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-   -   BCM Not Communicating (https://www.hummerforums.com/forum/hummer-h3t-39/bcm-not-communicating-40240/)

emetdw 10-03-2018 10:20 AM

Oh wow, sorry to hear that. Did you do anything specific to get the computers communicating again or was it random?

FloridaH3t 10-03-2018 04:09 PM

Had a vehicle computer genius with top of the line scanners go through the whole system and still have stability fail My mechanic is now thinking vacuum leak, could that be it? All computers Yaw sensor seem to be communicating and working. I am at a loss
H E L P

atvspeed4 10-03-2018 04:11 PM


Originally Posted by FloridaH3t (Post 355082)
Had a vehicle computer genius with top of the line scanners go through the whole system and still have stability fail My mechanic is now thinking vacuum leak, could that be it? All computers Yaw sensor seem to be communicating and working. I am at a loss
H E L P

Just had similar issue on a 2006. Ended up being a bad dash cluster. Really had my doubts but it was a inexpensive fix thankfully.

FloridaH3t 10-03-2018 09:54 PM

How did you determine that was the problem?

atvspeed4 10-04-2018 08:21 AM


Originally Posted by FloridaH3t (Post 355087)
How did you determine that was the problem?

Went to a shop that specializes in auto electronics diagnostics nightmares

emetdw 10-04-2018 09:59 AM


Originally Posted by atvspeed4 (Post 355096)
Went to a shop that specializes in auto electronics diagnostics nightmares

Ouch, that does not sound cheap! But probably super effective, especially compared to the dealership that scratched their heads over my issue for almost 4 weeks :(

FloridaH3t 10-05-2018 01:17 PM

Could it be a vacuum leak causing the service traction control ? All computers and sensors communicating and working properly

FloridaH3t 10-20-2018 07:20 AM

Well well well after all the questions and help and frustration what did we find?????? A cat that had totally disintegrated causing a major clog of the exhaust system. I am waiting on part and will post pictures shortly. I have never seen anything like this in my life.:eek:

emetdw 10-20-2018 11:36 AM

Wow, I did not expect that, but that is a huge relief to find the issue. How did you figure it out?

FloridaH3t 10-20-2018 02:30 PM

Truck would barely run low power pulled the censor on cat it was better put it back on it would choke out. Pulled it and that was that


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