GM Service Manual Online
For 1990-2009 cars only

Headlamps Inoperative - Right High Beam Standard

Step

Action

Value(s)

Yes

No

1

Did you perform the Lighting Systems Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Verify that the right high beam headlamp is inoperative.

Do the headlamps operate normally?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the headlamp, RH high beam connector.
  2. Move the headlamp switch to the HEAD position.
  3. Move the multifunction switch to the HIGH BEAM position.
  4. Connect a test lamp from headlamp, RH high beam connector terminal A to ground. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 5

Go to Step 4

4

Locate and repair the open or high resistance in CKT 198 (DK BLU) between the headlamp RH high beam bulb and the underhood fuse block. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 8

--

5

Connect a test lamp from headlamp RH high beam connector terminal A to terminal B. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 7

Go to Step 6

6

Locate and repair the open or high resistance in CKT 524 (PPL) between the headlamp RH high beam connector and the underhood fuse block. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 8

--

7

Replace the headlamp RH high beam bulb. Refer to Headlamp Replacement .

Is the repair complete?

--

Go to Step 8

--

8

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3

Headlamps Inoperative - Right High Beam Envoy/Diamond Edition 1SK

Step

Action

Value(s)

Yes

No

1

Did you perform the Lighting Systems Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Verify that the right high beam headlamp is inoperative.

Do the headlamps operate normally?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Move the headlamp switch to the HEAD position.
  2. Move the multifunction switch lever to the HIGH BEAMS position.
  3. Connect a test lamp between ground and terminal A of the RH High Beam connector. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 5

Go to Step 4

4

Locate and repair the open, high resistance or short to ground in CKT 311 (LT GRN/BLK). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 10

--

5

Connect a test lamp between terminal A and terminal B of the RH High Beam connector. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 6

Go to Step 7

6

Replace the right high beam bulb. Refer to Headlamp Replacement .

Is the repair complete?

--

Go to Step 10

--

7

Remove the DRL Relay from the Underhood Fuse Block and install a fused jumper between terminal 3 and terminal 4 of the DRL Relay connector.

Does the RH High Beam operate?

--

Go to Step 9

Go to Step 8

8

Locate and repair the open or high resistance in CKT 1193 (LT GRN) or CKT 350 (BLK) Refer to Wiring Repairs in Wiring Systems..

Is the repair complete?

--

Go to Step 10

--

9

Replace the DRL Relay.

Is the repair complete?

--

Go to Step 10

--

10

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3