GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Check the park brake for proper adjustment. Refer to Park Brake Cable Service/Adjustment .

Is adjustment within specifications?

--

Go to Step 2

Go to Step 4

2

  1. Disconnect and remove the park brake linkage travel switch from the actuator.
  2. Connect a DMM across the park brake linkage travel switch terminals.
  3. Measure the resistance.

Is the resistance more than the stated value?

1 ohms

Go to Step 3

Go to Step 5

3

Replace the park brake linkage travel switch. Refer to Park Brake Travel Switch Replacement .

Is the repair complete?

--

System OK

--

4

Adjust the park brake. Refer to Park Brake Cable Service/Adjustment .

Is adjustment within specifications?

--

Go to Functional Test

--

5

  1. Disconnect the park brake control module connector.
  2. Connect a DMM from the park brake linkage travel switch terminal A to park brake control module terminal A6.
  3. Measure resistance.

Is the resistance less than the stated value?

5 ohms

Go to Step 6

Go to Step 9

6

  1. Connect a DMM from the park brake linkage travel switch terminal B to chassis ground.
  2. Measure resistance.

Is the resistance less than the stated value?

5 ohms

Go to Step 7

Go to Step 8

7

Replace the park brake control module. Refer to Park Brake Control Module Replacement .

Is the repair complete?

--

System OK

--

8

Locate and repair open in CKT 150 (BLK) between the park brake linkage travel switch and S219.

Is the repair complete?

--

System OK

--

9

Locate and repair open in CKT 1935 (TAN) between the park brake linkage travel switch and the park brake control module.

Is the repair complete?

--

System OK

--