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Old 05-24-2013, 07:46 PM   #141
cornerspeed92


 
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Those of you who are defending this piece of *hit,take a look at post #73 and tell me how this is a good thing????????...........and remember, WE know how to drive a manual!

Last edited by cornerspeed92; 05-24-2013 at 08:03 PM.
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Old 05-24-2013, 09:46 PM   #142
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There has to be a harness that a resistor can get thrown into like the skip shift eliminators do...


I live in FL where it is relatively flat, I mainly run into HSA going up my driveway into my garage. It makes me look like a schmuck every time though.

The other day I almost wrecked trying to pull out of the BestBuy parking lot. It activated and I was so busy trying to overcome it I lost track of on coming traffic. There was a car coming and well when the HSA released I launched in front of a car fortunately for me and my son not to mention my Camaro SS 1LE the driver was alert enough to swerve out of the way.
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Old 05-25-2013, 01:22 PM   #143
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Yep, this is an amazing device sigh.........!
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Old 05-25-2013, 04:50 PM   #144
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Quote:
Originally Posted by Firefighter View Post
There has to be a harness that a resistor can get thrown into like the skip shift eliminators do...


I live in FL where it is relatively flat, I mainly run into HSA going up my driveway into my garage. It makes me look like a schmuck every time though.

The other day I almost wrecked trying to pull out of the BestBuy parking lot. It activated and I was so busy trying to overcome it I lost track of on coming traffic. There was a car coming and well when the HSA released I launched in front of a car fortunately for me and my son not to mention my Camaro SS 1LE the driver was alert enough to swerve out of the way.
This is exactly the type of experience that should be reported to the NHTSA.
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Old 05-25-2013, 08:10 PM   #145
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There has to be a harness that a resistor can get thrown into like the skip shift eliminators do...
The accelerometer (yaw sensor) that controls this function appears to output a single data stream that contains the information. I was looking for a pitch output that could be isolated, but a serialized signal would require some other type of modification. Like reading the data stream, removing the pitch signal, and passing the modified signal the the brake controller. By the way the yaw sensor is part of the traction control systems, so it may cause serious issues if messed with. I would prefer the option to disable HSA easily.
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Old 05-25-2013, 08:53 PM   #146
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The accelerometer (yaw sensor) that controls this function appears to output a single data stream that contains the information. I was looking for a pitch output that could be isolated, but a serialized signal would require some other type of modification. Like reading the data stream, removing the pitch signal, and passing the modified signal the the brake controller. By the way the yaw sensor is part of the traction control systems, so it may cause serious issues if messed with. I would prefer the option to disable HSA easily.

Well all that sounded complicated...

I'm sure someone way smarter than me will figure something out. Maybe you are the guy.
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Old 05-25-2013, 09:31 PM   #147
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Well all that sounded complicated...

I'm sure someone way smarter than me will figure something out. Maybe you are the guy.
LOL

Well, I owe everyone an apology. I got my car on Thursday and HSA is already starting to kick my ass. I stalled twice on a big hill a few blocks away from the dealership, and once going up my driveway. This shit definitely sucks.
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Old 05-26-2013, 04:49 AM   #148
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Been playing with this the last few days. I found that the experienced driver method of dealing with hills doesn't work. Try to bare with me as this is hard to explain.

I tried leaving on a hill with the usual blip of the throttle and a somewhat aggressive lift of the clutch like I have done for years when driving a manual. Almost stalled the engine.

Then I tried leaving as though I was on flat ground. A slight touch on the throttle and a slow gradual lift of the clutch. Pulled away like butter.

It seems as though us experienced manual drivers are just too fast for the system. I know it sounds crazy, but try pulling gently away as soon as the light changes. No anticipation of the HSA release point. No attempt to avoid rolling back. Just a normal flat ground in traffic low rpm launch. Let the torque get the car rolling and I think you will notice it as being less intrusive.
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Old 05-26-2013, 09:28 AM   #149
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Rather than defeating the electronics in this system, I wonder if we could stop the system from mechanically trapping the brake fluid pressure. If the electronic signal to trap pressure does not make it to the mechnical pressure trapping device, then the car will operate as if it has no HSA system. Maybe.
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Old 05-26-2013, 10:00 AM   #150
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Also, "newb", good point and description, this how I see this system operating also. Great if the driver is just normally pulling away, but I can see how this system can cause the engine to stumble or stall if the driver is trying to QUICKLY move off to, say, fit into a smaller than normal gap in heavy traffic.

A competent driver moving off quickly can easily beat the two second delay. Then we can have two opposing forces as the driver wants to move the car forward immediately, but the HSA system wants to hold the car in place for an additional second. The driver has to either wait for a larger gap in traffic to start off normally, or get off the brake a second or so before actually wanting to start forward quickly. I would rather just have control of the situation myself, hence the choice of manual transmission in the first place.

Come on Chevy, a way to disable HSA makes sense here and should have been available all along.
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Old 05-26-2013, 03:22 PM   #151
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Quote:
Originally Posted by newb View Post
Been playing with this the last few days. I found that the experienced driver method of dealing with hills doesn't work. Try to bare with me as this is hard to explain.

I tried leaving on a hill with the usual blip of the throttle and a somewhat aggressive lift of the clutch like I have done for years when driving a manual. Almost stalled the engine.

Then I tried leaving as though I was on flat ground. A slight touch on the throttle and a slow gradual lift of the clutch. Pulled away like butter.

It seems as though us experienced manual drivers are just too fast for the system. I know it sounds crazy, but try pulling gently away as soon as the light changes. No anticipation of the HSA release point. No attempt to avoid rolling back. Just a normal flat ground in traffic low rpm launch. Let the torque get the car rolling and I think you will notice it as being less intrusive.
I've started to notice this as well...if I'm anticipating the HSA I'm more likely to stall or jerk the car forward. If I treat it like a normal start, I rarely ever have issues. I would like to see an option to turn it on/off though
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Old 05-28-2013, 09:53 AM   #152
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So i have been working with the service department at the dealership where i bought my car. The HSA was new for 2013 and initially they had almost no information on how the system is supposed work. Since then, they have been in repeated contact with GM and they have been testing new cars on the lot as they rotate through. I get the impression that GM is less than helpful and at this time there is no way to totally disable the system. One thing they found with the testing was that there was there was quite a bit of variance from car to car in terms of what incline was required to activate the HSA. The only thing they can do is recalibrate the 0 incline. Based on this ,i suggested that we raise the front of the car a couple of degrees when we do the calibration. If this works, then at least the HSA won't come on uless you are on a really steep hill. I am going down the the dealership this Saturday to test this and will report back
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Old 05-28-2013, 11:57 AM   #153
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Damn thing got me again over the weekend. stopped on a slight hill where I needed to drive straight across the road. You have to be quick here because it is close to an overpass (hill blocks view of traffic coming from the right). I give a bit of throttle and ease off the clutch...not moving...not moving...more throttle...more...SQUEAL (burnout as soon as HSA kicks off)...

Look like a dumbass in his 1st standard tans car...
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Old 05-28-2013, 01:15 PM   #154
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The only thing they can do is recalibrate the 0 incline. Based on this ,i suggested that we raise the front of the car a couple of degrees when we do the calibration. If this works, then at least the HSA won't come on uless you are on a really steep hill. I am going down the the dealership this Saturday to test this and will report back
So when you lower the car back down after recalibrating it will think its pointing downhill even though it is on level ground. Correct? Given that the HSA activates in reverse when you back up a hill won't your recalibration result in activation in reverse on level ground?
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