Gledewen Standalone Wiring Harness for GM LS1 Vortec | 4L60E/4L80E | Red/Blue PCM

Gledewen presents a purpose-built Standalone Wiring Harness designed for GM 1997–2006 LS1 Vortec engines paired with drive-by-c cable throttles and 4L60E or 4L80E transmissions. The red/blue PCM design aids quick identification of connections, while the harness itself is crafted for reliability and a clean, plug-and-play installation that fits under the dash or in the right-side kick panel. This kit emphasizes robust electrical performance, accurate connector alignment, and heat-resistant cabling so you can complete the swap with confidence and less troubleshooting.

Key Benefits

• Premium copper core wires deliver strong conductivity with low resistance and high reliability.
• 12–14 volt compatibility supports standard GM fuel injection systems and sensors.
• 1200°F fiberglass braid and high-temperature insulation protect circuits in harsh engine bays.
• New GM Delphi connectors and TXL high-temperature wires meet GM specifications for durability.
• Universal color code and reinforced ring terminals enable straightforward plug-and-play wiring.

• Complete LS swap package: engine and transmission harness, EV1 fuel injector connectors, 6 fuse blocks, 3-wire MAF sensor, and crank sensor wiring.
• Professional installation guidance included with a detailed parts list to reduce guesswork.
• Fully wired to mount neatly under the dash or in a right-side kick panel for tidy routing.
• Brand-new condition with factory quality checks for reliable performance.

Compatibility and Installation Notes

This harness supports 1997–2006 drive-by-cable LS1 engines with 4L60E or 4L80E transmissions (adapter available). It does not include EGR, Air Pump, or CCP provisions. VATS must be removed from the PCM, and some PCM programming may be required to avoid diagnostic trouble codes related to missing emission equipment.

Note that individual vehicle configurations vary. Review your electrical layout and sensor connections during install, and consult your technician if PCM programming or sensor compatibility questions arise. This description highlights the features and potential benefits of the product and does not guarantee specific performance outcomes.