GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Perform the keyless entry transmitter test. Refer to Transmitter Test .

  2. Test the keyless entry system.

Did the keyless entry system operate normally?

--

System OK

Go to Step 2

2

  1. Disconnect the BCM connector C2.
  2. Connect a test lamp from connector C2 terminal B to terminal A.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

  1. Test for poor connections to the BCM.
  2. If the connections are OK, replace the BCM.
  3. Refer to Body Control Module Replacement .

Is the repair complete?

--

System OK

--

4

Repair the open or a bad connection in circuit 40 between the BCM and fuse 8.

Is the repair complete?

--

System OK

--