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?

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Go to Step 2

Go to Power Door Locks System Check

2

Is the automatic door lock customization function set to the ALL DOOR LOCK mode?

--

Go to Step 3

Go to Step 5

3

Do all of the doors lock and unlock with the keyless entry transmitter?

--

Go to Step 4

Go to Remote Keyless Entry System Check

4

Replace the driver door module (DDM).

Refer to Front Door Module Replacement .

Did you complete the repair?

--

Go to Power Door Locks System Check

--

5

Set the automatic door lock customization function to the ALL DOOR LOCK mode.

Refer to Keyless Entry System Operation in Keyless Entry.

Did you complete the repair?

--

Go to Power Door Locks System Check

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