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George H.
George H., ASE Certified Technician
Category: Cadillac
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Experience:  ASE Master Tech 15+ Years
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Cadillac

Where is the ECU located on my 2004 Cadillac CTS

Submitted: 6 years ago.
Category: Cadillac
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replied 6 years ago.

Hello I will help you with your question,

 

The ECU is located as shown in the diagram below

 

This is a view of the front of the passengers side of the engine below the throttle body

 

graphic