Daysyore W/4L80E Standalone Swap Wiring Harness for 2003-2007 Chevy GMC Cadillac

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Subtotal: $310.99
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Free shipping to the continental US

Free Returns
Free 30 days return
Vehicle Info Required to Guarantee Fit


Weight: 3.5kg

Warranty: 12 months

Package Dimensions: 15.12 x 8.86 x 7.68 inches

Engine and transmission sensor connectors: 

  • ALDL Connector
  • 7 ATO Style Fuse Block
  • Fuel Pump Relay
  • Switched Power Ignition Relay
  • Cruise Control Wiring
  • Performance Shift Mode Wiring
  • MIL Light Wiring
  • P/N Wiring
  • TCC/Switch Wiring
  • Tach Wiring
  • Complete Detailed Instructions


2003-2007 Chevy GMC Cadillac


  • Simplified Installation;
  • Plug-and-Play Compatibility;
  • Time and Cost Savings;
  • Reliable Electrical Connections;
  • Enhanced Functionality;
  • Professional Quality and Reliability.

Returns Policy

Thanks for choosing Daysyore. All of our Daysyore products are strictly tested by our quality inspection team before shipment, if you find any quality issue, please email us at

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

The refund will be processed within 7 working days after the receipt and validation of return. Please check your account then.


Do you ship internationally?

NO, We have our own warehouse in the United States and we only ship to the United States.

How much is the shipping?

Free shipping on all items

Shipping method?


Shipping Time?

Processing time: 1-3 Business days

Shipping time: US: 3-5 Business days

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