Service Engine Soon (SES) Light On, Torque Converter Clutch (TCC) Stuck On, Diagnostic Trouble Code (DTC) P0742 (Replace TCC Solenoid)

Some customers may comment that the Service Engine Soon (SES) light may be on and/or vehicle may be sluggish. DTC P0742 may be set.

This condition may be caused by a fluid leak around the TCC solenoid.

To correct this condition, replace the TCC solenoid.

1. Use the Tech2® to verify whether DTC P0742 is either active or in history.



2. Verify that the build date is within the julian date range 2 219 and 3 048.
3. Follow the Trouble Tree in this bulletin.
4. If the Trouble Tree indicates an intermittent concern or a faulty TCC Solenoid, use the appropriate Service Manual procedure and replace the TCC Solenoid.
5. If the Trouble Tree indicates another concern, correct that concern using the 2003 Saturn L-Series Service Manual, clear codes, and re-evaluate before performing further repairs.
6. Test drive vehicle after repairs to verify proper transaxle operation and SES light is not on.

Trouble Tree for 4T40E (RPO MN4)

Trouble Tree for 4T45E (MN5)

To receive credit for this repair during the warranty coverage period, submit a claim through the Saturn Dealer System for K6557.