Determining the correct Actron scan tool for your 1994 or 1995 General Motors vehicle requires a few steps due to variations in engine computer systems. This guide outlines the process to identify the compatible Actron scanner, including the CP9125, for your specific vehicle.
Locating the Powertrain Control Module (PCM)
First, locate the PCM, the vehicle’s computer. Its location and appearance will provide initial clues about your vehicle’s diagnostic system.
-
Under the Hood: If you find a black box with cooling fins under the hood, your vehicle likely uses the OBD II system. Verify this by checking the emissions decal, also located in the engine compartment. OBD II compliant vehicles are compatible with several Actron scan tools, including the Actron CP9125 PocketScan Code Reader, CP9135 OBD II AutoScanner, CP9138S SPANISH OBD II AutoScanner, CP9145 SUPER AutoScanner, and CP9150 SUPER AutoScanner Kit.
-
Inside the Vehicle: If the PCM is a silver box located inside the vehicle’s cabin, proceed to the next step.
Identifying the Diagnostic Link Connector (DLC)
Next, locate the DLC, usually found under the dashboard on the driver’s side. The DLC’s shape and pin configuration determine the necessary scan tool.
-
16-Pin D-Shaped Connector: This indicates an OBD I system with an OBD II style connector. The Actron CP9145 SUPER AutoScanner or the CP9150 SUPER AutoScanner Kit are compatible with this setup.
-
12-Pin Rectangular Connector: Proceed to the next step to further identify the correct tool.
Checking for Pin “B” on 12-Pin Connectors
For 12-pin DLCs, the presence or absence of Pin “B” determines the correct diagnostic procedure.
-
Pin “B” Present: Utilize the Actron CP9001 GM Code Scanner, the CP9145 SUPER AutoScanner with the CP9127 GM ALDL Cable, or the CP9150 SUPER AutoScanner Kit.
-
Pin “B” Absent: Use the Actron CP9145 SUPER AutoScanner with the CP9127 GM ALDL Cable or the CP9150 SUPER AutoScanner Kit.
Following these steps ensures you select the appropriate Actron scan tool, including the possibility of using the CP9125, for diagnosing your 1994 or 1995 GM vehicle accurately.
