GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Inspect fuse F3-F4.

Is the fuse open?

--

Go to Step 2

Go to Step 3

2

Repair a short to ground in circuit 1840.

Is the repair complete?

--

Go to Diagnostic System Check - Lighting Systems

--

3

  1. Turn the ignition switch to the RUN position.
  2. Using a test light, backprobe between C201 terminal E9 and ground.

Does the test light illuminate?

--

Go to Step 5

Go to Step 4

4

Repair a poor connection or an open in circuit 1840.

Is the repair complete?

--

Go to Diagnostic System Check - Lighting Systems

--

5

  1. Turn on the hazard lamps.
  2. Using a test light, backprobe between C201 terminal E6 and ground.

Does the test light illuminate?

--

Go to Step 7

Go to Step 6

6

Replace the turn signal switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column - Tilt.

Is the repair complete?

--

Go to Diagnostic System Check - Lighting Systems

--

7

Repair a poor connection or an open in circuit 1508 between C201 terminal E9 and the hazard lamp/turn signal lamp flasher harness connector terminal A1.

Is the repair complete?

--

Go to Diagnostic System Check - Lighting Systems

--