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Old 11-18-2014, 08:28 PM   #1
Zsolt
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Default Possible BCM Issue, please help. 2003 L200

Okay, so I'm going to make this as detailed as possible. Here goes:
The car: 2003 L200, 2.2L 5 speed Manual. 98,000 miles.
Bought it a few months ago, just got it on the road 4 days ago.
Before roading the car, I replaced the battery with a brand new optima red top.
I changed the oil with mobile one, and changed the filter.
Installed a set of HID lights, a known and trusted brand. As well as a 7 inch Kenwood GPS/dvd/CD entertainment system. All items were professionally installed.

The first 2 days I had no issues. The third day as I was driving to work, a 14 mile journey. And all of a sudden the dash lights flicker as the car security symbol ( the car and lock) flash. The gauges fall and rise randomly and as the gas gauge drops the empty tank light comes on. This then ends and I chalk it up to weird. On the way home it happens once again. I check the dimmer switch as I know of its history of having issues, but it works perfectly. Then today the ghost in the car returns on the highway, but as I pull into a gas station by my house to fill up, the dash lights go out, the wrench light comes on, as does the ABS light, and the red Airbag light.
My remote entry does not work, and nor does the internal "power lock" only the good old fashioned hand unlocking the pop up does the trick. Now, ALL of the interior lights are also now dead. The car runs and drives however, and all the headlights, fog, and high beams work fine. Radio is still working and so is the heat and the blower.

Is this a BCM?
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Old 11-18-2014, 09:08 PM   #2
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2003 L-Series 3.0L Sedan
2002 L-Series 3.0L Sedan
Default Re: Possible BCM Issue, please help. 2003 L200

Quote:
Originally Posted by Zsolt View Post
Okay, so I'm going to make this as detailed as possible. Here goes:
The car: 2003 L200, 2.2L 5 speed Manual. 98,000 miles.
Bought it a few months ago, just got it on the road 4 days ago.
Before roading the car, I replaced the battery with a brand new optima red top.
I changed the oil with mobile one, and changed the filter.
Installed a set of HID lights, a known and trusted brand. As well as a 7 inch Kenwood GPS/dvd/CD entertainment system. All items were professionally installed.
Ok, first off not identifing the HID doesn't give us a clear picture of what it is doesn't help to diagnosis problems either...so tell us or there can't be help here...I thought of using HID but unless your paying 200-300US and your HID aren't 33K that isn't true HID.

Quote:
Originally Posted by Zsolt View Post
The first 2 days I had no issues. The third day as I was driving to work, a 14 mile journey. And all of a sudden the dash lights flicker as the car security symbol ( the car and lock) flash. The gauges fall and rise randomly and as the gas gauge drops the empty tank light comes on. This then ends and I chalk it up to weird. On the way home it happens once again. I check the dimmer switch as I know of its history of having issues, but it works perfectly. Then today the ghost in the car returns on the highway, but as I pull into a gas station by my house to fill up, the dash lights go out, the wrench light comes on, as does the ABS light, and the red Airbag light.
My remote entry does not work, and nor does the internal "power lock" only the good old fashioned hand unlocking the pop up does the trick. Now, ALL of the interior lights are also now dead. The car runs and drives however, and all the headlights, fog, and high beams work fine. Radio is still working and so is the heat and the blower.

Is this a BCM?
What your describing sounds more like a electrical problem...and you sure your HID isn't part of the problem? What happens if you put it back to the normal setup does it do the same thing as well? That would be another test to know where the problem is coming from. Also some people have talked about crank sensor problem as well so take it out and do some measurements on it to see if it is in range. But I would say if you never had problem before and since you put HID and now you have problem I would say something with your HID or audio upgrade seems to be having a effect on your electrical system. You need to go and check your wiring and see what did they do and how was it done and know whom done it would help others know how good or bad they did the wiring as well. Professional doesn't always equate to good wiring....if it was done by Best Buy...I be suspect about it...and whom did the HID setup?
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Old 11-18-2014, 09:16 PM   #3
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Default Re: Possible BCM Issue, please help. 2003 L200

The work was not done by best buy, I have been doing HID and audio system installs for years. I did all my own work. Now, the car was not driven after purchase and prior to the HID upgrade. So as of now I will revert it back to the original set up of standard bulbs, though I can assure you, these HID's are true high end products, not the 100 dollar ebay crapola. As for the car as it sits, I disconnected and re-connected the battery as my co-worker has borrowed my code reader. ALL the light and fob and lock functions are back. Though my suspicion is that the issues will return as they have after a decent amount of consistent road time. I drove it around and its as if all is well. But we shall see. For now I'd like some input and in the coming 24 hours I will update based on what the car is doing with the factory spec headlight bulbs.
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Old 11-18-2014, 09:31 PM   #4
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Default Re: Possible BCM Issue, please help. 2003 L200

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Originally Posted by Zsolt View Post
Okay, so I'm going to make this as detailed as possible.

Is this a BCM?
I know you don't want to hear this but you started tricking out a 10 year old used car before it was properly "vetted'. My LW300's BCM and dash issues appeared exactly one week after I got it.
Nobody can tell if you had a prexisting issue or whatever...

I would attempt to pull the main power to the radio/DVD/bluetooth/GPS/AquaMan-summoner and the same with the HID if you can. Leave them "cold " for a few days and see if the condition changes.

