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Drive By Wire Vortec T56 Non Electric Stand Alone LS Swap Harness


1 in stock (can be backordered)

Mass Air Flow *

Alternator Connector *

Show Stopper Braided Loom *


2003-2006 Silverado, Sierra, Yukon, Avalanche, Tahoe, Suburban.


Our Vortec DBW Standalone harness is specific for 2003-2006  4.8,5.3, and 6.0 engines. RPO Codes LM7, LR4, LQ4, and LQ9 with a Drive by Wire (Electronic) Throttle Body, Multec Injectors, and a T56 or Non-Electric Transmission. On 2003 and newer applications leave a note with your year so we can install green retainers on the harness.

Why BP Automotive?

All of our vortec standalone harnesses are made with GM color coded TXL wire to meet or exceed OEM standards!  All circuits that are ran by heat like the O2 sensor circuits are covered with 1200* Fiberglass Braid. We only use OEM Delphi, Kostal, Bosch, Molex, and Yazaki connectors, terminals, and seals on our standalone harnesses. All connectors that have Connector Position Assurance Lock on a factory harness have them on our harnesses also. Our harnesses also include a sliding, snug fitting Delphi Grommet that can be positioned on the main harness line to seal your firewall.

Our LS swap standalone harnesses are 5 foot long from the rear of the intake. This enables you to mount the PCM and Fuse Block in the passenger compartment! This harness is for pre-emissions vehicles or for off road use only. This harness does not have provisions for EGR, AIR, EVAP, or Rear O2 Sensors. We can add these for an additional cost, however in most cases they are not needed. IF EMISSIONS ARE NEEDED YOUR HARNESS WILL INCUR A LEAD TIME.

Additional Info

Our Vortec swap harnesses also require the removal of the VATS and emissions systems from the PCM. BP Automotive offers this service as well. This harness also requires the use of a Blue and Green PCM, which can be purchased from BP Automotive.


***IN STOCK!***






Weight 10 lbs
Dimensions 14 × 14 × 8 in
Mass Air Flow Connector

5 Wire Vortec/LS6/LS2, 5 Wire LS3 Card Style


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