GM Service Manual Online
For 1990-2009 cars only

A Diagnostic Starting Point -- Manual Transmission

Reviewing the description and operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the description and operation information will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - Manual Transmission in order to identify the correct procedure for diagnosing the system and where the procedure is located.