GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Attempt to unlock the right side door and left side door using the left door lock switch.

Do the doors unlock?

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Go to Step 2

Go to Power Door Locks - Unlock Inoperative Lock Operates

2

  1. Perform the keyless entry transmitter test. Refer to Transmitter Test .
  2. Attempt to unlock the right side door and left side door using the remote control door lock transmitter.

Do the doors unlock?

--

System OK

Go to Step 3

3

Replace the BCM.

Refer to Body Control Module Replacement .

Is the repair complete?

--

System OK

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