GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Use a test light in order to backprobe between the inoperative door lock switch terminal A and the ground.
  2. While observing the test light press the inoperative door lock switch to the UNLOCK position.

Does the test light illuminate?

--

Go to Step 2

Go to Step 3

2

Repair a poor connection or an open in circuit 194 between the inoperative door lock switch and S312.

Is the repair complete?

--

Go to Step 4

--

3

  1. Check for a poor connection at the inoperative door lock switch.
  2. If connection is OK, then replace the inoperative door lock switch.

Is the repair complete?

--

Go to Step 4

--

4

  1. Make sure the ignition switch is in the LOCK position.
  2. Reconnect any connectors/components removed.

Have all repairs been made?

--

Go to Power Door Locks System Check

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