GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Place the transmission in PARK.
  2. Turn the ignition switch to RUN, leaving the engine off.

The voltmeter shows approximately 12 V.

Charging System Check

2

Turn the ignition switch to START.

The engine cranks normally and the starter does not make unusual noises.

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