GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Instrument Cluster System Check performed?

--

Go to Step 2

Go to Instrument Cluster System Check

2

  1. Place the ignition switch in the RUN position.
  2. Observe the temperature gauge indication.

Is the temperature gauge indication greater than the specified value?

118.3°C (245°F)

Go to Step 3

Go to Step 4

3

Refer to Engine Coolant Temperature Gauge Always Hot .

Is the check gauges indicator lamp still always illuminated?

--

Go to Step 4

Go to Instrument Cluster System Check

4

  1. Start the engine.
  2. Observe the oil pressure gauge indication.

Does the oil pressure gauge indicate pressure less than the specified value?

34.5 kPa (5 psi)

Go to Step 5

Go to Step 6

5

Refer to Engine Oil Pressure Gauge Always Low .

Is the check gauges indicator lamp still always illuminated?

--

Go to Step 6

Go to Instrument Cluster System Check

6

Is the check gauges indicator lamp illuminated?

--

Go to Step 7

Go to Instrument Cluster System Check

7

Replace the instrument cluster. Refer ro Instrument Cluster Replacement .

Is the check gauges indicator lamp still always illuminated?

--

--

Go to Instrument Cluster System Check