APDTY 756742 is a replacement 2-way electrical pigtail connector designed for evaporator canister vent valve solenoids on numerous GM vehicles. This red connector harness with leads replaces factory GM part numbers 12101858, 13585860, and 22687059, restoring reliable electrical connection to your vehicle's evaporative emissions system when the original connector has corroded, melted, or broken.
Key Takeaways
- Direct replacement for GM part numbers 12101858, 13585860, and 22687059
- 2-way red connector pigtail with leads for evap canister vent valve solenoid
- Fixes poor electrical connection causing EVAP system faults and check engine lights
- Compatible with numerous GM vehicles—verify fitment using the compatibility chart
- Includes wire leads for splicing into existing harness
Buy APDTY 756742 directly from APDTY
What Is the APDTY 756742 Pigtail Connector?
The APDTY 756742 is a universal-style electrical pigtail connector engineered to replace damaged or corroded wiring harness connectors on evaporative emission canister vent valve solenoids. The evap vent valve solenoid controls the flow of fuel vapors from the charcoal canister to the atmosphere as part of the vehicle's emissions control system. When the factory connector becomes damaged due to heat, moisture, or age, it causes intermittent or complete loss of electrical signal to the solenoid, triggering diagnostic trouble codes (DTCs) related to the EVAP system.
This pigtail features a 2-way (2-pin) red connector body with attached wire leads, allowing technicians to cut out the damaged factory connector and splice in a fresh connection. The design matches OEM specifications for proper pin spacing and terminal contact, ensuring reliable operation once installed.
What Symptoms Indicate a Failed Evap Vent Valve Connector?
A failing or damaged evap canister vent valve connector typically produces one or more of the following symptoms:
- Check Engine Light: DTCs such as P0446 (Evaporative Emission Control System Vent Control Circuit Malfunction), P0442 (EVAP System Leak Detected - Small Leak), P0455 (EVAP System Leak Detected - Large Leak), or P0449 (EVAP Vent Valve Control Circuit)
- Failed emissions test: Vehicle may not pass state or local emissions inspection due to EVAP system readiness monitors not completing
- Intermittent fault codes: CEL comes and goes, especially after driving in wet conditions or over rough roads
- Visible connector damage: Melted, cracked, or corroded pins; broken locking tab; or burnt insulation on wiring near the vent valve
- Hard starting or fuel odor: In rare cases, a stuck-open vent valve (due to electrical fault) can allow fuel vapors to escape, creating a fuel smell around the vehicle
If you observe any of these symptoms and diagnostic scan confirms the fault is electrical (rather than mechanical failure of the vent valve itself), replacing the connector pigtail often resolves the issue without needing to replace the entire valve or harness.
Which Vehicles Does the APDTY 756742 Fit?
The APDTY 756742 pigtail connector is designed to fit numerous GM vehicles that use the matching 2-way evap canister vent valve solenoid connector. The manufacturer has verified compatibility with vehicles using OE part numbers 12101858, 13585860, and 22687059.
Important: Because this is a universal-style connector used across multiple GM platforms and model years, exact vehicle fitment varies. To confirm compatibility with your specific vehicle year, make, and model, you must reference the live compatibility chart on the product page at autopartsdirecttoyou.com. Do not assume fitment based on brand alone—verify your vehicle is listed before purchase.
APDTY 756742 Specifications
| Specification | Detail |
|---|---|
| APDTY Part Number | 756742 |
| Connector Type | 2-Way (2-Pin) Female Pigtail |
| Color | Red |
| Application | Evaporative Canister Vent Valve Solenoid |
| Replaces OE Numbers | 12101858, 13585860, 22687059 |
| Wire Leads | Included (for splicing into existing harness) |
| Condition | Brand New |
How Do You Install the APDTY 756742 Pigtail?
Replacing a damaged evap vent valve connector pigtail is a straightforward repair suitable for DIY mechanics with basic soldering or crimp-connector skills. Follow these general steps:
- Disconnect the battery: Always disconnect the negative battery terminal before working on vehicle electrical systems to prevent short circuits.
- Locate the evap vent valve: The canister vent valve solenoid is typically mounted on or near the charcoal canister, under the vehicle near the fuel tank or in the rear wheel well area. Consult a service manual for your specific vehicle.
- Inspect the old connector: Examine the existing connector for damage. If the connector body is melted or pins are corroded, cut the old connector off, leaving as much wire length as practical.
- Prepare the wires: Strip back approximately 1/4 inch of insulation from each wire on both the vehicle harness and the new pigtail leads.
- Splice the connections: Join each wire using solder and heat-shrink tubing, or crimp-style butt connectors rated for automotive use. Ensure polarity is maintained if wire colors are different (though evap solenoids are typically non-polarized).
- Secure and protect: Use heat-shrink tubing or electrical tape to insulate each splice. Use zip ties or loom to secure the new pigtail to the harness, keeping it away from hot exhaust components and sharp edges.
- Reconnect and test: Reconnect the battery. Clear any stored DTCs with a scan tool, then start the vehicle and allow it to run through a drive cycle. Monitor for return of fault codes.
Note: If you are not comfortable with splicing automotive wiring, consult a professional technician. Poor electrical connections can lead to intermittent faults and additional troubleshooting time.
Emissions System Legal Use Notice
The evaporative emission control system is a federally mandated pollution-control device. All components, including wiring harnesses and connectors, must function properly to ensure the vehicle meets EPA and state emissions standards. This replacement pigtail connector is intended for legal use only, in accordance with federal, state, and local emissions laws. Tampering with, disabling, or removing emissions control components is illegal in most jurisdictions and can result in fines, failed emissions inspections, and increased air pollution.
When installing the APDTY 756742, ensure the repaired connection fully restores OEM function to the evap vent valve solenoid. After installation, verify system operation using a scan tool and complete any required drive cycles to set EVAP readiness monitors.
Frequently asked questions
Can I use the APDTY 756742 pigtail on any GM vehicle?
The 756742 is compatible with numerous GM vehicles that use the matching 2-way evap vent valve connector, but not all GM models. You must verify fitment using the compatibility chart on the APDTY product page for your specific year, make, and model before purchasing.
What OE part numbers does the APDTY 756742 replace?
APDTY 756742 replaces GM factory part numbers 12101858, 13585860, and 22687059. If your vehicle's service manual or parts diagram lists any of these numbers for the evap vent valve connector, this pigtail is the correct replacement.
Do I need to solder the wires or can I use crimp connectors?
Either method is acceptable. Soldering with heat-shrink tubing provides the most durable, corrosion-resistant connection, but quality crimp-style butt connectors designed for automotive use are also reliable if installed correctly. Avoid cheap twist-on wire nuts or uninsulated crimps.
Will replacing the connector clear my check engine light?
If the check engine light and EVAP-related DTCs are caused by a faulty connector (not a failed vent valve), replacing the pigtail and ensuring a solid electrical connection should resolve the issue. You will need to clear the codes with a scan tool and complete a drive cycle for the system to verify the repair and turn off the CEL.
The APDTY 756742 pigtail connector is a cost-effective, reliable solution for repairing damaged or corroded wiring to your vehicle's evaporative canister vent valve solenoid. By replacing the connector rather than the entire wiring harness, you save time and money while restoring proper EVAP system function and eliminating persistent check engine lights. Always verify vehicle compatibility using the live fitment chart, follow proper splicing techniques, and ensure compliance with emissions regulations. For further details and to confirm fitment for your specific vehicle, visit the product page at autopartsdirecttoyou.com.