Check for body control module (BCM) diagnostic trouble codes (DTCs).

Is DTC 25/35 displayed?

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Go to Step 2

Go to Step 3

Replace the BCM. Refer to Body Control Module Replacement .

Is the repair complete?

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System OK

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1. Check for a poor connection at the BCM connector C3 terminal C16.
2. Check for a poor connection at the security LED.

Are the connections OK?

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Go to SECURITY Indicator Inoperative

Go to Step 4

1. Repair the connections as needed.
2. Disconnect the battery.
3. Re connect the battery.

Is the repair complete?

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System OK

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