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Dorman 645-800 Throttle Position Sensor Connector
| Brand | Dorman 645-800 |
|---|---|
| Fits | Hummer, Chevrolet, GMC, Cadillac, Workhorse, and Buick · 153 vehicles |
Weatherproof terminals. Helps deliver a reliable quick-disconnect electrical connection.
Clean appearance. Pigtail connector is designed for a neat installed look.
Blade terminals. Built for electrical repairs and accessory installations.
Cross-references FEL-PRO 1438, Pioneer Automotive Industries S-1010 and 1P2070 for the same application. See all 7.
Dorman 645-800 Throttle Position Sensor Connector
Dorman 645-800 is a throttle position sensor connector pigtail built for clean electrical repairs and accessory installations. It uses weatherproof terminals and a locking tab to help maintain a secure quick-disconnect connection in demanding underhood conditions.
Key Features
- Throttle position sensor connector pigtail for electrical repair work
- Weatherproof terminals help protect the connection point
- Locking tab supports a secure quick-disconnect fit
- 17.5-inch wiring harness length for repair routing
- 20-gauge wire construction
- Blade and Aspa terminal types
Product Details
This Dorman throttle position sensor connector is designed for service work where the original connector is damaged, corroded, or no longer locking properly. The pigtail format supports a cleaner repair than splicing directly at the connector body, and the weather-resistant terminal design helps maintain a dependable electrical connection. Dorman 645-800 is a practical replacement for vehicles that need a throttle position sensor connector repair with a factory-style appearance.
Compatible With select Chevrolet Silverado, GMC Sierra, Cadillac Escalade, Hummer H2, and related applications listed below, this connector also cross-references FEL-PRO 1438 for the same application.
Common Problems It Can Help Solve
- Broken or loose throttle position sensor connector terminals
- Corrosion at the connector causing intermittent electrical contact
- Damaged locking tab that will not retain the plug
- Worn wiring near the sensor connection point
- Failed connector housing from heat or vibration exposure
Installation Notes and Tips
Match the connector style, terminal layout, and wire routing before installation. Verify the vehicle’s throttle position sensor connector configuration and confirm the harness length is sufficient for the repair path. For fitment, this part fits 2003-2006 Chevrolet Silverado 1500, 2003-2006 GMC Sierra 1500, and 2003-2007 Hummer H2, along with additional listed Chevrolet, GMC, Cadillac, Buick, and Hummer applications. On 2004-2006 Chevrolet Express 2500 and 3500, and 2004-2006 GMC Savana 2500 and 3500, the listed application notes specify electronic throttle control.
Quality Assurance
Dorman manufactures replacement electrical components for repair-focused applications, with attention to connector fit, terminal protection, and serviceability. Part number 645-800 is built to support reliable electrical repair where a direct connector replacement is needed.
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2008 | Hummer | H3 | — | — | — | — | N/A | Black; Inline to Headlight Connector; 8 Way; Female w/Leads |
| 2007 | Chevrolet | Express 1500 | — | 5.3L | V8 | — | N/A | — |
