GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Body Control Module (BCM) System Check performed?

--

Go to Step 2

Go to Body Control Module System Check

2

  1. Start the engine.
  2. Use the Scan Tool in order to read the BCM to cluster data menu.

Is the VSS Signal reading active?

--

Go to Step 3

Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls--2.4L or Powertrain On Board Diagnostic (OBD) System Check in Engine Controls--3.1L

3

Inspect for a poor connection in CKT 817 at terminal A8 of the instrument cluster connector.

Is a poor connection evident?

--

Go to Step 4

Go to Step 5

4

Repair the poor connection in CKT 817 at terminal A8 of the instrument cluster connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Body Control Module System Check

--

5

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Body Control Module System Check

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