GM Service Manual Online
For 1990-2009 cars only

Important: 

  1. Perform Diagnostic System Check - Engine Electrical before using the Symptom Tables in order to verify that all of the following are true:
  2.    • There are no DTCs set.
       • The control module(s) can communicate via the serial data link.
  3. Review the following system operation in order to familiarize yourself with the system functions: , , , and .
  4.    •  Starting System Description
       •  Starting System Circuit Description
       •  Battery Description
       •  Charging System Description
       •  Charging System Circuit Description

Visual/Physical Inspection

    • Inspect for aftermarket devices which could affect the operation of the Starting and Charging System. Refer to Checking Aftermarket Accessories in Wiring Systems.
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

    •  Starter Solenoid Does Not Click
    •  Starter Solenoid Clicks, Engine Does Not Crank
    •  Engine Cranks Slowly
    •  Battery Inspection/Test
    •  Battery Circuit Description
    •  Charging System Test