FREE 1 to 3-Day Delivery on Orders $119+ Details

Talk to a Silverado 1500 Sales Tech
1-888-706-1096
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Memorial Day Sale - Up to 50% Off! Shop Now>

Find Ignition Parts for your Silverado 1500

EFI Wiring Harness (03-06 V8 Silverado 1500 w/ Throttle By Wire)Find parts that fit my vehicle

Item S200547
$0.00
Want $10? Write one of the first 5 reviews
Our Price

$1,149.49 each

Ship to: 43232
Please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
Add to Cart
Save for later
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

    Loading Indicator

      Product Information

      Features, Description, Q&A, Specs & Installation

      Features

      • EFI Wiring Harness
      • Designed for Throttle By Wire Fuel Injection Systems
      • Ensures Proper Connection Between Engine Components
      • Pre-Wired for Factory Sensors and Injectors
      • Heavy-Duty Heat-Resistant Wire Insulation
      • Plug-and-Play Design for Easy Installation
      • Ideal for Engine Swaps and EFI Upgrades
      • Fits 2003-2006 V8 Silverado 1500 with Throttle By Wire Models

      Description

      Restore or Upgrade Your EFI System with a Precision-Engineered Wiring Harness. The EFI Wiring Harness is essential for maintaining a reliable fuel injection system in your Silverado 1500. Designed specifically for throttle-by-wire applications, this harness ensures accurate communication between engine sensors, injectors, and the ECM. Whether you're replacing a damaged harness or performing an engine swap, this component is a crucial upgrade for seamless EFI performance.

      Durable Construction for Long-Term Reliability. Built with heavy-duty, heat-resistant wire insulation, this harness withstands extreme engine bay conditions. The pre-wired connectors allow for a plug-and-play installation, reducing wiring errors and ensuring factory-like functionality. Designed for easy integration, this wiring harness optimizes fuel injection performance and keeps your engine running smoothly.

      Installation. This product is designed for direct plug-and-play installation but may require minor modifications for custom applications.

      Application. This EFI Wiring Harness fits 2003-2006 V8 Silverado 1500 with Throttle By Wire Models.

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

      Installation & What's in the Box

      Installation Info

      Installation Time

      (approx) 2 Hours

      Difficulty Level:

      Light to Moderate mechanical skill required.

      Installation Guides

        No guide available for this part yet.

      What's in the Box

      • (1) EFI Wiring Harness

      Questions & Answers

      No questions about this product yet. Ask the First Question

      Will It Fit My Silverado 1500

      • 4.8L V8 - 03, 04, 05, 06
      • 5.3L V8 - 03, 04, 05, 06
      • 6.0L V8 - 03, 04, 05, 06