2016 cadillac srx 3.6 stalled and won't restart, just a black screen when you press the start button. Fresh batteries in the remotes, battery...

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Thank you for your response. Have you already contact your dealer? There is a big possibility that the Body Control Module needs to be updated. Advise them to have it check by using a OB2 Scanner to make sure to diagnose the correct issue. But for me the Body Control Module needs to be updated. Hope this helps.

I see. If there is a way you can update the Body Control Module or if you can contact your dealer for them to do it for you.

I understand Mark. Please try the following steps below and see which one will helps to start your vehicle. If the first solution worked you don't need to proceed with the second solution.

Solution 1

1. Disconnect the negative battery cable.
2. Wait for 15-30 minutes.
3. Reconnect the battery cable.
4. Start it and drive it around for at least an hour so that the computer box to relearn new variables.

Solution 2

1. Open the hood and look for the fuse box.
2. Pull the fuse that is for the ECU/ECM.
3. Wait for 30 minutes.
4. Reconnect the fuse or if you have a new one try to replace it and then start the car.
5. Let it idle for 5 minutes, then go drive around so the vehicle can relearn and adjust.

Solution 3

1. Turn your key to the accessory position.
2. Disconnect the positive battery cable.
3. Wait for 30 seconds.
4. Tap the pos terminal cable to the pos battery post for three times.
5. Reconnect the terminal cable.
6. Start the vehicle and let it idle for a few minutes, then drive around normally.

If you can do this on your own you can proceed with the steps. This is one of the first AID solution I normally do to reset the the computer of the car. If the following steps I provided did not work, that is the time that you need to remove the BCM (Body Control Module) and have the dealer test it or if you have a good mechanic who can check it to see if they can reset it or update it.

No worries Mark. Just keep me posted for updates. I will leave this page open, Have a great day ahead of you.

Thank you for your response. You mentioned you have new fresh batteries for the remote the battery of the car is good and replace the battery cable are all good now and what you get is a click sound. Hmmm. Have you check your starter? A failed stater also cause a car not to start. If you already checked this then you can proceed with the other options. Because making your car not to start the most common issue are dead battery, alternator issue, faulty wires and blown fuses, and starter issue. Hope this make sense. Just keep me posted and will keep this page open.

Have that check as well Mark. These are the culprit that I see causing the issue.

I would like to follow up if your issue is already resolved or you still needs further assistance. I will leave this page open and will wait for your response. If I don’t catch you this time, please respond with a few times (including your timezone) that work best for you and we can connect then.

Copy that Mark.

Thank you for your response. Try to unplug and reconnect the BCM without reprogrming, but you should disconnect the battery before unplugging electronic modules. Some are quite sensitive and might be damaged if the battery isn't disconnected first. IF by doing this is still the same then you have to check the starter.

Hi Mark. Any updates?

Just keep me posted for any updates. Have a great day ahead of you.

I would like to follow up if your issue is already resolved or you still needs further assistance. I will leave this page open and will wait for your response. If I don’t catch you this time, please respond with a few times (including your timezone) that work best for you and we can connect then.