GM OE and Professional ignition modules have key features such as the lead connections are electronically welded, they include a copper slug heat sink, a large bus bar and feature laser trimming. ACDelco ignition modules are put through a variety of tests, often under extreme or unusual conditions, to help deliver quality parts you expect from ACDelco.
https://www.gmparts.com/parts/ignition - Learn more about Ignition Modules
https://www.gmparts.com/parts-locator - Locate a Parts Retail Store
https://www.gmparts.com/service-locator - Find a Professional Service Center
