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.