GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Tahoe Z71 🢒 Body and Accessories 🢒 Lighting Systems 🢒 High Beam Indicator Inoperative

High Beam Indicator Inoperative Headlamp

Step

Action

Value(s)

Yes

No

1

Did you perform the Headlight System Check?

--

Go to Step 2

Go to Headlight System Check

2
  1. Place the headlamp and panel dimmer switch in the headlamps position.
  2. Observe that the headlamps are lit.
  3. Operate the headlamp dimmer switch in order to select the high beam position.
  4. Disconnect the instrument cluster connector.
  5. Connect a test lamp between the instrument cluster connector, cavity 5 for CKT 11 (LT GRN), and ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

Connect a self-powered test lamp between the instrument cluster connector, cavity 4 for CKT 451 (BLK/WHT), and ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

4

Repair the open in CKT 11 (LT GRN) between splice S125 and the instrument cluster. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Headlight System Check

--

5

Is the high beam indicator bulb good?

--

Go to Step 7

--

6

Repair the open in CKT 451 (BLK/WHT) between the instrument cluster and ground G103 or ground G104. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Headlight System Check

--

7

Replace the instrument cluster.

Is the repair complete?

--

Go to Headlight System Check

--

High Beam Indicator Inoperative DRL

Step

Action

Value(s)

Yes

No

DEFINITION: This diagnostic procedure should only be used to diagnose the high beam indicator only if the high beam headlamps are operational.

1

Did you perform the DRL System Check?

--

Go to Step 2

Go to Daytime Running Lights (DRL) System Check

2
  1. Disconnect the instrument cluster connector.
  2. Connect a test lamp from the instrument cluster connector, cavity 4, to B+.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3
  1. Move the headlamp and panel dimmer switch to the ON position.
  2. Move the headlamp dimmer switch to the HIGH position.
  3. Connect a test lamp from the instrument cluster connector, cavity 5, to ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

4

Repair the open in CKT 451 (BLK/WHT) between the instrument panel connector and ground. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

5

Inspect the high beam indicator beam bulb in order to determine if the bulb is operative.

Is the bulb operative?

--

Go to Step 7

Go to Step 8

6

Repair the open in CKT 11 (LT GRN) between the instrument cluster connector and splice S225. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

7

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--

8

Replace the high beam indicator bulb. Refer to Instrument Cluster Bulb Replacement .

Is the repair complete?

--

Go to Daytime Running Lights (DRL) System Check

--