//EDIT - I see your post above. Sounds like a plan. Stay cool whatever the issue is you'll fix it. Good luck
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Old 11-19-2014, 12:10 AM   #5
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Default Re: Possible BCM Issue, please help. 2003 L200

^^^I think it makes sense to try and return your entertainment/information system to a state similar to what it was before installation and find out what happens after that. If the instrument cluster will no longer flash its lights and will have no fluctuating gauges then you'll know that the BCM is working correctly. If that's the case, and hopefully it will be, you can then move on toward reviewing the recent installation.
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Old 11-19-2014, 12:32 AM   #6
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Default Re: Possible BCM Issue, please help. 2003 L200

Early L200's suffered severe battery cable corrosion from damaged side terminal batteries leaking battery acid from over tightening. The acid ate thru the copper wires hidden under the heavy insulation resulting in poor electrical connections and mystery power issues. If they're original, examine both battery cables carefully for hidden corrosion, cutting away insulation if necessary to be sure these cables aren't severely damaged, preventing full battery power to the car's electrical system. Check chassis and engine block grounds too. Once done, check battery voltages, engine off and on; at least 12v with engine off, 13.3v-14.7v with engine on.
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Old 11-19-2014, 12:44 PM   #7
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Default Re: Possible BCM Issue, please help. 2003 L200

Hey guys, so...

Reverted back to factory sylvania's as well as the oem Radio...bye bye "Aquaman Summoner" . And checked hidden corrosion on battery terminals as said. No issues. The voltages are perfect. I guess that new battery helps. However...and this is the big issue now.

The security light still flickers on and off randomly after driving for about 20 minutes. ANDDDDD....now the cherry on the top is that the fuel gauge reads DEAD EMPTY, and the water temperature gauge reads FULL HOT, the water temp red alert light is also on. No worries, I checked the fluid and it was not overheated, and the tank was filled last night. And even after disconnecting the battery for an hour this issue is here to stay.

Any ideas fellas? Thanks for all your help thus far.
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Old 11-19-2014, 02:18 PM   #8
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Default Re: Possible BCM Issue, please help. 2003 L200

1-Without referring to DRL wiring (unless necessary) HID lamps (as you know) require full 12v power to each ballast. Early Saturn DRL's used either the high or low beams wired thru a relay in series to reduce current while prolonging halogen lamp life. Once DRL's switch (automatically or manually) to night time lighting, the low beams revert back to parallel wiring for full power to each lamp. Not having wiring diagrams for a car risk running into mystery problems when HID lights are wired in series. Whether or not modified wiring to accommodate HID lights affect the body control module is anyone's guess. Disabling DRL's completely will allow wiring HID lights.

My guess is European lighting mandated daytime running lights but already allowed HID lights with 'angel eyes' used as DRL's since European lighting systems were always advanced, years ahead of antiquated USA headlight standards.

2-Security, fuel gauge, coolant temperature and coolant alert indicators are driven by the bcm with input from the ecm/pcm.

Flickering security while driving may suggest loose wiring in the Passlock circuitry. Main circuit is the sensor assembly by the ignition switch - 3 or 4 wires. Worse case scenario; security flashes quickly during starting, Passlock disabling injector operation to prevent engine running. A 10 minute Passlock reset is needed. Security light staying ON; Passlock failed and disables/deactivates itself to prevent interfering with starting/running your car.

Search threads about bcm symptoms, failures and diagnosing/troubleshooting it. Replacement is either a new blank one programmed by GM (only) or used ones retaining mileage from the donor car (mileage cannot be altered and remotes disabled until GM programs them to the replacement bcm).
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Old 11-19-2014, 02:32 PM   #9
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Default Re: Possible BCM Issue, please help. 2003 L200

Well as of now, no HID's are present. I'm using traditional bulbs. So to see if this solved the issue. Which it did not, (problem could have been caused by HID's, but I'll never know). At this point the issue has gone too far.

Please do go into detail about the loose wires however, I'm willing to try anything at this point. GM dealership (former Saturn Dealer) quoted me 652.70 plus tax for everything BCM. Or If I bring my own its 200 for the programming. I can buy a NEW AC Delco BCM for 235 on Rock Auto. So 435 versus 652.70 if in fact its the BCM gone bad.
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Old 11-19-2014, 10:24 PM   #10
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Default Re: Possible BCM Issue, please help. 2003 L200

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Originally Posted by Zsolt View Post
Well as of now, no HID's are present. I'm using traditional bulbs. So to see if this solved the issue. Which it did not, (problem could have been caused by HID's, but I'll never know). At this point the issue has gone too far.

Please do go into detail about the loose wires however, I'm willing to try anything at this point. GM dealership (former Saturn Dealer) quoted me 652.70 plus tax for everything BCM. Or If I bring my own its 200 for the programming. I can buy a NEW AC Delco BCM for 235 on Rock Auto. So 435 versus 652.70 if in fact its the BCM gone bad.
Hey why don't you check ALL bcm fuses. On my L300 some were under the hood and some were in the driver's kick panel. All had brown leads while inspecting them I cleaned them shiny with sandpaper. It seemed to reduce the episodes by about 80%. Try this.
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Old 11-20-2014, 02:16 PM   #11
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Default Re: Possible BCM Issue, please help. 2003 L200

Hey all,

So I checked ALL BCM fuses. And nothing seems bad. Took a multimeter to check ohms on all fuses. Everything seems solid. An addition to my fuel gauge consistently reading empty and my water temp gauge reading hot as Tartarus.
The mileage is no longer being tracked. It's stuck at 98012. And my trip meter won't read at all. So I bought the bcm, and will follow up once it's installed.
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Old 11-21-2014, 12:45 PM   #12
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Default Re: Possible BCM Issue, please help. 2003 L200

BCM arriving today. But since at this point I'm chuckling over the "ghost" in my car. I thought I'd share the laughter and tell you all that the latest and greatest in things happening is that the trunk will now open on its own while I drive. And the wipers will go on and off by themselves! yay
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