OE Quality
60-Day Returns

Dorman 911-648 Vapor Canister Vent Valve
Dorman Vapor Canister Vent Valve for S10 and Sonoma
The Dorman 911-648 vapor canister vent valve is a direct-fit evaporative emissions component for select 2002-2003 Chevrolet S10 and GMC Sonoma models. It is built with a plastic body and black finish to restore proper venting in the EVAP system when the original valve is no longer operating correctly.
Key Features
- Specific-fit vapor canister vent valve for select Chevrolet and GMC trucks
- Plastic construction for everyday underhood durability
- Single inlet and single outlet configuration
- Male end with 15.8 mm outside diameter
- Black finish for OE-style appearance
- Direct replacement for part number 911-648
Detailed Description
This Dorman vapor canister vent valve is engineered to help maintain proper operation of the vehicle’s evaporative emissions system. On 2002-2003 Chevrolet S10 and 2002-2003 GMC Sonoma applications, a worn or malfunctioning vent valve can trigger an engine light and disrupt EVAP system performance. The 911-648 is a specific-fit replacement designed around the original application for straightforward service and reliable sealing and vent control.
This part cross-references Standard Ignition CVS42 for the same application. It is also referenced under OE number 15083253. Use Dorman 911-648 when servicing a 2002-2003 Chevrolet S10 vapor canister vent valve or a 2002-2003 GMC Sonoma EVAP vent valve replacement.
What It Helps Address
- Check engine light related to EVAP vent valve faults
- Improper vapor canister venting
- Evaporative emissions system performance issues
- Failed or sticking vent valve operation
- Replacement needs on 2002-2003 Chevrolet S10 and GMC Sonoma models
Installation Notes and Tips
Verify the vehicle’s year, make, and model before installation. This valve is a specific-fit component with one inlet and one outlet, so confirm connector and hose dimensions match the original part. Inspect surrounding EVAP hoses and connections for cracks, blockage, or damage before installing the replacement valve.
Quality Assurance
Dorman manufactures this replacement valve using quality materials selected for durability and proper EVAP system operation. The part is built to serve as a direct replacement for the original vapor canister vent valve on the listed Chevrolet S10 and GMC Sonoma applications.
| Brand | Dorman |
|---|---|
| Part Number | 911-648 |
| Color | Black |
| End 1 Gender | Male |
| End 1 Outside Diameter | 15.8 |
| Inlet Quantity | 1 |
| Length | 118.3 |
| Material | Plastic |
| Mounting Hardware Included | No |
| Outlet Quantity | 1 |
| Package Contents | 1 Vapor Canister Vent Valve |
| Universal Or Specific Fit | Specific |
This part fits 10 vehicles. Search below:
| Year | Make | Model | Body Type | Liters | Cylinders | Wheel Base | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2003 | Chevrolet | S10 | Standard Cab Pickup | 4.3L | V6 | 108.3" | N/A | |
| 2003 | Chevrolet | S10 | Standard Cab Pickup | 4.3L | V6 | 122.9" | N/A | |
| 2003 | Chevrolet | S10 | Extended Cab Pickup | 4.3L | V6 | 108.3" | N/A | |
| 2003 | Chevrolet | S10 | Extended Cab Pickup | 4.3L | V6 | 122.9" | N/A | |
| 2003 | GMC | Sonoma | Standard Cab Pickup | 4.3L | V6 | 108.3" | N/A | |
| 2003 | GMC | Sonoma | Standard Cab Pickup | 4.3L | V6 | 122.9" | N/A | |
| 2003 | GMC | Sonoma | Extended Cab Pickup | 4.3L | V6 | 108.3" | N/A | |
| 2003 | GMC | Sonoma | Extended Cab Pickup | 4.3L | V6 | 122.9" | N/A | |
| 2002 | Chevrolet | S10 | 4.3L | V6 | N/A | |||
| 2002 | GMC | Sonoma | 4.3L | V6 | 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.