Please help!!! All lights on gauges coming on!! - Page 4 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

nicave13@gmail.com · 08-02-2012, 04:07 PM

Got U0121 loss of comm with EBCM after unplugging and removing the ABS controller. Part was off for 2 days re-installed it keeps throwing the code. All associated lights are on... GM wants to charge $150 just to look, outa warranty Any thoughts? Tried unplugging all again, battery reboot, overnight fuse pull of all computer and bcm related fuses.

Not back to shop till next week, any thoughts at all?

Thank you

nicave13@gmail.com · 08-03-2012, 10:35 AM

So I tried everything and more!!! Leave it to my 21 yr old GF, Rita, did you check all the fuses? Well, the thing is... It was dark when I pulled them, blah, blah,blah, no. I pulled them all for a reboot, but didn't actually inspect each one. See attached, second to last fuse, #40 for you guessed it, ABS pump. Light went right off, whew!!! Glad the dealer couldn't get me in, I'd be out $150 for a $.15 fuse.

Thanks everybody, lesson learned, don't overthink things, and yes listen to women

goldcoastmat · 11-05-2014, 09:02 AM

Having same issue now, dropped it off at my tuner that just installed my headers and custom tune about 2 weeks ago.

Hoping it's a simple fix.

Sandman799 · 06-23-2016, 11:49 AM

So yeah ok my 2014 Camaro LS2/2LS which is completely stock has been throwing on the Brake, ABS and Stabiltrak lights but drives fine, seems to happen randomly at startup but it never comes on while driving, it only comes on and stays on whenever I start the car, and then the next time I Start the car the lights are off, it can happen a few times a day or not at all for a couple days, I still have 7 months left on the 3/36,000 bumper to bumper warranty plus I have an extended 3/36,000 bumper to bumper all inclusive warranty too, plus the other factory warranties, so I am covered under the warranties either way, but I don't want to have to let my car go for a few days to weeks and maybe even months before getting it fixed and back to me? So it seems this could be as simple as a fuse or as bad as the ECM, BCM, or EBCM? And it all depends on the dealer and Chevy as to how long I'll be without Baby? Yes my car is named Baby, it just is and that's how I want it but name aside what's what? I'd also have to rent a car while the problem is being fixed and that's not an option financially especially if the car ends up in the shop for weeks or a month or two? Do the math, a small compact car is $50.00 a day, that's $250.00 a week at the weekly rate or $350.00 a week at the daily rate and $1400.00 a month and $2800.00 for two months and if they don't provide a loaner or cover the rental I'm walking until I get my car back?? Anyway hope someone else has a fix for this? I'll check everything I've read in this post but I want to know if anyone else has had this problem on a 2014 Camaro and if so how did you fix it?

Sandman799

08-02-2012, 04:07 PM	#43
nicave13@gmail.com LED god Drives: 2010 Inferno Orange Camaro SS/RS Join Date: Oct 2010 Location: Las Vegas, NV Posts: 537	Got U0121 loss of comm with EBCM after unplugging and removing the ABS controller. Part was off for 2 days re-installed it keeps throwing the code. All associated lights are on... GM wants to charge $150 just to look, outa warranty Any thoughts? Tried unplugging all again, battery reboot, overnight fuse pull of all computer and bcm related fuses. Not back to shop till next week, any thoughts at all? Thank you __________________ See my Build Thread http://www.camaro5.com/forums/showth...75#post4741775

08-03-2012, 10:35 AM	#44
nicave13@gmail.com LED god Drives: 2010 Inferno Orange Camaro SS/RS Join Date: Oct 2010 Location: Las Vegas, NV Posts: 537	Yeah, I'm that stupid... So I tried everything and more!!! Leave it to my 21 yr old GF, Rita, did you check all the fuses? Well, the thing is... It was dark when I pulled them, blah, blah,blah, no. I pulled them all for a reboot, but didn't actually inspect each one. See attached, second to last fuse, #40 for you guessed it, ABS pump. Light went right off, whew!!! Glad the dealer couldn't get me in, I'd be out $150 for a $.15 fuse. Thanks everybody, lesson learned, don't overthink things, and yes listen to women Attached Images __________________ See my Build Thread http://www.camaro5.com/forums/showth...75#post4741775

11-05-2014, 09:02 AM	#45
goldcoastmat Drives: 2013 2SS/RS convertable Join Date: Aug 2014 Location: Florida, United States Posts: 153 View My Garage	Having same issue now, dropped it off at my tuner that just installed my headers and custom tune about 2 weeks ago. Hoping it's a simple fix. __________________ 2013 2SS/RS Vert Mods list to long to fit in sig now lol Check build thread http://www.camaro5.com/forums/showthread.php?t=377507

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06-23-2016, 11:49 AM	#46
Sandman799 Drives: Baby is a 2014 Black Camaro LS2/2LS Join Date: Jun 2016 Location: Tooele Utah Posts: 17 View My Garage	So yeah ok my 2014 Camaro LS2/2LS which is completely stock has been throwing on the Brake, ABS and Stabiltrak lights but drives fine, seems to happen randomly at startup but it never comes on while driving, it only comes on and stays on whenever I start the car, and then the next time I Start the car the lights are off, it can happen a few times a day or not at all for a couple days, I still have 7 months left on the 3/36,000 bumper to bumper warranty plus I have an extended 3/36,000 bumper to bumper all inclusive warranty too, plus the other factory warranties, so I am covered under the warranties either way, but I don't want to have to let my car go for a few days to weeks and maybe even months before getting it fixed and back to me? So it seems this could be as simple as a fuse or as bad as the ECM, BCM, or EBCM? And it all depends on the dealer and Chevy as to how long I'll be without Baby? Yes my car is named Baby, it just is and that's how I want it but name aside what's what? I'd also have to rent a car while the problem is being fixed and that's not an option financially especially if the car ends up in the shop for weeks or a month or two? Do the math, a small compact car is $50.00 a day, that's $250.00 a week at the weekly rate or $350.00 a week at the daily rate and $1400.00 a month and $2800.00 for two months and if they don't provide a loaner or cover the rental I'm walking until I get my car back?? Anyway hope someone else has a fix for this? I'll check everything I've read in this post but I want to know if anyone else has had this problem on a 2014 Camaro and if so how did you fix it? Sandman799