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

--