Security Light stays on?

DT0WN86

MEMBER
2004 PONTIAC GRAND AM
3.4L
V6
2WD
AUTOMATIC
140,000 MILES

Okay, I originally had a problem with my BCM getting wet and had to replace it along with one of the connectors. Everything is good now, but my security light is always on, and my scanner says in relearn mode. I've done all the steps for the pass lock system, but it won't go out and my trunk release button doesn't work now. It runs and drives fine just that light stays on. Does anyone have a wire diagram for the BCM? I could have wired the connector wrong or something.

Tuesday, August 27th, 2024 AT 8:17 PM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
54,137 POSTS

Was the BCM programmed to the car? If not, this will be the problem.

Passlock Learn Procedures

IMPORTANT: If any module or device listed is replaced, programming of the module must be done prior to performing the Passlock Learn procedure.

Perform the Learn Procedure if any of the following components have been replaced:
- The body control module, BCM
- The Passlock sensor
- The powertrain control module PCM

IMPORTANT: After programming, perform the following to avoid future misdiagnosis:

1. Turn the ignition OFF for 10 seconds.
2. Connect the scan tool to the data link connector.
3. Turn the ignition ON with the engine OFF.
4. Use the scan tool in order to retrieve history DTCs from all modules.
5. Clear all history DTCs.

Here are the BCM wiring diagrams, check out the images (below). Please let us know what happens.

Images (Click to make bigger)