Fleece Performance NSBU Connector Pigtail Set for 2001-2004 GM Silverado/Sierra 2500/3500 (Allison 1000/2000)

Fits 2001-2004 Chevrolet Silverado and GMC Sierra 2500 HD/3500 HD trucks equipped with the Allison 1000 or 2000 series transmission.

Restore the electrical integrity of your Allison transmission with the Fleece Performance NSBU (Neutral Start Back Up) replacement connector set. These connectors are a direct solution for damaged or corroded factory wiring at the transmission range switch, a common failure point that can lead to shifting issues or no-start conditions. Each pigtail features 6-inch leads produced using a fully automated wire cutting and terminal crimping process to ensure consistent, low-resistance connections that exceed manual repairs.

The kit is designed for a permanent, weather-tight installation by including high-quality heat-sealable butt-style connectors, protecting the splice from moisture and road debris. Whether you are performing a routine harness repair or troubleshooting transmission communication codes, this kit provides the professional-grade components required for a reliable fix.

• 6-inch wire pigtail leads for easy splicing
• Automated terminal crimping for maximum durability
• Includes heat-sealable butt connectors
• Direct replacement for 2001-2004 Allison 1000/2000 NSBU connectors
• Manufacturer Part Number: FPE-HAR-GM-NSBU-0104