GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

  1. Connect a scan tool.
  2. Inspect for engine or automatic transmission DTCs.

Are any DTCs set?

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Diagnostic Trouble Code (DTC) List - Vehicle

Go to Step 2

2

  1. Turn the ignition OFF.
  2. Disconnect the engine control module (ECM) connector.
  3. Remove the instrument cluster.
  4. Inspect continuity between terminal 3 of the vehicle speed sensor connector and the instrument cluster connector terminal 2.

Does the ohmmeter indicate the specified value?

0 ohms

Go to Step 4

Go to Step 3

3

Repair the open circuit between the instrument cluster connector terminal 2 and terminal 3 of the vehicle speed sensor connector.

Is the repair complete?

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System OK

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4

Replace the speedometer.

Is the repair complete?

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System OK

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