Torque Converter Replacement Guide

Condition	Action
Fluid
Transmission Fluid Oxidized/Discolored No metal debris Clutch fiber material	Do not replace the torque converter. Refer to Transmission Fluid Checking Procedure .
Transmission Fluid Contaminated with Engine Coolant/Oil	Replace the torque converter. Refer to Torque Converter Cover Replacement (LA1) or Torque Converter Cover Replacement (LY7) .
Transmission Fluid Contaminated with Sludge/Metal Particles	Replace the torque converter if the following conditions are found: Pump damage Drive sprocket support damage Turbine/stator shaft damage No damage found in transmission Do not replace the torque converter for other transmission component damage.
Fluid Leaks from Torque Converter	Perform the powder/dye leak check Refer to Fluid Leak Diagnosis . Replace the torque converter if the following conditions are found: Leak present at weld areas-hub, lug, or closure weld Hub surface is damaged-scored, raised/transferred metal Bushing is damaged
Function/Appearance
Torque Converter Discolored/Overheated	Replace the torque converter. Refer to Torque Converter Cover Replacement (LA1) or Torque Converter Cover Replacement (LY7) .
Broken/Cracked Flexplate	Replace the torque converter. Refer to Torque Converter Cover Replacement (LA1) or Torque Converter Cover Replacement (LY7) .
Stripped Converter Bolt Holes	Replace the torque converter. Refer to Torque Converter Cover Replacement (LA1) or Torque Converter Cover Replacement (LY7) .
Torque Converter Pilot Damaged	Replace the torque converter. Refer to Torque Converter Cover Replacement (LA1) or Torque Converter Cover Replacement (LY7) .
Torque Converter Ballooning	Replace the torque converter if end play exceeds 0.7mm (0.3 in) using J 35138 .
Driveability - Non TCC
Harsh Gear Shifts-Non TCC	Do not replace the torque converter. Refer to Symptoms - Automatic Transmission .
No Drive/Slips in Drive-Non TCC	Do not replace the torque converter until completing all engine and transmission diagnostics. Refer to Slips in Drive or No Drive .
Idle Surge/Rough Idle	Do not replace the torque converter. Refer to Rough, Unstable, or Incorrect Idle and Stalling in Engine Controls-3.4L.
Poor Acceleration above 48 km/h (30 mph) - Launch	Do not replace the torque converter until completing all engine and transmission diagnostics. Refer to Lack of Power, Sluggishness, or Sponginess in Engine Controls-3.4L. Refer to Hesitation, Sag, Stumble in Engine Controls-3.4L. Refer to Symptoms - Automatic Transmission .
DTC P0741-TCC Stuck OFF/High Slip-Intermittent Only	Do not replace the torque converter. Refer to DTC P0741 (3.4L) or DTC P0741 (3.6L) .
DTC P0741-TCC Stuck OFF/High Slip	Refer to DTC P0741 (3.4L) or DTC P0741 (3.6L) .
DTC P0742-TCC Stuck ON	Do not replace the torque converter. Refer to DTC P0742 (3.4L) or DTC P0742 (3.6L) .
DTC P1887-TCC Release Switch	Do not replace the torque converter. Refer to DTC P1887 (3.4L) or DTC P1887 (3.6L) .
TCC Apply/Release Shudder	Refer to Converter Clutch Apply Rough, Slips, or Shudders .
TCC Chuggle	Refer to Symptoms - Engine Mechanical in Engine Mechanical-3.4L. Refer to Surges/Chuggles in Engine Mechanical-3.4L. Refer to Symptoms - Automatic Transmission .
Noise and Vibration
Noise-Whine	Refer to Symptoms - Automatic Transmission . Do not replace the torque converter if noise is present in Neutral/Park. Refer to Symptoms - Engine Mechanical in Engine Mechanical-3.4L.
Vibration-Out of Balance	Refer to Flexplate/Torque Converter Vibration Test . Refer to Vibration Analysis - Engine in Vibration Diagnosis and Correction.