GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Using a test light, backprobe between C201 terminal A1 and ground.
  2. Depress and hold the brake pedal.

Does the test light illuminate?

--

Go to Step 3

Go to Step 2

2

Repair a poor connection or an open in circuit 17 between S205 and C201 terminal A1.

Has the repair been made?

--

Go to Exterior Lights System Check

--

3

  1. Using a test light, backprobe between C201 terminal E6 and ground.
  2. Depress and hold the brake pedal.

Does the test light illuminate?

--

Go to Step 5

Go to Step 4

4

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

Has the repair been made?

--

Go to Exterior Lights System Check

--

5

Repair a poor connection or open in circuit 350 between S406 and S402.

Has the repair been made?

--

Go to Exterior Lights System Check

--