GM Service Manual Online
For 1990-2009 cars only

Head-Up Display Inoperative

Step

Action

Value(s)

Yes

No

DEFINITION: Head-up display does not illuminate.

1

Were you sent here from the IPC Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

  1. Turn OFF the ignition.
  2. Turn ON the ignition, with the engine OFF.

Does the IPC perform a complete sweep test (minimum to maximum) on all gauges?

--

Go to Step 3

Go to Diagnostic System Check - Instrument Cluster

3

  1. Turn OFF the ignition.
  2. Move the head-up display dimmer switch to the full bright position.
  3. Turn ON the ignition, with the engine OFF.

Do all segments of the head-up display illuminate for 3.5 seconds?

--

System OK

Go to Step 4

4

Inspect for poor connections at the harness connector of the head-up display switch and IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs

Did you find and correct the condition?

--

Go to Step 10

Go to Step 5

5

Inspect for poor connections at the harness connector of the head-up display . Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs

Did you find and correct the condition?

--

Go to Step 10

Go to Step 6

6

Test the head-up display switch circuit for a short to ground, short to voltage, or an open. Refer to Circuit Testing and Wiring Repairs

Did you find and correct the condition?

--

Go to Step 10

Go to Step 7

7

Replace the head-up display switch. Refer to Head Up Display Switch Replacement .

Did you find and correct the condition?

--

Go to Step 10

Go to Step 8

8

Replace the head-up display . Refer to Instrument Cluster Head Up Display Replacement .

Did you find and correct the condition?

--

Go to Step 10

Go to Step 9

9

Replace the IPC assembly. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

--

Go to Step 10

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10

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 2