GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Exterior Lights System Check?

--

Go to Step  2

Go to Exterior Lights System Check

2

  1. Disconnect the turn/hazard flasher connector.
  2. Connect the test lamp between terminal 2 of the turn/hazard flasher harness connector and ground.

Does the test lamp illuminate?

--

Go to Step  3

Go to Step  4

3

  1. Turn the hazard switch to the ON position.
  2. Connect the fused jumper between terminal 2 and terminal 3 of the turn/hazard flasher harness connector.

Do the hazard lamps illuminate but not flash?

--

Go to Step  5

Go to Step  6

4

Repair the open in CKT 140 between the fuse block and the turn/hazard flasher. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Exterior Lights System Check

--

5

Replace the turn/hazard flasher.

Did you complete the repair?

--

Go to Exterior Lights System Check

--

6

  1. Reconnect the turn/hazard flasher connector.
  2. Disconnect the turn/hazard headlamp switch assembly connector.
  3. Connect a fused jumper wire between terminal D and F of the turn/hazard headlamp switch assembly harness connector C2.

Does the left front turn lamp flash?

--

Go to Step  8

Go to Step  7

7

Repair the open in CKT 27 between the turn/hazard flasher and the turn/hazard - headlamp switch assembly. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Exterior Lights System Check

--

8

Replace the turn/hazard - headlamp switch assembly.

Did you complete the repair?

--

Go to Exterior Lights System Check

--

Hazard Lamps Inoperative Left

Step

Action

Value(s)

Yes

No

1

Replace the turn/headlamp/hazard switch assembly.

Is the repair complete?

--

Go to Exterior Lights System Check

--

Hazard Lamps Inoperative Right

Step

Action

Value(s)

Yes

No

1

Replace the turn/headlamp/hazard switch assembly.

Is the repair complete?

--

Go to Exterior Lights System Check

--