GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Door Locks System Check?

--

Go to Step 2

Go to Power Door Locks System Check

2

Are both of the actuators inoperative?

--

Go to Step 4

Go to Step 3

3

Is the left actuator inoperative?

--

Go to Step 7

Go to Step 16

4

Test for a open using a J 39200 DMM in the BLU/BLK wire or in SP252.

Does the circuit have an open?

--

Go to Step 6

Go to Step 5

5

Replace the multifunction alarm module. Refer to Multifunction Alarm Module Replacement .

Is the repair complete?

--

Go to Power Door Locks System Check

--

6

Repair the open in the BLU/BLK wire between the multifunction alarm module connector cavity 3 and the SP252. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

7

Test the WHT/BLK wire using a J 39200 DMM and SP550/SP551for an open.

Does the circuit have an open?

--

Go to Step 8

Go to Step 9

8

Repair the open in the WHT/BLK wire between the LH door lock actuator and chassis G200. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

9

Using a test lamp, probe the LH lock actuator connector cavity 6 to ground.

Does the test lamp illuminate when you trigger the switch to UNLOCK?

--

Go to Step 10

Go to Step 11

10

Using a test lamp, probe the LH lock actuator connector cavity 5 to ground.

Does the test lamp illuminate when you trigger the switch to LOCK?

--

Go to Step 13

Go to Step 14

11

Test the BLU/RED wire using a J 39200 DMM for an open.

Does the wire have an open?

--

Go to Step 12

Go to Step 5

12

Repair the open in the BLU/RED wire between the actuator connector and the alarm connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

13

Replace the LH door lock actuator. Refer to Door Lock Switch Replacement .

Is the repair complete?

--

Go to Power Door Locks System Check

--

14

Test the BLU/BLK wire and SP252 using a J 39200 DMM for an open.

Does the circuit have an open?

--

Go to Step 15

Go to Step 5

15

Repair the open in the BLU/BLK wire between the LH door lock actuator connector cavity 5 and the SP252. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

16

Test the WHT/BLK wire, SP650, and SP250 using a J 39200 DMM for an open.

Does the circuit have an open?

--

Go to Step 17

Go to Step 18

17

Repair the open in the WHT/BLK wire between the RH front door lock actuator and chassis G200. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

18

Using a test lamp, probe the RH lock actuator connector cavity 1 to ground.

Does the test lamp illuminate when you trigger the switch to UNLOCK?

--

Go to Step 19

Go to Step 20

19

Using a test lamp, probe the RH lock actuator connector cavity 2 to ground.

Does the test lamp illuminate when you trigger the switch to LOCK?

--

Go to Step 22

Go to Step 23

20

Test the GRN/WHT wire using a J 39200 DMM between the RH lock actuator and alarm module for an open.

Does the wire have an open?

--

Go to Step 21

Go to Step 5

21

Repair the open in the GRN/WHT wire between the RH front door lock actuator connector cavity 1 and the alarm connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

22

Replace the RH front door lock actuator. Refer to Power Door Lock Actuator Replacement .

Is the repair complete?

--

Go to Power Door Locks System Check

--

23

Test the BLU/BLK wire and SP252 using a J 39200 DMM for an open.

Does the circuit have an open?

--

Go to Step 24

Go to Step 5

24

Repair the open in the BLU/BLK wire between the RH front door lock actuator connector cavity 2 and SP252. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--