GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Disconnect the brake switch connector.
  2. Connect a fused jumper between terminal A and terminal B of the brake switch harness connector.
  3. Disconnect the high mounted stop lamp assembly connector.
  4. Connect a test lamp between terminal A of the high mounted stop lamp assembly harness connector and ground.

Does the test lamp light?

--

Go to Step 2

Go to Step 3

2

Connect the test lamp between terminal A and terminal B of the high mounted stop lamp assembly harness connector.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

3

Repair the open in CKT 17 between splice S206 and the high mounted stop lamp assembly. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

4

Replace the high mounted stop lamp assembly.

Is the repair complete?

--

Go to Exterior Lights System Check

--

5

Repair the open in CKT 150 between the high mounted stop lamp assembly and splice S330. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--