GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Theft Deterrent System Schematics

1

Did you review the Theft Deterrent Description and Operation and the necessary inspections?

Go to Step 2

Go to Symptoms - Theft Deterrent

2

Arm the theft deterrent system.

Does the security indicator remain steady for 10 seconds and then flash?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Inspect the security indicator circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 7

Go to Step 4

4

Replace the security indicator. .

Did you find and correct the condition?

Go to Step 7

Go to Step 5

5

Inspect for poor connections at the harness connector of the anti-theft module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 7

Go to Step 6

6

Replace the anti-theft module. Refer to Theft Deterrent Module Replacement .

Is the repair complete?

Go to Step 7

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7

Operate the system to verify the repair.

Did you correct the condition?

System OK

Go to Step 2