Bull Boost Performance
T56 Stand alone Wire Harness Drive by Wire LS LS3 Vortec 03-07 4.8 5.3 6.0 DBW
T56 Stand alone Wire Harness Drive by Wire LS LS3 Vortec 03-07 4.8 5.3 6.0 DBW
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Product Description
| Features | Direct Fit, Easy Installation |
|---|---|
| Manufacturer Warranty | 1 Year |
| Custom Bundle | No |
| Other Part Number | T56 |
| Fitment Type | Direct Replacement |
| Modified Item | No |
| Non-Domestic Product | No |
| Fitment | 03-07 LS3 Vortec |
| Manufacturer Part Number | 03-07 LS Vortec Standalone Wire Harness Drive By Wire T56 4.8 |
| Type | Standalone Wire Harness |
Key Features:
1. All of our harnesses are built with OEM Quality and better
2. All Harnesses have a High Quality Grommet installed on the Harness (THAT SLIDES FOR DESIRED MOUNTING)
3. Harnesses receive a quality check before shipment.
4. GM Color Codes. Many Companies Do NOT Use GM Color Codes.
5. High Quality Reinforced Ring Terminals
6. 1200 Degree Fiberglass Braid on All Circuits Ran by Heat
7. All Factory CPA (Connector Position Assurance Locks)
8. 18" ADDED LENGTH FOR EASY COMPUTER MOUNTING
9. All harnesses come with the needed Dash Connections, which include Speedometer, Tachometer, Park Neutral, TCC, Malfunction Indicator, and a DLC Port.
Compatible Models and Years:
- Fits 2003 - 2007 CHEVROLET, GMC, CADILLAC AND HUMMER TRUCK ENGINES (DRIVE BY WIRE ONLY) WITH T56 TRANSMISSIONS.
Specifications:
These harnesses are designed for retrofitting '03 - '07 Vortec engines (4.8, 5.3, 6.0-Liter) and T56 transmissions into older muscle cars and street rods or newer non-emissions controlled vehicles.
Harness allows use of the factory Vortec intake manifold.
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.
Parcel Content:
- Complete Engine and Transmission Harness
Note:
The harnesses are for non-emissions equipped vehicles and do not include air pump or EGR provisions.
Shipping & Returns
Shipping & Returns
Shipping on most orders in 24-48 hours special orders can be 2-3 days. Returns see Returns Policy.
We have a 30-day return policy on most products, which means you have 30 days after receiving your item to request a return. Some products carry a longer manufacture warranty please contact us if you have questions about items.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at overthehilltractor@gmail.com. Please note that returns will need to be sent to the following address: 2005 Stuarts Draft Hwy, Stuarts Draft, VA 24477
If your return is accepted at damage or defective, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
If your return is due to no longer needed, wrong size order, ordered by mistake, found better pricing, etc the customer is responsible for the return shipping cost.
Any item returned over $50 cost we suggest insurance on package.
You can always contact us for any return question at overthehilltractor@gmail.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, we can only give 72 hours from time package is scanned delivered to accept claims. Please contact within 72 hours of delivery so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, like fuel related items due to hazardous materials shipping regulations. We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Electrical parts can only be returned if new and in original condition, Used electrical parts are not returnable unless actually defective, contact us with details.
Unfortunately, we cannot accept returns on sale items or gift cards.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at overthehilltractor@gmail.com.
Most items are covered by 30 day warranty, Fuel Related parts are only covered against actually manufacture defect since the fuel produced today breaks down gaskets and seals quickly. Electrical parts can only be returned if new and in original condition, Used electrical parts are not returnable unless actually defective, contact us with details. Returns are handled on each individual item, some items will not require return for refund just that customer submit picture of proof of issue. Please contact us with questions about returns.

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Free Shipping
Free shipping on orders over $150
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