500 HD | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | Chevrolet | Silverado 3500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | Chevrolet | Suburban 1500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | Chevrolet | Suburban 2500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | Chevrolet | Tahoe | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | GMC | Sierra 1500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | GMC | Sierra 2500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | GMC | Sierra 2500 HD | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | GMC | Sierra 3500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | GMC | Yukon | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | GMC | Yukon XL 1500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | GMC | Yukon XL 2500 | N/A | Black; Inline to Headlight Connector; 6 Way; Female w/Leads | |
| 2001 | Oldsmobile | Alero | N/A | ||
| 2001 | Oldsmobile | Silhouette | N/A | ||
| 2001 | Pontiac | Grand Am | N/A | ||
| 2001 | Pontiac | Montana | N/A | ||
| 2000 | Chevrolet | Malibu | N/A | ||
| 2000 | Oldsmobile | Alero | N/A | ||
| 2000 | Oldsmobile | Silhouette | N/A | ||
| 2000 | Pontiac | Grand Am | N/A | ||
| 2000 | Pontiac | Montana | N/A | ||
| 1999 | Chevrolet | Malibu | N/A | ||
| 1999 | Oldsmobile | Alero | N/A | ||
| 1999 | Oldsmobile | Cutlass | N/A | ||
| 1999 | Oldsmobile | Silhouette | N/A | ||
| 1999 | Pontiac | Grand Am | N/A | ||
| 1999 | Pontiac | Montana | N/A | ||
| 1999 | Pontiac | Trans Sport | N/A | ||
| 1998 | Buick | Skylark | N/A | ||
| 1998 | Chevrolet | Malibu | N/A | ||
| 1998 | Oldsmobile | Achieva | N/A | ||
| 1998 | Oldsmobile | Cutlass | N/A | ||
| 1998 | Oldsmobile | Silhouette | N/A | ||
| 1998 | Pontiac | Grand Am | N/A | ||
| 1998 | Pontiac | Trans Sport | N/A | ||
| 1997 | Buick | Skylark | N/A | ||
| 1997 | Chevrolet | Malibu | N/A | ||
| 1997 | Oldsmobile | Achieva | N/A | ||
| 1997 | Oldsmobile | Cutlass | N/A | ||
| 1997 | Oldsmobile | Silhouette | N/A | ||
| 1997 | Pontiac | Grand Am | N/A | ||
| 1997 | Pontiac | Trans Sport | N/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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.