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1999-2002 Silverado, Sierra, Tahoe, Suburban, and Yukon. 2003-2006 Silverado, Sierra, Tahoe, Suburban, and Yukon (DBC ONLY).
Our Vortec standalone harnesses are designed for installing these new GM EFI engines into your ride, whatever it may be. This swap harness is specific for 1999-2006 4.8, 5.3, and 6.0 engines common RPO Codes LM4, LM7, LQ4, and LQ9. This standalone harness is meant to be used with a Drive by Cable (Mechanical) Throttle Body, Multec II Injectors, and a 4L60e Transmission. On 2003 and newer applications leave a note with your year so we can install green retainers on the harness. We will also need to know the service numbers on your PCM to determine if it can be used for DBC.
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 CPA on a factory harness have them on our harnesses as well. Our harnesses also feature a sliding, snug fitting Delphi Grommet that can be positioned on the main harness line to seal your firewall.
Vortec swap harnesses from BP Automotive are 5 foot long from the rear of the intake! As a result, our customers can mount the PCM and Fuse Block in the passenger compartment! However, if you don’t have room inside your passenger compartment with the 5 foot of length you will have plenty of options in your engine bay as well! The fuse block included has been used on many GM applications and has all of the weather resistant covers! The top cover is labeled with a legend just like a factory GM vehicle. This fuse block design and length gives our customers more options than other standalone harnesses can. Our Vortec 4L46e Standalone harness is for pre emissions vehicles and are meant for off road use only.
Our LS swap harnesses also require the removal of the VATS and emissions systems from the PCM. BP Automotive offers this service with a discount when purchasing a new harness. This harness also requires the use of a Red and Blue PCM service numbers 12200411 or 9354896, which can be purchased from BP Automotive. This application uses an Electronic Automatic Transmission applications which will also require a double pole brake switch for converter lock up control. This can also be purchased from BP Automotive, P/N TCC-001.
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