GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was Instrument Cluster System Check performed?

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Go to Step 2

Go to Instrument Cluster System Check

2

  1. Ensure that the engine is running.
  2. Press ENG/MET control button.

Does IP display switch from ENG to MET ?

--

Go to Instrument Cluster System Check

Go to Step 3

3

  1. Turn the ignition switch to the ON (engine not running) position.
  2. Connect scan tool.
  3. Select the IPC inputs menu.
  4. Press the ENG/MET button.

Does the ENG/MET switch input toggle from ON to OFF when button is pressed?

--

Go to Step 11

Go to Step 4

4

Inspect the DSPL mode button.

Does the DSPL mode button work?

--

Go to Step 5

Go to Step 8

5

  1. Ignition switch OFF.
  2. Disconnect the LH DIC switch connector.
  3. Connect a fused jumper between the terminals 4, CKT 811 (LT BLU) and 7, CKT 351 (BLK/WHT).
  4. Ignition switch ON.

When the jumper is added and removed does the ENG/MET switch input toggle from ON to OFF?

--

Go to Step 10

Go to Step 6

6

Inspect CKT 811 (LT BLU) for an open or short to ground.

Was there a problem with CKT 811?

--

Go to Step 7

Go to Step 11

7

Repair CKT 811 (LT BLU).

Is the repair complete?

--

Go to Instrument Cluster System Check

--

8

Inspect CKT 351 (BLK/WHT) for an open.

Was there a problem with CKT 351?

--

Go to Step 9

Go to Step 10

9

Repair CKT 351 (BLK/WHT).

Is the repair complete?

--

Go to Instrument Cluster System Check

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10

Replace the LH IPC control (DIC) switch. Refer to Driver Information Display Switch Replacement .

Is the repair complete?

--

Go to Instrument Cluster System Check

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11

Replace the Instrument Cluster (IPC). Refer to Instrument Cluster Replacement .

Is the instrument cluster (IPC) replacement complete?

--

Go to Instrument Cluster System Check

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