GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Power Door Locks System Check performed?

--

Go to Step 2

Go to Power Door Locks System Check

2

Does the left front power door lock switch perform both the unlock and the lock operation?

--

Go to Step 8

Go to Step 3

3

Does the left front power door lock switch perform only the unlock operation?

--

Go to Step 4

Go to Step 5

4

  1. Disconnect the left front power door lock switch connector.
  2. Connect a J 39200 between pin E, and pin A of the left front power lock switch.
  3. Depress the left front power door lock switch to perform the lock operation.

Is continuity present?

--

Go to Step 13

Go to Step 14

5

Does the left front power door lock switch perform only the lock operation?

--

Go to Step 6

Go to Step 7

6

  1. Disconnect the left front power door lock switch connector.
  2. Connect a J 39200 between pin E, and pin D of the left front power lock switch.
  3. Depress the left front power door lock switch to perform the unlock operation.

Is continuity present?

--

Go to Step 15

Go to Step 14

7

  1. Disconnect the left front power door lock switch connector.
  2. Connect an unpowered test lamp between the left front power door lock switch connector, cavity E for CKT 540 (ORN), and ground.

Does the test lamp light?

--

Go to Step 14

Go to Step 16

8

Does the right front power door lock switch perform only the unlock operation?

--

Go to Step 9

Go to Step 10

9

  1. Disconnect the right front power door lock switch connector.
  2. Connect a J 39200 between pin E, and pin A of the left front power lock switch.
  3. Depress the right front power door lock switch to perform the lock operation.

Is continuity present?

--

Go to Step 17

Go to Step 18

10

Does the right front power door lock switch perform only the lock operation?

--

Go to Step 11

Go to Step 12

11

  1. Disconnect the right front power door lock switch connector.
  2. Connect a J 39200 between pin E, and pin D of the right front power lock switch.
  3. Depress the right front power door lock switch to perform the unlock operation.

Is continuity present?

--

Go to Step 19

Go to Step 18

12

  1. Disconnect the right front power door lock switch connector .
  2. Connect an unpowered test lamp between the right front power door lock switch connector, cavity E for CKT 540 (ORN), and ground.

Does the test lamp light?

--

Go to Step 18

Go to Step 20

13

Repair the open in CKT 195 (LT BLU) between splice S241 and the left front door lock switch.

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Power Door Locks System Check

--

14

Replace the left front power door lock switch.

Refer to Door Lock Switch Replacement .

Is the repair complete?

--

Go to Power Door Locks System Check

--

15

Repair the open in CKT 194 (WHT) between splice S242 and the left front door lock switch.

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Power Door Locks System Check

--

16

Repair the open in CKT 540 (ORN) between splice S228 and the left front door lock switch.

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Power Door Locks System Check

--

17

Repair the open in CKT 195 (LT BLU) between splice S241 and the right front door lock switch.

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Power Door Locks System Check

--

18

Replace the right front power door lock switch.

Refer to Door Lock Switch Replacement .

Is the repair complete?

--

Go to Power Door Locks System Check

--

19

Repair the open in CKT 194 (WHT) between splice S242 and the right front door lock switch.

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Power Door Locks System Check

--

20

Repair the open in CKT 540 (ORN) between splice S228 and the right front door lock switch.

Refer to Wiring Repairs .

Is the repair complete?

--

Go to Power Door Locks System Check

--