Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
HPI 2003–2007 LS Vortec drive-by-wire harness for a T56 or other non-electric transmission. Built for the listed 4.8, 5.3 and 6.0 applications, this setup has important reverse lockout limitations. Read the compatibility warnings below before selecting it for your swap.
WARNING WARNING THERE IS NO REVERSE LOCK OUT WITH THIS HARNESS
03-07 LS VORTEC STANDALONE WIRING HARNESS DRIVE BY WIRE T56 NON ELECTRIC 4.8 5.3 6.0 EV6
FREE ADAPTER Connectors TO CONVERT HarnessTO EV6 Injectors IF NEEDED. No one else includes the connectors. Please put in the buyers notes if you need Ev6 connectors. If you forget we have to charge $12.95 later for shipping and handling
FOR DRIVE BY WIRE THROTTLE BODY ONLY
APPLICATION: 2003 - 2007 CHEVROLET, GMC, CADILLAC AND HUMMER TRUCK ENGINES (DRIVE BY WIRE ONLY) WITH T56.
PARTS INCLUDED: Complete Engine and Transmission Harness, Instruction Manual
NOTES:These harnesses are designed for retrofitting '03 - '07 Vortec engines (4.8, 5.3, 6.0-Liter) and T56 Harness allows use of the factory Vortec intake manifold and multec injectors with flex-fuel injectors (EV6) optional(Ev6 plug and play adapters request in buyer notes). . They are completely plug and play with four wire hookup (switched power, constant power and ground connections required). Harnesses are designed with a sliding grommet seal and 4 - 5 feet of length from the rear of the cylinder head to the PCM mounting position under the vehicle dashboard. A sliding grommet seal allows for professional, leak proof installation. Harnesses are professionally constructed from Brand New GM Delphi Connectors and TXL (Polyethylene Cross Linked) High Temperature Wire to GM Specifications. All harnesses are 100% Quality Inspected prior to shipping. Note that harnesses are for non-emissions equipped vehicles and do not include air pump or EGR provisions.
IN STOCK for SAME DAY SHIPPING
As you can imagine, there is a LOT that goes into making an engine harness. There is even MORE that goes into making a Quality Engine Harness! Here at HP-INJECTORS, we have taken the initiative to purchase all of the PROPER PRODUCTION hand tools and Components to build the quality harness that you DEMAND and DESERVE.
All of our harnesses are built with OEM Quality and better
All Harnesses are long enough for the PCM to be mounted under the dash (ADDED 36" FOR EASY COMPUTER MOUNTING)
All Harnesses have a High Quality Grommet installed on the Harness (THAT SLIDES FOR DESIRED MOUNTING)
Harnesses receive a quality check before shipment.
GM Color Codes. Many Companies Do NOT Use GM Color Codes.
High Quality Reinforced Ring Terminals
1200 Degree Fiberglass Braid on All Circuits Ran by Heat
All Factory CPA (Connector Position Assurance Locks)
100% HANDMADE, right here in the U.S.A.
Harness comes with a complete install instruction packet.
All harnesses come with the needed Dash Connections, which include Speedometer, Tachometer, Park Neutral, TCC, Malfunction Indicator, and a DLC Port.
ADDED FEATURES INCLUDE
36" ADDED LENGTH FOR EASY COMPUTER MOUNTING
UPGRADED WIRE FOR RUNNING THOSE BIG INJECTORS (will run any size injector without issues)
UPGRADED 60-AMP RELAYS
Harness comes with a complete install instruction packet.
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
