Painless Performance 60221 Standard Length EFI Harness for 2003-2006 GM Gen III 4.8, 5.3 & 6.0L w/Throttle by Wire

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. This harness is designed for use on the 1999-2006 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 Vortex Trucks. 1999-2002 engines will require installing a 2003-2006 TBW throttle body. 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 fuse block and ECM mount. Perfect for those that plan to mount these components under the dash or in the glove box. Includes: All new fuel injection harness with OEM fitment connectors and harness breakouts, OBDII connector, mounting bracket and check engine light, crimp-on terminals, rubber grommet and mounting hardware. We recommend checking the online manual for the full list of required mating parts prior to ordering.

• Painless fuel injection wiring utilizes all new TXL wire, OEM fitment connectors and grouped harness breakouts making for an easy install and saving you from using old re-worked wiring; Machine crimped terminals match OE quality
• Every EFI harness is tested before leaving our facility, ensuring that each connector is properly pinned out and seated no chasing miss-pinned connections with Painless EFI wiring
• Diagnostic port and check engine light included with powder coated bracket, allowing you to check codes and troubleshoot just like a new OE vehicle
• When reliability and performance can't be compromised, you want TXL Wire - not the inexpensive primary wire you find in other harnesses; High strand count copper and high-quality insulation makes for high abrasion resistance and easy routing
• American Made, American Proud Since 1990: Every Painless harness is proudly produced in Fort Worth, TX, where we also staff our unmatched Technical Support department. ; Need help during install simply give us a call
• Fit type: Universal Fit