GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Turn the ignition switch to the ON position.

    • The engine coolant temperature (ECT) gauge indicates the current engine coolant temperature.
    • The fuel gauge indicates the approximate fuel level.
    • The oil pressure indicator lights.

2

Start the engine.

    • The oil pressure indicator goes out.
    • The tachometer (if equipped) indicate the engine rpm.

3

Run the engine until attaining the normal operating temperature.

The ECT gauge indicates current ECT.

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