| 2007 | Chevrolet | Express 2500 | — | 6.0L | V8 | — | N/A | — |
| 2007 | Chevrolet | Express 2500 | — | 4.8L | V8 | — | N/A | — |
| 2007 | Chevrolet | Express 3500 | — | 6.0L | V8 | — | N/A | — |
| 2007 | Chevrolet | Express 3500 | — | 4.8L | V8 | — | N/A | — |
| 2007 | Chevrolet | Silverado 1500 Classic | — | 5.3L | V8 | FLEX | N/A | Black; 8 Way Female w/Leads |
| 2007 | Chevrolet | Silverado 1500 Classic | — | 4.8L | V8 | — | N/A | Black; 8 Way Female w/Leads |
| 2007 | Chevrolet | Silverado 1500 HD Classic | — | — | — | — | N/A | Black; 8 Way Female w/Leads |
| 2007 | Chevrolet | Silverado 2500 HD Classic | — | 6.0L | V8 | — | N/A | Black; 8 Way Female w/Leads |
| 2007 | Chevrolet | Silverado 3500 Classic | — | 6.0L | V8 | — | N/A | Black; 8 Way Female w/Leads |
| 2007 | GMC | Savana 1500 | — | 5.3L | V8 | — | N/A | — |
| 2007 | GMC | Savana 2500 | — | 6.0L | V8 | — | N/A | — |
| 2007 | GMC | Savana 2500 | — | 4.8L | V8 | — | N/A | — |
| 2007 | GMC | Savana 3500 | — | 6.0L | V8 | — | N/A | — |
| 2007 | GMC | Savana 3500 | — | 4.8L | V8 | — | N/A | — |
| 2007 | GMC | Sierra 1500 Classic | — | 5.3L | V8 | FLEX | N/A | Black; 8 Way Female w/Leads |
| 2007 | GMC | Sierra 1500 Classic | — | 4.8L | V8 | — | N/A | Black; 8 Way Female w/Leads |
| 2007 | GMC | Sierra 1500 HD Classic | — | — | — | — | N/A | Black; 8 Way Female w/Leads |
| 2007 | GMC | Sierra 2500 HD Classic | — | 6.0L | V8 | — | N/A | Black; 8 Way Female w/Leads |
| 2007 | GMC | Sierra 3500 Classic | — | 6.0L | V8 | — | N/A | Black; 8 Way Female w/Leads |
| 2007 | Hummer | H2 | — | — | — | — | N/A | — |
| 2007 | Hummer | H3 | — | — | — | — | N/A | Black; Inline to Headlight Connector; 8 Way; Female w/Leads |
| 2006 | Cadillac | Escalade | — | 6.0L | V8 | — | N/A | — |
| 2006 | Cadillac | Escalade ESV | — | 6.0L | V8 | — | N/A | — |
| 2006 | Cadillac | Escalade EXT | — | 6.0L | V8 | — | N/A | — |
| 2006 | Chevrolet | Avalanche 1500 | — | — | — | — | N/A | — |
| 2006 | Chevrolet | Express 2500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2006 | Chevrolet | Express 3500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2006 | Chevrolet | Silverado 1500 | — | 5.3L | V8 | — | N/A | — |
| 2006 | Chevrolet | Silverado 1500 | — | 6.0L | V8 | — | N/A | — |
| 2006 | Chevrolet | Silverado 1500 | — | 4.3L | V6 | — | N/A | — |
| 2006 | Chevrolet | Silverado 1500 | — | 4.8L | V8 | — | N/A | — |
| 2006 | Chevrolet | Silverado 1500 HD | — | 6.0L | V8 | — | N/A | — |
| 2006 | Chevrolet | Silverado 2500 HD | — | 6.0L | V8 | — | N/A | — |
| 2006 | Chevrolet | Suburban 2500 | — | 6.0L | V8 | — | N/A | — |
| 2006 | Chevrolet | Tahoe | — | 5.3L | V8 | — | N/A | — |
| 2006 | Chevrolet | Tahoe | — | 4.8L | V8 | — | N/A | — |
| 2006 | GMC | Savana 2500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2006 | GMC | Savana 3500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2006 | GMC | Sierra 1500 | — | 5.3L | V8 | — | N/A | — |
| 2006 | GMC | Sierra 1500 | — | 6.0L | V8 | — | N/A | — |
| 2006 | GMC | Sierra 1500 | — | 4.3L | V6 | — | N/A | — |
| 2006 | GMC | Sierra 1500 | — | 4.8L | V8 | — | N/A | — |
| 2006 | GMC | Sierra 1500 HD | — | 6.0L | V8 | — | N/A | — |
| 2006 | GMC | Sierra 2500 HD | — | 6.0L | V8 | — | N/A | — |
| 2006 | GMC | Sierra 3500 | — | 6.0L | V8 | — | N/A | — |
| 2006 | GMC | Yukon | — | 5.3L | V8 | — | N/A | — |
| 2006 | GMC | Yukon | — | 4.8L | V8 | — | N/A | — |
