GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Corvette 🢒 Engine 🢒 Engine Electrical 🢒 Starting System Check

Starting Diagnostic System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Inspect the battery for proper installation.
  2. Inspect the battery for cracking or other damage.
  3. Inspect the battery terminals for proper connection.
  4. Inspect the battery terminals for excessive corrosion.
  5. Inspect the battery cables for proper installation.
  6. Check that all ground connections are clean and tight.
  7. Inspect the battery hydrometer (eye) for a green dot.
  8. Connect a DMM between the battery's positive and negative terminals.
  9. Ensure that any aftermarket accessory equipment is de-energized.
  10. Observe the battery voltage.
    • The battery is properly installed.
    • The battery is free from physical damage.
    • The battery terminals are free from corrosion.
    • The battery cables are properly connected.
    • The battery cables are properly installed.
    • The battery hydrometer displays a green dot.
    • Battery voltage is approximately between 11.5 to 13.0 volts.
    • Battery does not meet minimum voltage requirements. Refer to Battery Charging .

2
  1. Remove the DMM from the battery terminals.
  2. Perform a load test on the battery. Refer to Battery Check

Battery maintains a specified voltage level according to the manufacturer's battery rating.

Battery does not maintain the specified voltage level during the load test. Replace the battery. Refer to Battery Replacement

3
  1. Install the scan tool to the diagnostic link connector.
  2. Turn the ignition switch to the ON position.
  3. Select display DTC function with the scan tool.
  4. Check for any stored PCM, BCM, or communication DTCs related to theft deterrent, starting or charging system operation.

No DTCs are stored in memory or current status.
    • DTC is stored in memory or current status (refer to appropriate DTC table).

4
  1. Turn the ignition switch to the OFF position.
  2. Remove the scan tool from the diagnostic link connector.
  3. Connect a DMM between the battery's positive and negative terminals.
  4. Ensure that all accessory equipment is de-energized.
  5. Start the engine and allow it to idle in PARK.
  6. Observe the battery voltage while starting the engine.
    • The starter solenoid engages as the ignition key is placed in the start position.
    • The starter motor operates without whine while cranking the engine.
    • Battery voltage while cranking the engine does not drop below 9.5 volts.
    • The engine starts and operates without driveability symptoms.
    • The starter stops operating when the ignition key is released from the START position.
    • The starter motor does not whine after the engine has started.
    •  Starter No Load Test

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.