GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Exterior Lights System Check?

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Go to Step 2

Go to Exterior Lights System Check

2

  1. Disconnect the turn signal flasher connector.
  2. Connect a J 39200 digital multimeter (DMM) between the turn signal flasher connector cavity H (ORN) and ground.

Is the voltage within the specified range?

10-15 V

Go to Step 3

Go to Step 5

3

Connect a DMM between the turn signal flasher connector cavity H (ORN) and cavity A (BLK).

Is the voltage within the specified range?

10-15 V

Go to Step 4

Go to Step 6

4

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

Is the turn signal flasher replacement complete?

--

Go to Exterior Lights System Check

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5

Repair the open in CKT 540 (ORN) between the underhood junction block and the turn signal flasher. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

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6

Repair the open in CKT 350 (BLK) between the turn signal flasher and G202. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

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