GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Starting and Charging System Check?

--

Go to Step 2

Go to Starting System Check

2

Does the engine emit a high pitched whine during cranking but the engine cranks and fires OK?

--

Go to Step 3

Go to Step 4

3

Decrease the distance between the starter drive pinion and the flywheel.

Has the noise disappeared?

--

System OK

--

4

Does the engine emit a high pitched whine as the ignition key is being released, but the engine cranks and fires OK?

--

Go to Step 5

Go to Step 6

5

Increase the distance between the starter drive pinion and the flywheel.

Has the noise disappeared?

--

System OK

--

6

Does the engine make a loud whoop after the engine fires as the starter drive pinion is still engaged?

--

Go to Step 8

Go to Step 7

7

Does the engine rumble, growl or knock as the starter motor is coasting down to a stop after the engine is started?

--

Go to Step 8

Go to Step 9

8

Repair or replace the starter drive

Has the noise disappeared?

--

System OK

--

9

Repair or replace the starter armature.

Has the noise disappeared?

--

System OK

--