Blazer 2WD V6-4.3L VIN X (2004)
Data Link Connector: Description and Operation
DATA LINK CONNECTOR (DLC)
The data link connector (DLC) allows a scan tool to communicate with the class 2 modules. The DLC is a standardized 16 cavity connector located
below the instrument panel and close to the steering column. Connector design and location is dictated by an industry wide standard, and it is required to
provide the following:
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Scan tool power battery positive voltage at terminal 16.
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Scan tool power ground at terminal 4.
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Class 2 serial data signal at terminal 2.
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Common signal ground at terminal 5.