| 2006 | GMC | Yukon XL 1500 | — | 5.3L | V8 | — | N/A | — |
| 2006 | GMC | Yukon XL 1500 | Denali | 6.0L | V8 | — | N/A | — |
| 2006 | GMC | Yukon XL 2500 | — | 6.0L | V8 | — | N/A | — |
| 2006 | Hummer | H2 | — | — | — | — | N/A | — |
| 2006 | Hummer | H3 | — | — | — | — | N/A | Black; Inline to Headlight Connector; 8 Way; Female w/Leads |
| 2005 | Cadillac | Escalade | — | 5.3L | V8 | — | N/A | — |
| 2005 | Cadillac | Escalade | — | 6.0L | V8 | — | N/A | — |
| 2005 | Cadillac | Escalade ESV | — | 6.0L | V8 | — | N/A | — |
| 2005 | Cadillac | Escalade EXT | — | 6.0L | V8 | — | N/A | — |
| 2005 | Chevrolet | Avalanche 1500 | — | — | — | — | N/A | — |
| 2005 | Chevrolet | Express 2500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2005 | Chevrolet | Express 3500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2005 | Chevrolet | Silverado 1500 | — | 5.3L | V8 | — | N/A | — |
| 2005 | Chevrolet | Silverado 1500 | — | 6.0L | V8 | — | N/A | — |
| 2005 | Chevrolet | Silverado 1500 | — | 4.3L | V6 | — | N/A | — |
| 2005 | Chevrolet | Silverado 1500 | — | 4.8L | V8 | — | N/A | — |
| 2005 | Chevrolet | Silverado 1500 HD | — | 6.0L | V8 | — | N/A | — |
| 2005 | Chevrolet | Silverado 2500 HD | — | 6.0L | V8 | — | N/A | — |
| 2005 | Chevrolet | Suburban 2500 | — | 6.0L | V8 | — | N/A | — |
| 2005 | Chevrolet | Tahoe | — | 5.3L | V8 | — | N/A | — |
| 2005 | Chevrolet | Tahoe | — | 4.8L | V8 | — | N/A | — |
| 2005 | GMC | Savana 2500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2005 | GMC | Savana 3500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2005 | GMC | Sierra 1500 | — | 5.3L | V8 | — | N/A | — |
| 2005 | GMC | Sierra 1500 | — | 6.0L | V8 | — | N/A | — |
| 2005 | GMC | Sierra 1500 | — | 4.3L | V6 | — | N/A | — |
| 2005 | GMC | Sierra 1500 | — | 4.8L | V8 | — | N/A | — |
| 2005 | GMC | Sierra 1500 HD | — | 6.0L | V8 | — | N/A | — |
| 2005 | GMC | Sierra 2500 HD | — | 6.0L | V8 | — | N/A | — |
| 2005 | GMC | Sierra 3500 | — | 6.0L | V8 | — | N/A | — |
| 2005 | GMC | Yukon | — | 5.3L | V8 | — | N/A | — |
| 2005 | GMC | Yukon | — | 4.8L | V8 | — | N/A | — |
| 2005 | GMC | Yukon | Denali | 6.0L | V8 | — | N/A | — |
| 2005 | GMC | Yukon XL 1500 | — | 5.3L | V8 | — | N/A | — |
| 2005 | GMC | Yukon XL 1500 | Denali | 6.0L | V8 | — | N/A | — |
| 2005 | GMC | Yukon XL 2500 | — | 6.0L | V8 | — | N/A | — |
| 2005 | Hummer | H2 | — | — | — | — | N/A | — |
| 2004 | Buick | Rainier | — | — | — | — | N/A | 8 Way Female w/Leads |
| 2004 | Cadillac | Escalade | — | 5.3L | V8 | — | N/A | — |
| 2004 | Cadillac | Escalade | — | 6.0L | V8 | — | N/A | — |
| 2004 | Cadillac | Escalade ESV | — | 6.0L | V8 | — | N/A | — |
| 2004 | Cadillac | Escalade EXT | — | 6.0L | V8 | — | N/A | — |
| 2004 | Chevrolet | Avalanche 1500 | — | — | — | — | N/A | — |
| 2004 | Chevrolet | Express 2500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2004 | Chevrolet | Express 3500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2004 | Chevrolet | Silverado 1500 | — | 5.3L | V8 | — | N/A | — |
| 2004 | Chevrolet | Silverado 1500 | — | 6.0L | V8 | — | N/A | — |
| 2004 | Chevrolet | Silverado 1500 | — | 4.3L | V6 | — | N/A | — |
| 2004 | Chevrolet | Silverado 1500 | — | 4.8L | V8 | — | N/A | — |
| 2004 | Chevrolet | Silverado 2500 HD | — | 6.0L | V8 | — | N/A | — |
| 2004 | Chevrolet | SSR | — | — | — | — | N/A | — |
