Gen 3 (24x) DBW 4L80 transmission
This show quality wiring harness is for use with any Gen 3 (24x) LSx engine using a Drive-By-Wire (DBW) electronic throttle body. This wiring harness may be used with LS1 or LS6 (5.7L) car style engines, or Vortec (4.8L, 5.3L, 6.0L) truck style engines - mated with a 4L80E transmission.
The depicted computer (PCM) is NOT included. A reconditioned PCM (with project specific programming) way be ADDED to your purchase using the dropdown menu options.
*** A modified engine will likely require additional custom programming (not included) for optimal performance and drivability ***
This system is ONLY compatible with the 2003 to 2007 (classic) 8 pin Truck electronic throttle body. The Truck electronic throttle body may be installed on an LS1 or LS6 Intake Manifold. This system does NOT include an Electronic Accelerator Pedal (APP), nor a Throttle Actuator Control (TAC) Module.
The main trunk of the wiring harness - from the back of the Intake Manifold to the PCM - is approximately 48 inches in length (4 feet). This harness length allows the PCM to be mounted inside the vehicle occupant compartment, but it could also be mounted within the engine compartment if so desired. An OEM grade Firewall Grommet is incorporated into the construction of each wiring harness, and may be positioned (slid) to any location on the main trunk length.
The wiring harness includes a Powertrain Control Relay (isolation relay) and a Fuel Pump Relay. The electric fan "trigger wires" are labeled, but would need to be wired into your relay(s). A prewired Fan Relay is optional at an additional cost - see the related dropdown option. All connections are clearly labeled, and general instructions are provided.
Please choose very carefully from all of the dropdown options. If you are uncertain about an option, please email us BEFORE ordering, for a more detailed explanation of the option. Any returned Powertrain Control System would be subject to a restocking fee - see our Terms & Conditions page.