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Old 05-02-2013, 10:13 AM   #26
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Originally Posted by davidcroft View Post
I'm gonna ask my tech at work to download a 2012 EBCM program into my 2013!
If you have dual mode exhaust downloading a 2012 EBCM may affect how the dual mode exhaust works since I beleive that is also controlled by the EBCM.
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Old 05-02-2013, 12:09 PM   #27
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If you disable the whole thing... meaning hold the button down (once) for more than 8 seconds, it shuts off the HSA. If you simply put it into competition mode (two button presses), it does not shut it off. I am now shutting it all off every time I start my car.
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Old 05-02-2013, 07:12 PM   #28
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If you disable the whole thing... meaning hold the button down (once) for more than 8 seconds, it shuts off the HSA. If you simply put it into competition mode (two button presses), it does not shut it off. I am now shutting it all off every time I start my car.
NOPE!!! Just tried it! Still doesn't disable Stupid Hill Annoyance!!



Next!.........
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Old 05-02-2013, 07:18 PM   #29
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NOPE!!! Just tried it! Still doesn't disable Stupid Hill Annoyance!!



Next!.........
Agreed. I've tried this a bunch of times, and again just now. Doesn't turn the HSA off in my car.
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Old 05-02-2013, 09:48 PM   #30
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well I have simply disabled TC with one push and Stabilitrack, with the double click. I have never held the button for an "eight count" when shutting off the TC. I will try that.
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Old 05-02-2013, 10:33 PM   #31
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well I have simply disabled TC with one push and Stabilitrack, with the double click. I have never held the button for an "eight count" when shutting off the TC. I will try that.
It doesn't work ! I tried today and it didn't disable it. Of course you should try and see if your's reacts differently.

I reviewed some schematics today and found that the output from the yaw sensor is a single serial data stream. I was hoping for separate outputs for each axis so that the pitch could be isolated. Using the sensor output will require a method to analyze the serial data and modify it to remove the pitch signal. That is way above my pay grade! Anybody else have other (easier) ideas?

The communication schematic and connector information are attached.
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Old 05-02-2013, 10:34 PM   #32
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Old 05-03-2013, 06:45 AM   #33
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Can you post a diagram with the exact location of the Multi-Axis Acceleration Sensor? I heard it's somewhere under the center console, but having a specific location would be handy before tearing things apart randomly.

I would still like to test unplugging it. Should get a Stabilitrak error on the display, but as long as there no chime, I might be able to live with that. Rather have no Stabilitrak and a warning light, than HSA.
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Old 05-03-2013, 07:57 AM   #34
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Originally Posted by MPHS_AGM View Post
It doesn't work ! I tried today and it didn't disable it. Of course you should try and see if your's reacts differently.

I reviewed some schematics today and found that the output from the yaw sensor is a single serial data stream. I was hoping for separate outputs for each axis so that the pitch could be isolated. Using the sensor output will require a method to analyze the serial data and modify it to remove the pitch signal. That is way above my pay grade! Anybody else have other (easier) ideas?

The communication schematic and connector information are attached.

