GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the theft deterrent diagnostic system check?

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Go to Step 2

Go to Diagnostic System Check - Theft Deterrent

2

Perform one of the following to activate the CTD Alarm Mode:

Operate the PANIC button on the keyless entry transmitter.

OR

  1. Open the driver's window.
  2. Lock the vehicle using the power door lock switch.
  3. Wait for the SECURITY indicator to go off.
  4. Reach in and unlock the driver's door.
  5. Open the driver's door.

Do all of the Alarm mode functions activate (lights flash and horn pulses)?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Do the hazard lamps operate properly?

--

Go to Step 4

Go to Diagnostic Starting Point - Lighting Systems  in Lighting Systems

4

Test the dash integration module (DIM) theft control circuit for an open.

Did you find and correct the condition?

--

Go to Step 6

Go to Step 5

5

Replace the DIM.

Did you complete the repair?

--

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3