GM Service Manual Online
For 1990-2009 cars only

All Doors Do Not Lock

Step

Action

Value(s)

Yes

No

1

Was the Power Door Locks System Check Performed?

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Go to Step 2

Go to Power Door Locks System Check in Doors

2

  1. Reprogram all transmitters. Refer to Transmitter Programming .
  2. Perform the LOCK feature again.

Does the LOCK function work on all of the doors after performing the transmitter programming procedure?

--

System OK

Go to Step 3

3

  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the Remote Control Door Lock Receiver (RCDLR) connector.
  3. Disconnect the door lock relay connector.
  4. Measure the resistance between the RCDLR harness connector terminal R and door lock relay harness connector terminal A using a Digital Multimeter (DMM).

Is the resistance within the specified range?

Less than 2 ohms

Go to Step 4

Go to Step 5

4

Replace the RCDLR. Refer to Receiver Replacement .

Is the repair complete?

--

System OK

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5

Repair the following conditions in CKT 195 between the RCDLR and S313:

    • A poor connection
    • An open

Is the repair complete?

--

System OK

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