GM Service Manual Online
For 1990-2009 cars only

Driver Information Center (DIC) Display Blank, Mode Indicator Changes with Mode Button w/ Trip Computer

Step

Action

Value(s)

Yes

No

1

Was the Driver Information Center System Check performed?

--

Go to Step 2

Go to Driver Information System Check

2

Has the vehicle been checked for diagnostic trouble codes (DTCs)?

--

Go to Step 3

Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Electrical - 2.2L or Powertrain On Board Diagnostic (OBD) System Check in Engine Electrical - 4.3L

3

  1. Disconnect the DIC connector.
  2. Connect the J 39200 digital multimeter (DMM) from the DIC connector terminal 14 to ground.

Is the voltage within the specified value?

10-14 V

Go to Step 5

Go to Step 4

4

Repair the following conditions in CKT 40 between the DIC connector terminal 14 and the CTSY LP fuse in the IP fuse block:

    • Opens
    • High resistance
    • A short to ground

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Driver Information System Check

--

5

  1. Turn the ignition switch to the RUN position.
  2. Connect a J 39200 digital multimeter (DMM) from the DIC connector terminal 7 to ground.

Is the voltage within the specified range?

10-14 V

Go to Step 7

Go to Step 6

6

Repair the following conditions in CKT 1301 between the DIC connector terminal 7 and the RDO IGN fuse in the IP fuse block:

    • Opens
    • High resistance
    • A short to ground

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Driver Information System Check

--

7

  1. Turn the ignition switch to the RUN position.
  2. Connect a J 39200 digital multimeter (DMM) from the DIC connector terminal 7 to terminal 8

Is the voltage within the specified range?

10-14 V

Go to Step 9

Go to Step 8

8

Repair the following conditions in CKT 451 between the DIC connector terminal 8 and G105:

    • Opens
    • High resistance
    • A short to battery voltage

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Driver Information System Check

--

9

Inspect the DIC connector for a poor connection.

Are the connections OK?

--

Go to Step 11

Go to Step 10

10

Repair the DIC connections as necessary. Refer to Wiring Repairs .

Is the repair complete?

--

Go to Driver Information System Check

--

11

Replace the DIC. Refer to Driver Information Center Module Replacement

Is the repair complete?

--

Go to Driver Information System Check

--

Driver Information Center (DIC) Display Blank, Mode Indicator Changes with Mode Button w/o Trip Computer

Step

Action

Value(s)

Yes

No

1

Was the Driver Information Center System Check Performed?

--

Go to Step 2

Go to Driver Information System Check

2

Inspect for any diagnostic trouble codes (DTCs) that may interfere with the operation of the driver information display module.

Are any DTCs set?

--

Go to the Applicable DTC

Go to Step 3

3

  1. Turn the ignition switch to the RUN position.
  2. Disconnect the DIC connector.
  3. Connect the J 39200 digital multimeter (DMM) from the DIC connector terminal 5 to ground.

Is voltage present?

10 - 14V

Go to Step 5

Go to Step 4

4

Inspect RDO IGN fuse 24.

Is the fuse blown?

--

Go to Step 9

Go to Step 6

5

Connect a test lamp from driver information display cavity 5 to cavity 6.

Does the test lamp light?

--

Go to Step 8

Go to Step 7

6

Locate and repair the open in CKT 1301 between the driver information display module and the IP fuse block. Refer to Wiring Repairs

Is the repair complete?

--

Go to Driver Information System Check

--

7

Locate and repair the open in CKT 451 between the driver information display module cavity 6 and G105. Refer to Wiring Repairs

Is the repair complete?

--

Go to Driver Information System Check

--

8

Replace the driver information display module. Refer to Driver Information Center Module Replacement .

Is the repair complete?

--

Go to Driver Information System Check

--

9

Locate and repair the short to ground in CKT 1301 between the driver information display module and the IP fuse block. Refer to Wiring Repairs

Is the repair complete?

--

Go to Driver Information System Check

--