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Prepare ECU Connectors for Wiring Access

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Budget Turbo Yukon XL 4L80 Conversion (Part 4): THE WIRING CONVERSION LIFE HACK! The BEST Way!

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What happens here

Begin by removing any bolts securing the ECU connectors to the vehicle's chassis. The ECU for this 2003 GMC Yukon XL has two main connectors, one green and one blue. By releasing the clips, the connectors can be pulled away from the ECU, providing better access for wiring modifications. Remove the small retaining clips from the connectors that hold the wiring harness in place.

Goal: Gain access to the ECU wiring for modification

Tools and materials

  • 7mm Wrench — Removing the bolts securing the ECU connectors
  • Flathead Screwdriver — Assisting with unclipping stubborn connectors

What they say

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as long as you can read and you choose to read it should be okay here anybody who's messing with pins under an almost 20 year old crusty ass yukon xl these are the kind of people these are the people that make the world go around you guys rotation of the earth is caused by boosted ls motors all right guys this is part four of the 4l80 conversion

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