Painless Performance - 2003-2006 GM Gen III 4.8, 5.3 & 6.0L Throttle by Wire Harness Std. Length - 60221

2003-2006 GM Gen III 4.8, 5.3 & 6.0L Throttle by Wire Harness Std. Length - 60221

Engine: 4.8L, 5.3L, 6.0L w/ Throttle By Wire
Trans.: 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, or manual

This harness is standalone and is not intended to replace the OEM engine wiring.  Standalone harnesses are intended to run the designated engine & transmission only, generally when swapped into another vehicle.  

Painless LS swap wiring harnesses make getting your engine swap wired a simple task!

This harness is designed for use on the 2003-2006 4.8L, 5.3L, 6.0L throttle by wire engines with  a 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, or manual transmission. These engines were found in factory 2003-2006 Vortec Trucks.  Engine codes supported are LR4, LM7, LM4, LQ4 and LQ9. This harness will support flex fuel and non flex fuel engines. Flex fuel engines will require an inline fuel composition sensor in order to run E85 fuel. Included with this harness is a 10 circuit weatherproof fuse block & mounting bracket and GM color coded wires with labels for easy installation. 

This standard length harness allows four feet from the back of the intake manifold to where the fuseblock and ECM mount.  Perfect for those that plan to mount these components under the dash or in the glove box.

This kit includes:

1. All new fuel injection harness with OEM fitment connectors and harness breakouts
2. OBDII connector, mounting bracket and check engine light
3. Crimp-on terminals, rubber grommet
4. Mounting hardware

Specs:

Number of Circuits: 10 Fuses with 2 Ignition, 1 Cooling Fan & 1 Fuel Pump Relay
Harness Length: 4 Feet Between Engine and ECM
Fuse Type: Mini Blade
Firewall Passthrough: Grommet
Color Code Based:  1999 - 2006 C/K Truck
Circuit Designations: Printed Wire Tags on all Connectors and Open Ended Wires