S10/T10 Blazer 2WD V6-262 4.3L VIN Z (1994)
Data Link Connector: Description and Operation
ALDL Connector
PURPOSE
The Data Link Connector (DLC) provides a means of communicating with the PCM concerning engine and transmission operating parameters and
accessing Diagnostic Trouble Codes (DTC).
OPERATION
The PCM communicates a variety of information through the Serial Data Line (DLC terminal "M"). The data is transmitted at a high frequency which
requires a Tech 1 diagnostic computer (scan) tool for interpretation. There are several other non-OEM scan tools available for displaying the same
information.
LOCATION
The Data Link Connector is located in the passenger compartment.
