Related Terms • Manual Transmission

Definition: A type of transmission that shifts itself. A fluid coupling or torque converter is used instead of a manually operated clutch to connect the transmission to the engine. Newer automatics use electronic controls to regulate shifting and torque converter lockup.

Related Resources:

Diagnosing GM Converter Lock-Up Problems
Understanding and diagnosing the most common type of General Motors transmission problems

Diagnose Automatic Transmission Problems
What you can do to diagnose an automatic transmission problem.