GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition switch to the RUN position.
  2. Using a test light, backprobe the hazard lamp/turn signal lamp flasher harness connector terminal A1 and ground.

Does the test light illuminate?

--

Go to Step 3

Go to Step 8

2

Repair a poor connection or an open in circuit 1450 between the hazard lamp/turn signal lamp flasher harness connector terminal B2 to G200.

Has the repair been made?

--

Go to Exterior Lights System Check

--

3

Using a test light, backprobe between the hazard lamp/turn signal flasher harness connector terminal B2 and B+.

Does the test light illuminate?

--

Go to Step 5

Go to Step 2

4

Replace the hazard lamp/turn signal flasher. Refer to Hazard and Turn Signal Flasher Replacement .

Has the repair been made?

--

Go to Exterior Lights System Check

--

5

Using a test light, backprobe between the hazard lamp/turn signal lamp flasher connector terminal C1 and terminal B2.

Does the test light flash?

--

Go to Step 7

Go to Step 4

6

Repair a poor connection or an open in circuit 16.

Has the repair been made?

--

Go to Exterior Lights System Check

--

7

Using a test light, backprobe connector C201 terminal A4 to ground.

Does the test light flash?

--

Go to Step 9

Go to Step 6

8

Repair a poor connection or an open in circuit I508.

Has the repair been made?

--

Go to Exterior Lights System Check

--

9

Replace the turn signal switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in steering wheel and column.

Has the repair been made?

--

Go to Exterior Lights System Check

--