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Old 06-09-2013, 09:54 PM   #251
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Originally Posted by One-Bad-ZL1 View Post
I'm calling my dealer tomorrow. Anyone got a good pic of where this thing in located in the console?
Here's the pic from the DIY article I wrote on the install. You can view the whole article from the link in my sig:

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Old 06-09-2013, 11:18 PM   #252
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Not the same part #. Do you think it is the same as part # 13578326?
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Old 06-09-2013, 11:31 PM   #253
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I really wouldn't go to ebay for something like this...a factory part can be found for less than $80
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Old 06-09-2013, 11:54 PM   #254
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Not the same part #. Do you think it is the same as part # 13578326?
Was curious about that as well. It lists alternate part numbers for it in the ad and when I checked one of the other numbers it pointed back to the 13578326 part.
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Old 06-09-2013, 11:56 PM   #255
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I really wouldn't go to ebay for something like this...a factory part can be found for less than $80
They say it's an OEM part. If it's the same part but half the price, why not? Because it's labeled as "used"?
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Old 06-10-2013, 12:11 AM   #256
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They say it's an OEM part. If it's the same part but half the price, why not? Because it's labeled as "used"?
For a less than $100 part I would buy new. With electronics there is always a possibility of it being DOA. But that's just me.
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Old 06-10-2013, 04:43 PM   #257
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Maybe one of the Mods can add "(SOLVED)" to the thread title. Also, why hasn't this hit the Homepage yet?
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Old 06-10-2013, 09:54 PM   #258
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I'm willing to bet the non-HSA sensors only have one goo-cylinder for yaw, and are missing the second one for hill-sensing.

If my electronics experience serves me right, I think those are capacitors that you cracked open. The small chips to the right of the capacitors are likely the sensors. Note that they are positioned 90 degrees from each other. I am by no means an electronics expert, but I did stay at a holiday inn express last night!
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Old 06-10-2013, 10:25 PM   #259
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This may be a dumb question, but can you get another plug with leads and put both yaw sensors (or whatever they're called) and set up a switch between the two, so that the Hill Start Assist could be activated/deactivated by switching between the two sensors?
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Old 06-10-2013, 10:26 PM   #260
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Any ideas as to what kind of impact this part will have on the stabilitrak system or if the only real difference is for the HSA?
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Old 06-11-2013, 06:56 AM   #261
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Quote:
Originally Posted by MPHS_AGM View Post
The small chips to the right of the capacitors are likely the sensors. Note that they are positioned 90 degrees from each other.


If you search for "acceleration sensors", you'll find 2-D and 3-D versions. It does not appear that you need two separate sensor chips for 3-D sensing.
The link below ↓↓↓ is for purposes of illustration only.

http://www.sunrom.com/sensors/accele...-sensor-3-axis

In the above case, the 90° chip orientation is most likely for printed circuit conductor routing reasons. I have no idea what the one that the +5V goes to does.


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Old 06-11-2013, 02:00 PM   #262
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Interesting. From newgmparts.com



Ah HA! Knew it was an accelerometer.
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Old 06-11-2013, 08:20 PM   #263
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Called the dealership, they want $110 plus tax so if you find it new for less, grab it. I think I'll loose the launch stats in the DIC under the performance menu, but since I don't use it and I'm more bothered by the HSA, I'll be making the swap.
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Old 06-11-2013, 10:04 PM   #264
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First off, thanks to EVERYONE that pitched in to solve this effing fiasco, especially to SSRS1LE.

Next time I'm in Pitt I'm buying you a pitcher of Yuengling.

Best I could tell, gmpartsdirect.com had the lowest price, $80.15 shipped. There are used units on ebay, but for peace of mind I went with new. I may not it installed for a while yet (still awaiting new steering rack from GM, but that's a whole different fiasco), but when I get done I'll post up.

Thanks again!
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Old 06-13-2013, 02:52 AM   #265
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This seems like a definite fix...though i never had much of a problem with hsa but lol....

Wait for it...wait for it..........

"Will this void mod my warranty?????"
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Old 06-13-2013, 05:59 AM   #266
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Personally, I doubt it would ever get noticed during any warranty issues, unless they have to test said issue on a hill for some reason
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Old 06-13-2013, 06:52 AM   #267
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Personally, I doubt it would ever get noticed during any warranty issues, unless they have to test said issue on a hill for some reason
That's what I was thinking. However, I wonder if a diagnostic code scan would show something even if it doesn't throw a light.
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Old 06-13-2013, 09:24 AM   #268
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Exactly what sort of consequential wear or damage could possibly occur for which warranty coverage could be denied?


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Old 06-13-2013, 01:01 PM   #269
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Exactly what sort of consequential wear or damage could possibly occur for which warranty coverage could be denied?


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I was being sarcastic...
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Old 06-13-2013, 03:25 PM   #270
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Quote:
Originally Posted by MPHS_AGM View Post
If my electronics experience serves me right, I think those are capacitors that you cracked open. The small chips to the right of the capacitors are likely the sensors. Note that they are positioned 90 degrees from each other. I am by no means an electronics expert, but I did stay at a holiday inn express last night!
The cans look like caps, but unless they have changed design in recent years caps contain a foil wrapped up like a fire cracker. Over load them and they explode like one too. All I see there is goo, so unless they removed the foil and insulator I suspect they are something else.
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Old 06-13-2013, 10:25 PM   #271
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The cans look like caps, but unless they have changed design in recent years caps contain a foil wrapped up like a fire cracker. Over load them and they explode like one too. All I see there is goo, so unless they removed the foil and insulator I suspect they are something else.
Last time my home HVAC capacitor blew up, it was full of goo and I didn't notice much metal in there. But then again they may be something else.
The accelerometer may be in the IC chip on the right of the picture.
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Old 06-17-2013, 09:01 AM   #272
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I replaced the sensor this weekend with the one from an automatic and am happy to say theat "HSA" is dead.

I opened up the old sensor and have some information for those who are interested.

1. the round cans in the upper left corner are actually 47uf electrolitic capacitors
2. The accelerometor is the large rectangular ic on the right halfway up. it is made by Murata Semiconductor. The model number is not specifically listed on their website which probabbly means that this one is a custom device for GM and not for sale to the general public.
3. The large square IC on the left is a Micro-controller from TI that handles all the serical communication from the module and the main controller.
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Old 06-30-2013, 02:29 PM   #273
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So it's been three weeks since the current HSA Disable method was discovered. Are there any updates as to how it's working?

Bearing in-mind that this is a sensor replacement and not a Control Module replacement, internally, GM is strongly discouraging the swapping of control modules because of complications that may arise due to the implementation of GM's Global A Electrical Architecture security features.

There is more information available than I can provide, however here is a GM TechLink Article on the subject.

Global A Electrical Architecture Security Overview

Does anyone know of any implications a sensor swap may or may not have?
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Old 06-30-2013, 03:17 PM   #274
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I've been watching this thread for those very reasons. If it shakes out that there is no problem I'm doing this mod.
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Old 06-30-2013, 03:50 PM   #275
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From what I've read in this thread;

http://www.camaro5.com/forums/showthread.php?t=300649

so far so good. I have the part, but haven't the had the time to do it yet between that silly little thing called life and and it being in the shop getting the steering rack replaced. Going back in first thing tomorrow morning, something in the coolant system let go and sprayed the front of the engine compartment.
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