gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Converter Shudder|Page 4740 > < A/T - Intermittent Downshift, Slip or Busy/Cycling TCC|Page 4737
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Torque Converter Clutch: Testing and Inspection
Converter Shudder

1.

Converter clutch pressure plate damaged.

2.

Check ball on end of turbine shaft damaged.

3.

Sticking converter clutch shift valve in valve body.

4.

Sticking converter clutch apply valve in valve body.

5.

Restricted converter clutch apply passage.

6.

Low oil or oil pressure.

7.

Engine not tuned properly.

Converter Shudder|Page 4740 > < A/T - Intermittent Downshift, Slip or Busy/Cycling TCC|Page 4737