Feature: 1. Professional manufacturing, this is perfect to fit for T56 or Non‑Electric Tran 4.8 5.3 6.0 1997‑2006 DBC LS1. 2. All wiring harnesses are long enough to install the PCM under the dashboard (18 inches have been added to facilitate computer installation). 3. All wiring harnesses are equipped with high‑quality buttonholes (installable on demand). 4. High‑quality reinforced ring terminal, made of high‑quality ABS material, durable and sturdy, not easy to damage. 5. Comes with all the relevant accessories in this package, which is made to meet your needs. Specification: Item Type: Standalone Wiring Harness Material: ABSApplication: Suitable for T56 or Non‑Electric Tran 4.8 5.3 6.0 1997‑2006 DBC LS1 How to Use: 1. Do not disconnect the battery during ignition. 2. Never make any wire in the wiring harness short-circuit to the ground (except the grounding wire), this will cause damage to the PCM.. Package List: 1 x Wire Harness Assembly2 x Screw2 x Gasket1 x Instruction2 x Relay Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.