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*NO RESPONSE FROM TCM (CONTINUED) 3. (Z908) (Z977) GROUND CIRCUIT OPEN Turn the ignition off. Disconnect the PCM C4 harness connector. CAUTION: Do not probe the PCM harness connectors. Probing Does the test light illuminate brightly for each circuit? Yes >> Replace and program the Powertrain Control Module in accordance with the service information. No >> Repair the ground circuit for an open. Perform the appropriate TRANSMISSION VERIFICATION HB ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS 8E - 181 |