GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Tahoe Z71 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Hazard Lamps Inoperative

Step

Action

Value(s)

Yes

No

1

Did you perform the Exterior Lamps System Check?

--

Go to Step 2

Go to Exterior Lights System Check

2
  1. Turn the ignition switch to the RUN position.
  2. Place the turn signal in the ON position.

Does the turn signal operate?

--

Go to Step 8

Go to Step 3

3

Connect a test lamp from CKT 139 (PNK) at connector C266, terminal A2, to ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 12

4
  1. Ensure that the turn signal is in the ON position.
  2. Connect a test lamp from CKT 1508 (LT BLU) at connector C266, terminal A3, to ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 13

5

Connect a test lamp from CKT 1508 (LT BLU) and CKT 150 (BLK) at the turn/hazard flasher, terminal H9 to terminal G8.

Does the test lamp light?

--

Go to Step 7

Go to Step 6

6
  1. Ensure that the turn signal is in the ON position.
  2. Connect a test lamp from CKT 1508 (LT BLU) at the turn signal/hazard flasher, terminal H9, to ground.

Does the test lamp light?

--

Go to Step 14

Go to Step 15

7
  1. Turn the turn signal to the OFF position.
  2. Connect a self-powered test lamp from CKT 1697 (PPL) from the turn/hazard flasher, terminal H7, to connector C266, terminal E9.

Does the test lamp light?

--

Go to Step 11

Go to Step 16

8

Connect a test lamp from CKT 140 (ORN) at connector C266, terminal E8, to ground.

Does the test lamp light?

--

Go to Step 9

Go to Step 17

9
  1. Turn the hazard switch to the ON position.
  2. Connect a test lamp from CKT 1696 (GRY) at connector C266, terminal E1, and ground

Does the test lamp light?

--

Go to Step 10

Go to Step 13

10

Connect a test lamp from CKT 1696 (GRY) at the turn/hazard flasher, terminal H8, and ground.

Does the test lamp light?

--

Go to Step 18

Go to Step 19

11
  1. Turn the hazard switch to the ON position.
  2. Reconnect the turn/hazard flasher.
  3. Connect a test lamp from CKT 1697 (PPL) at connector C266, terminal E9, and ground.

Does the test lamp light?

--

Go to Step 13

Go to Step 18

12

Repair the open in CKT 139 (PNK) between the instrument panel fuse block and connector C266. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

13

Replace the turn/hazard switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle .

Is the repair complete?

--

Go to Exterior Lights System Check

--

14

Repair the open in CKT 150 (BLK) between the turn/hazard flasher and ground G200. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

15

Repair the open in CKT 1508 (LT BLU) between the turn/hazard flasher and ground G200. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

16

Repair the open in CKT 1697 (PPL) between the turn/hazard flasher and connector C266. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

17

Repair the open in CKT 139 (ORN) between connector C266 and the instrument panel fuse block. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

18

Replace the turn/hazard flasher.

Is the repair complete?

--

Go to Exterior Lights System Check

--

19

Repair the open in CKT 1696 (GRY) between the turn/hazard flasher and connector C266. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--