GMC Sierra 2500HD Wiring Harness - Fleece Performance - Multiuse Sensor Pigtail No. 11 - 01-16. This OEM-style pigtail provides a direct replacement for the multiuse sensor connector used on 2001-2016 GM 2500/3500 Duramax applications, including the Sierra 2500HD.

Built to Fleece Performance specifications, this wiring harness pigtail restores proper connections without splicing factory wiring or relying on temporary fixes. The pigtail is useful for repair or custom engine/transmission work where the original connector is damaged or removed during modifications. It helps maintain correct signal routing for sensors, reducing diagnostic trouble and simplifying installation for enthusiasts who modify or restore heavy-duty Duramax trucks.

Features

• Direct-fit replacement for GM 2500/3500 Duramax multiuse sensor connector (2001–2016)
• Factory-style terminals and housing for reliable signal integrity
• Saves time compared to cutting and splicing original harnesses
• Ideal for repairs, swaps, or custom wiring projects on Sierra 2500HD

If you have questions about fitment, wiring, or compatibility with your build, call us directly — we’re happy to help. We offer installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area. 512-982-9393 (TX) | 562-981-6800 (CA)

Thinking about purchasing multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov