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Powertrain Control Module

These models use the Service Programming System (SPS) to reprogram the PCM and other modules. The SPS allows a technician to program a control module through the Data Link Connector (DLC). See POWERTRAIN CONTROL MODULE 3.4L or POWERTRAIN CONTROL MODULE 3.8L under PROGRAMMING in appropriate SELF-DIAGNOSTICS article in FAULT ISOLATION in ENGINE PERFORMANCE.