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Standard Ignition FFS1 Flex Fuel Sensor
| Brand | Standard Ignition FFS1 |
|---|---|
| Connector Gender | Female |
| Connector Type | Plug In |
| Contents | Sensor |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Fits | Chevrolet and GMC · 30 vehicles |
Plug-in design. Female connector with blade terminals for straightforward installation.
Precision operation. One-piece laser-welded body helps protect sensor integrity.
Fast response. Breathable Teflon membrane promotes quicker switch rates.
Cross-references Continental SE1001S, Standard Ignition FFS1 and VEMO V51-72-0171 for the same application. See all 10.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Standard Ignition FFS1 Flex Fuel Sensor
The Standard Ignition FFS1 flex fuel sensor is built for accurate ethanol content measurement and stable fuel system communication. It is a direct-fit sensor for select Chevrolet and GMC trucks and SUVs, including Silverado 1500, Suburban 1500, Tahoe, Sierra 1500, Yukon, Yukon XL 1500, S10, and Sonoma applications.
Key Features
- One-piece laser-welded body for added protection and consistent sensor operation
- Dual internal talc seal helps maintain sensor integrity over time
- Breathable Teflon membrane supports faster switching response
- Stainless steel shield helps protect the sensing element from thermal shock
- 3-terminal blade design with female plug-in connector for direct replacement use
- Standard Ignition FFS1 cross-references Continental SE1001S and VEMO V51-72-0171 for the same application
Detailed Description
Standard Ignition FFS1 is a flex fuel sensor used to monitor fuel composition so the engine control system can adjust fueling for ethanol-blended gasoline. Its sealed construction, Teflon membrane, and stainless steel shielding are engineered to support reliable signal response and consistent operation in demanding underhood conditions. This part number is a practical replacement choice for 2000-2005 Chevrolet S10 and GMC Sonoma, as well as 2002-2005 Chevrolet Silverado 1500, Suburban 1500, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL 1500 applications.
What It Helps Address
- Incorrect fuel composition readings
- Hard starting or rough running related to fuel blend detection
- Check engine lights tied to flex fuel sensor faults
- Delayed sensor response affecting fuel trim control
- Driveability issues on ethanol-blended fuel systems
Installation Notes and Tips
Verify connector style, terminal count, and vehicle application before installation. The FFS1 uses a female plug-in connector with 1 connector and 3 male blade terminals. Confirm the sensor location and routing on the vehicle before removing the original unit, and inspect the harness connector for corrosion or damaged terminals during replacement.
Quality Assurance
Standard Ignition manufactures emission-related components with process control from component production through final assembly. The FFS1 is built to support consistent fit and operation across the listed Chevrolet and GMC applications.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2005 | Chevrolet | Silverado 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2005 | Chevrolet | Suburban 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2005 | Chevrolet | Tahoe | 5.3L | V8 | FLEX | N/A | — |
| 2005 | GMC | Sierra 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2005 | GMC | Yukon | 5.3L | V8 | FLEX | N/A | — |
| 2005 | GMC | Yukon XL 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2004 | Chevrolet | Silverado 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2004 | Chevrolet | Suburban 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2004 | Chevrolet | Tahoe | 5.3L | V8 | FLEX | N/A | — |
| 2004 | GMC | Sierra 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2004 | GMC | Yukon | 5.3L | V8 | FLEX | N/A | — |
| 2004 | GMC | Yukon XL 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2003 | Chevrolet | Silverado 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2003 | Chevrolet | Suburban 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2003 | Chevrolet | Tahoe | 5.3L | V8 | FLEX | N/A | — |
| 2003 | GMC | Sierra 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2003 | GMC | Yukon | 5.3L | V8 | FLEX | N/A | — |
| 2003 | GMC | Yukon XL 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2002 | Chevrolet | S10 | 2.2L | L4 | FLEX | N/A | — |
| 2002 | Chevrolet | Silverado 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2002 | Chevrolet | Suburban 1500 | 5.3L | V8 | — | N/A | — |
| 2002 | Chevrolet | Tahoe | 5.3L | V8 | FLEX | N/A | — |
| 2002 | GMC | Sierra 1500 | 5.3L | V8 | FLEX | N/A | — |
| 2002 | GMC | Sonoma | 2.2L | L4 | FLEX | N/A | — |
| 2002 | GMC | Yukon | 5.3L | V8 | FLEX | N/A | — |
| 2002 | GMC | Yukon XL 1500 | 5.3L | V8 | — | N/A | — |
| 2001 | Chevrolet | S10 | 2.2L | L4 | FLEX | N/A | — |
| 2001 | GMC | Sonoma | 2.2L | L4 | FLEX | N/A | — |
| 2000 | Chevrolet | S10 | 2.2L | L4 | FLEX | N/A | — |
| 2000 | GMC | Sonoma | 2.2L | L4 | FLEX | N/A | — |
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