GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2002 🢒 SL1/SC1 🢒 Engine 🢒 Engine Controls - 1.9L 🢒 Powertrain Control Module Replacement

Removal Procedure

    Object Number: 865817 Size: SH
  1. Record the preset radio stations.

    2. Notice: Refer to Battery Disconnect Caution in the Preface section.

  2. Disconnect the negative battery cable.
  3. Disconnect the PCM J2 black 28-way harness connector by moving the locking device toward the fender.
  4. Remove the PCM J1 black 80-way connector bolt and disconnect.
  5. Remove the powertrain control module (PCM) attachment bolts and remove the PCM.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 865817 Size: SH

    Notice: Ground strap must be attached to the PCM attachment bolt. The ground strap is a case ground that provides electromagnetic wave interference (EMI) protection. Correct torque is critical.

  1. Install the PCM and attachment bolts.

    2. Tighten
    Tighten the PCM attachment bolts to 9 N·m (80 lb in).

    Important: PCM connector bolt torque is critical.

  2. Connect the PCM J1 black 80-way connector and install the attachment bolt.

    3. Tighten
    Tighten the PCM connector-to-PCM bolt to 8 N·m (71 lb in).

  3. Connect the PCM J2 black 28-way connector and engage the locking device.
  4. Connect the negative battery cable.
  5. Reset the clock and preset radio stations.

    6. Important: Steps 6-10 should only be performed if a new PCM was installed.

    Important: If a new PCM is being installed, it MUST be reprogrammed with new software and calibrations. Refer to Service Stall System (SSS) User Guide for reprogramming procedures. The PCM may be damaged if the reprogramming process is interrupted. Ensure the scan tool is connected securely to the DLC and the vehicle battery has sufficient charge. Ensure the original PCM has the correct VIN and vehicle options.

  6. Reprogram the PCM. Refer to the Service Stall System (SSS) User Guide for reprogramming procedures.

    7. Important: The new PCM must learn the Passlock password from the body control module (BCM). When the PCM reprogram is completed, the ignition MUST be cycled for the PCM to allow the engine to be started. The password will have immediately learned the password before the key was cycled OFF.

  7. Turn the ignition OFF for 10 seconds.
  8. Turn the ignition ON.

    9. Important: Following the PCM reprogramming, the PCM will have to learn the crankshaft notch variation for misfire diagnostics.

  9. Perform the Crankshaft Position Variation Learn Procedure. Refer to DTC P1336 . This procedure will flash the SERVICE telltale.
  10. Verify no DTCs exist. If one exists, refer to the specific DTC diagnostic.