GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Door Lock System Check?

--

Go to Step 2

Go to Power Door Locks System Check

2

Can the suspect door lock switch lock the door?

--

Go to Step 3

Go to Step 6

3

Test for an open in the BLU/YEL wire using a J 39200 DMM from the suspected door lock switch connector.

Does the wire have an open?

--

Go to Step 5

Go to Step 4

4

Replace the suspected door lock switch.

Is the repair complete?

--

Go to Power Door Locks System Check

--

5

Repair the open in the BLU/YEL wire. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

6

Can the suspect door lock switch unlock the door?

--

Go to Step 7

Go to Step 9

7

Test for an open in the BLU/WHT wire using a J 39200 DMM from the suspected door lock switch connector.

Does the wire have an open?

--

Go to Step 8

Go to Step 4

8

Repair the open in the BLU/WHT wire. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

9

Test for an open in the WHT/BLK wire us a J 39200 DMM coming from the door lock switch connector.

Does the wire have an open?

--

Go to Step 10

Go to Step 4

10

Repair the open in the WHT/BLK wire. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--