GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Disconnect connector C220.
  2. Turn the ignition switch to the RUN position and the engine OFF.

Is the LOW oil indicator on?

--

Go to Step 2

Go to Step 4

2

Inspect for a short to ground in CKT 1173 between the instrument cluster and connector C220.

Did you repair a short?

--

Go to Instrument Cluster System Check

Go to Step 3

3

Service the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Instrument Cluster System Check

--

4

Inspect CKT 1173 for a short to ground between connector C200 and the powertrain control module (PCM).

Did you repair a short?

--

Go to Instrument Cluster System Check

Go to Powertrain On Board Diagnostic (OBD) System Check (V6) or Powertrain On Board Diagnostic (OBD) System Check (V8) in Engine Controls