Diagnostic Starting Point. Buick GL7 (Export) 2000

For 1990-2009 cars

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