GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1999 🢒 Catera 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L30-E 🢒 No Engagement of Torque Converter Clutch

No Engagement of Torque Converter Clutch for Cadillac Catera 1999

Causes

Action

The Solenoid Valve for the Converter Clutch is defective.

Refer to DTC P1870 Transmission Component Slipping .

There is an interruption in the Signal Circuit.

Perform the Line Pressure Check .

There is fluid loss in the Fluid Circuit of the Converter Clutch.
  1. Search for the leaking part.
  2. Replace the leaking part.