did not work for me either
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Old 05-03-2013, 08:27 AM   #35
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All we should have to do is change the angle on the sensor to be tilted down a few degees. That way the system will think we are not on a upward hill and not activate
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Old 05-03-2013, 08:49 AM   #36
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All we should have to do is change the angle on the sensor to be tilted down a few degees. That way the system will think we are not on a upward hill and not activate
But is that sensor involved with the stabilitrac or traction control? I do not even have my car yet, let alone the cool manuals some of you have, but to me, those two systems seem important in saving tires for when it matters. I do not think you want them malfunctioning, but again I do not have my car yet, so I may be way off base. Killing the hill assist may be worth any other penalty!
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Old 05-03-2013, 08:49 AM   #37
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All we should have to do is change the angle on the sensor to be tilted down a few degees. That way the system will think we are not on a upward hill and not activate
Not a smart idea...other modules use the yaw sensor not just HSA. It will have to be a programming modification and not a physical modification. I will ask my friend who readily has access to a tech2. When I was a Mercedes tech, I could go into any module and manually adjust the different options and coding on a car, weather it had that specific option or code. I can see if the tech2 will give the same capability. The above diagram only shows signal path, which means only the bcm can turn off HSA
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Old 05-03-2013, 09:01 AM   #38
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Originally Posted by bandit4008 View Post
All we should have to do is change the angle on the sensor to be tilted down a few degees. That way the system will think we are not on a upward hill and not activate
If you do that then HSA will activate every time you back up.
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Old 05-03-2013, 09:27 AM   #39
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My tuner is going to look into this with GM Tech2 when im in the shop next to pick up my Skip Shift Eliminator, if it works we will share what needs to be changed to stop HSA with everyone but chances are you will need a Tech2 or someone with access to one.
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Old 05-03-2013, 09:35 AM   #40
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If you do that then HSA will activate every time you back up.
I don't think it works that way. I have been stopped at a light before pointing downhill and HSA did not activate
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Old 05-03-2013, 09:43 AM   #41
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All we should have to do is change the angle on the sensor to be tilted down a few degees. That way the system will think we are not on a upward hill and not activate
It will also engage when facing down hill so now you would increase the activity of this feature when facing down hill. I know that it activated facing down hill because it did it to me in my driveway.
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Old 05-03-2013, 10:22 AM   #42
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I don't think it works that way. I have been stopped at a light before pointing downhill and HSA did not activate
He meant backing up an incline in Reverse. HSA does activate in that situation. Changing the angle of the sensor would make your HSA activate while in Reverse, even on a flat surface.
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Old 05-03-2013, 10:32 AM   #43
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He meant backing up an incline in Reverse. HSA does activate in that situation. Changing the angle of the sensor would make your HSA activate while in Reverse, even on a flat surface.
Exactly.
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Old 05-03-2013, 07:20 PM   #44
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I know this has been beat to death so excuse the rant. If GM wanted to put that feature is place which is arguably a good feature, they should have given the option of disabling it for without having to effect any other system. If a GM employee or moderator is following this thread, please pass this email on. - Thanks!
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Old 05-03-2013, 07:43 PM   #45
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I agree 100% that HSA is troubling,I mean come on GM,Chevrolet,people have been driving on hills for decades and stopping at the top of them as well,I think that people who chose a Camaro with a manual trans.knew what they were doing,heck I drove a Pinto as a teen and could hold on a hill with no problem,HSA caused me to stall on a slight incline that otherwise would not have been an issue for me in any other manual trans.car with no assist.I understand this was probably some stupid govt safety mandate,all the reason more the govt.should stick with what it knows which is nothing!
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Old 05-03-2013, 08:09 PM   #46
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I agree 100% that HSA is troubling,I mean come on GM,Chevrolet,people have been driving on hills for decades and stopping at the top of them as well,I think that people who chose a Camaro with a manual trans.knew what they were doing,heck I drove a Pinto as a teen and could hold on a hill with no problem,HSA caused me to stall on a slight incline that otherwise would not have been an issue for me in any other manual trans.car with no assist.I understand this was probably some stupid govt safety mandate,all the reason more the govt.should stick with what it knows which is nothing!
Couldn't agree more!!!
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Old 05-03-2013, 08:47 PM   #47
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GM had better figure out that this is a BIG deal that will cost them future sales. Dodge, I think (or Ford, cant remember for sure) has this feature but the driver can turn it off. Make it user selectable or get rid of it. With future Camaro sales already in trouble (maybe) due to styling changes, they don't need this unnecessary "feature" to further alienate buyers. GM ignore your core customers at your peril.
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Old 05-03-2013, 08:52 PM   #48
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govt.should stick with what it knows which is nothing!
Disagree. They have mastered taxes, spending, patronage, etc. This is aimed at all party affiliations!
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Old 05-03-2013, 09:45 PM   #49
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This is borderline dangerous.

I was on many hills today, if you wait for it to turn off you risk rolling back into another car, and if you power through it enough to make sure you don't stall, it beats the piss out of the car to do it. Maybe it's time to see if brandon can check into getting something going.
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Old 05-04-2013, 01:25 AM   #50
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I think it works great. It holds the brakes on just like you would do in an older car with the hand brake and releases after 2 secs. Helps reduce clutch wear. I do think it comes on too easy and is only needed for steeper slopes. I guess it could release a little faster and would be better.
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