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 door lock relay terminal A and the ground.
  2. While observing the test light, press any door lock switch to the LOCK position.

Does the test light illuminate?

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Go to Step 2

Go to Step 3

2

  1. Inspect for a poor connection at the door lock relay terminal A.
  2. If the connection is OK, replace the door lock relay.

Is the repair complete?

--

Go to Step 4

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3

Repair the poor connection or an open in CKT 195 between the door lock relay and S313.

Is the repair complete?

--

Go to Step 4

--

4

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

Have all repairs been completed?

--

Go to Power Door Locks System Check

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