Product Details
Overview
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 Injectors, and a Manual or Non-Electric Transmission.
On 2003 and newer applications leave a note with your PCM service number (if your PCM is DBC capable) so we can install green retainers on the harness.



