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Hi all: didn't see any posts already asking about this, sorry if I just missed them, I'm sure I'm not the first person this happened to.
Started getting tons of alerts last week about the ABS/active handling/traction control systems needing attention. Local Chevrolet service department looked at it and said it could be a wire in the harness, which would be prohibitively expensive to diagnose, but also that it was likely an issue with the body control module and/or one of several other modules, and that not all of these could be replaced; the BCM, they said, already is no longer available from Chevrolet.
Is this a thing? Do I have any options? The only two I can think of is be out $35,000 and have to figure out how to dispose of a beautiful car or sell it along and make it someone else's problem (if it's a good day and the alerts haven't started back up again), and I hate both of those choices. People drive older cars than 2011s; is it really possible there's no solution here?
Hi all: didn't see any posts already asking about this, sorry if I just missed them, I'm sure I'm not the first person this happened to.
Started getting tons of alerts last week about the ABS/active handling/traction control systems needing attention. Local Chevrolet service department looked at it and said it could be a wire in the harness, which would be prohibitively expensive to diagnose, but also that it was likely an issue with the body control module and/or one of several other modules, and that not all of these could be replaced; the BCM, they said, already is no longer available from Chevrolet.
Is this a thing? Do I have any options? The only two I can think of is be out $35,000 and have to figure out how to dispose of a beautiful car or sell it along and make it someone else's problem (if it's a good day and the alerts haven't started back up again), and I hate both of those choices. People drive older cars than 2011s; is it really possible there's no solution here?
Thanks very much for any advice.
mike
If it is that which i doubt, you can get used parts.
What were the codes ???…dealerships are clueless when it comes to diagnosing as they will only replace a bunch of parts until they MIGHT fix your issue…find an auto electric shop or a diagnostic shop in your area…not a general repair shop.
What were the codes ???…dealerships are clueless when it comes to diagnosing as they will only replace a bunch of parts until they MIGHT fix your issue…find an auto electric shop or a diagnostic shop in your area…not a general repair shop.
thanks very much; the codes:
U0100
U0101
U0122
U0140
U2100
U2107
Their paperwork says these are codes for lost communication with the eng/powertrain control module, transmission control module, vehicle dynamics control module, bcm, can bus communication fault, and 2nd DTC for the bcm, respectively.
Yes, they are communication codes and a dealership will NOT know where to even start to diagnose this…as a new member it’s always a good idea to fill us in what model year and whatever other info that may be important…those messages you are seeing would relate to the EBCM and not the BCM…where are you located as I might know of a shop....sometimes multiple module no comms may be due to a weak battery...I'd get your battery checked.
Started getting tons of alerts last week about the ABS/active handling/traction control systems needing attention. Local Chevrolet service department looked at it and said it could be a wire in the harness, which would be prohibitively expensive to diagnose, but also that it was likely an issue with the body control module and/or one of several other modules, and that not all of these could be replaced; the BCM, they said, already is no longer available from Chevrolet.
Is this a thing? Do I have any options? The only two I can think of is be out $35,000 and have to figure out how to dispose of a beautiful car or sell it along and make it someone else's problem (if it's a good day and the alerts haven't started back up again), and I hate both of those choices. People drive older cars than 2011s; is it really possible there's no solution here?
The BCM, EBCM, BPMV and other critical pieces have been unavailable for years. Fortunately, junkyards are full of them. Re-flashing firmware can be a nightmare, so if your EBCM is dead it's easier to find a used one running the same firmware. You don't have that option with a used BCM.
thanks; that would be amazing. it's a 2011 with about 13,000 miles on it. any other info i can provide? i'm in Connecticut, not far from New York.
There WAS a world class Corvette Tech at Key Chevrolet in Middletown and I don’t know if you are near there…he has since moved on to working for GM…you can call them and ask if they may be able to diagnose a communication issue…I don’t even know if this top Corvette Tech would have been able to diagnose it…99.999 % of shops can’t !!
I was looking at some wiring and it looks like the EBCM, ESC, ECM, and TCM modules are powered from the RUN/CRANK relay which is located under the BCM and feeds those circuits…if you can remove the X3 (J3) connector pictured remove the negative battery cable and remove the bolt securing that connector…spray it with some contact cleaner and reinstall…not saying this is the fix but wouldn’t hurt…check to see if any of the terminals look bent or discolored.
Thanks so much. I *personally* shouldn't even be allowed to drive this car, much less lift the hood. In addition to calling Middletown's dealership, do you have any general suggestions on finding a non-dealership mechanic who knows Corvettes? Or is Middletown my best bet?
A good diagnostic shop can diagnose ANY car because they have a solid understanding of electrical circuits so doesn’t have to be a “Corvette Specialty Shop” since they are only specialists with brake and oil changes !!…saw these 2 in Connecticut with same name but 2 different numbers…I’d call them.
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When BCMs go bad
