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CAT ET 2021A
Caterpillar Electronic Technician (Cat ET) is diagnostic software required to communicate, diagnose and service electronically controlled Caterpillar engines and machines.
When connected to an Electronic Control Module (ECM), a technician has the ability to diagnose existing and potential problems,
configure the product, and obtain data for analysis.
Here is the latest version of Caterpillar Electronic Technician 2021A. ( 513 MB )