| 2004 | Chevrolet | Suburban 2500 | — | 6.0L | V8 | — | N/A | — |
| 2004 | Chevrolet | Tahoe | — | 5.3L | V8 | — | N/A | — |
| 2004 | Chevrolet | Tahoe | — | 4.8L | V8 | — | N/A | — |
| 2004 | Chevrolet | Trailblazer | — | — | — | — | N/A | 8 Way Female w/Leads |
| 2004 | Chevrolet | Trailblazer EXT | — | — | — | — | N/A | 8 Way Female w/Leads |
| 2004 | GMC | Envoy XL | — | — | — | — | N/A | 8 Way Female w/Leads |
| 2004 | GMC | Envoy XUV | — | — | — | — | N/A | 8 Way Female w/Leads |
| 2004 | GMC | Savana 2500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2004 | GMC | Savana 3500 | — | 6.0L | V8 | — | N/A | w/Electronic Throttle Control |
| 2004 | GMC | Sierra 1500 | — | 5.3L | V8 | — | N/A | — |
| 2004 | GMC | Sierra 1500 | — | 6.0L | V8 | — | N/A | — |
| 2004 | GMC | Sierra 1500 | — | 4.3L | V6 | — | N/A | — |
| 2004 | GMC | Sierra 1500 | — | 4.8L | V8 | — | N/A | — |
| 2004 | GMC | Sierra 2500 | — | 6.0L | V8 | — | N/A | — |
| 2004 | GMC | Sierra 2500 HD | — | 6.0L | V8 | — | N/A | — |
| 2004 | GMC | Sierra 3500 | — | 6.0L | V8 | — | N/A | — |
| 2004 | GMC | Yukon | — | 5.3L | V8 | — | N/A | — |
| 2004 | GMC | Yukon | — | 6.0L | V8 | — | N/A | — |
| 2004 | GMC | Yukon | — | 4.8L | V8 | — | N/A | — |
| 2004 | GMC | Yukon XL 1500 | — | 5.3L | V8 | — | N/A | — |
| 2004 | GMC | Yukon XL 2500 | — | 6.0L | V8 | — | N/A | — |
| 2004 | Hummer | H2 | — | — | — | — | N/A | — |
| 2003 | Cadillac | Escalade | — | 5.3L | V8 | — | N/A | — |
| 2003 | Cadillac | Escalade | — | 6.0L | V8 | — | N/A | — |
| 2003 | Cadillac | Escalade ESV | — | 6.0L | V8 | — | N/A | — |
| 2003 | Cadillac | Escalade EXT | — | 6.0L | V8 | — | N/A | — |
| 2003 | Chevrolet | Avalanche 1500 | — | — | — | — | N/A | — |
| 2003 | Chevrolet | Silverado 1500 | — | 5.3L | V8 | — | N/A | — |
| 2003 | Chevrolet | Silverado 1500 | — | 6.0L | V8 | — | N/A | — |
| 2003 | Chevrolet | Silverado 1500 | — | 4.3L | V6 | — | N/A | — |
| 2003 | Chevrolet | Silverado 1500 | — | 4.8L | V8 | — | N/A | — |
| 2003 | Chevrolet | Silverado 1500 HD | — | 6.0L | V8 | — | N/A | — |
| 2003 | Chevrolet | Silverado 2500 HD | — | 6.0L | V8 | — | N/A | — |
| 2003 | Chevrolet | SSR | — | — | — | — | N/A | — |
| 2003 | Chevrolet | Suburban 2500 | — | 6.0L | V8 | — | N/A | — |
| 2003 | Chevrolet | Tahoe | — | 5.3L | V8 | — | N/A | — |
| 2003 | Chevrolet | Tahoe | — | 4.8L | V8 | — | N/A | — |
| 2003 | Chevrolet | Trailblazer EXT | — | 5.3L | V8 | — | N/A | — |
| 2003 | GMC | Envoy XL | — | 5.3L | V8 | — | N/A | — |
| 2003 | GMC | Sierra 1500 | — | 5.3L | V8 | — | N/A | — |
| 2003 | GMC | Sierra 1500 | — | 6.0L | V8 | — | N/A | — |
| 2003 | GMC | Sierra 1500 | — | 4.3L | V6 | — | N/A | — |
| 2003 | GMC | Sierra 1500 | — | 4.8L | V8 | — | N/A | — |
| 2003 | GMC | Sierra 1500 HD | — | 6.0L | V8 | — | N/A | — |
| 2003 | GMC | Sierra 2500 | — | 6.0L | V8 | — | N/A | — |
| 2003 | GMC | Sierra 2500 HD | — | 6.0L | V8 | — | N/A | — |
| 2003 | GMC | Sierra 3500 | — | 6.0L | V8 | — | N/A | — |
| 2003 | GMC | Yukon | — | 5.3L | V8 | — | N/A | — |
| 2003 | GMC | Yukon | — | 6.0L | V8 | — | N/A | — |
| 2003 | GMC | Yukon | — | 4.8L | V8 | — | N/A | — |
| 2003 | GMC | Yukon XL 1500 | — | 5.3L | V8 | — | N/A | — |
| 2003 | GMC | Yukon XL 2500 | — | 6.0L | V8 | — | N/A | — |
| 2003 | Hummer | H2 | — | — | — | — | N/A | — |
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