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Old 04-16-2013, 01:09 AM   #1
hoohah797
 
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Hill Assist Sensor

Does anyone know where the sensor for the hill assist is located on a 2013 LS3?
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Old 04-16-2013, 05:22 AM   #2
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It's all part of the StabiliTrac system and ABS
There's not just a sensor.
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Old 04-16-2013, 05:26 AM   #3
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Here are the threads in which I've been involved about HSA:

http://www.camaro5.com/forums/showthread.php?t=256232


http://www.camaro5.com/forums/showth...=277285&page=2

http://www.camaro5.com/forums/showth...=277285&page=2

http://www.camaro5.com/forums/showthread.php?t=240676

http://www.camaro5.com/forums/showthread.php?t=218714
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Old 04-16-2013, 06:50 AM   #4
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There is in fact a "pitch sensor" that GM describes in the HSA system used in the Sonic. I'd imagine the same setup is used in the Camaro:

"In a Sonic equipped with hill-hold, a pitch sensor detects the tilt of the body when the car is stopped on a slope and sends a signal to the stability control system."

https://media.gm.com/content/media/c...cHillHold.html

I tried researching where this sensor actually is, but haven't found any answers yet either.
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Old 04-16-2013, 08:41 AM   #5
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Quote:
Originally Posted by SSRS1LE View Post
There is in fact a "pitch sensor" that GM describes in the HSA system used in the Sonic. I'd imagine the same setup is used in the Camaro:

"In a Sonic equipped with hill-hold, a pitch sensor detects the tilt of the body when the car is stopped on a slope and sends a signal to the stability control system."

https://media.gm.com/content/media/c...cHillHold.html

I tried researching where this sensor actually is, but haven't found any answers yet either.

A tech told me the pitch detected through the gyro sensor that decided when StabiliTrac needed to intervene
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Old 04-16-2013, 09:39 AM   #6
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A tech told me the pitch detected through the gyro sensor that decided when StabiliTrac needed to intervene
StabiliTrac uses separate yaw and pitch sensors, which are a lot more simple than a gyro sensor. The yaw sensor is part number 13575612.

http://www.saeparts.com/ProductInfo.aspx?id=7931838

The pitch sensor is a separate part that was added to 2012 Sonic and 2013 Camaro. Haven't been able to find the part number or location yet though. If anyone knows where the yaw sensor is located, odds are it would be mounted in that same area.
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Old 04-30-2013, 01:47 PM   #7
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I realize this is a couple of weeks old, but I figured I would interject here...
According to the factory service manuals, the yaw sensor (located under the center console) is a multi-axis sensor that provides data to the traction control system and the ABS. This is not verbatim, but a summary. This information is listed under the ABS with F55 option (Magnetic Ride Control i.e. ZL1) and also states that the HSA is disabled when the stability control is turned off. So far no one has been able to confirm this action.
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Old 04-30-2013, 01:59 PM   #8
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Quote:
Originally Posted by MPHS_AGM View Post
I realize this is a couple of weeks old, but I figured I would interject here...
According to the factory service manuals, the yaw sensor (located under the center console) is a multi-axis sensor that provides data to the traction control system and the ABS. This is not verbatim, but a summary. This information is listed under the ABS with F55 option (Magnetic Ride Control i.e. ZL1) and also states that the HSA is disabled when the stability control is turned off. So far no one has been able to confirm this action.
Crappy weather around me to day so I didn't drive my Camaro. Our house is on top of a hill so I can easily see if this works or not when I get home today and I'll report back what I find.

No luck with any combination (TC off, Stabilitrak off, holding button down for 8 seconds and turning everything off, holding the clutch in while trying these combinations as well as putting in neutral and foot off of the clutch while trying them again). I thought I had success at first with T/C off, but it just turned out to be my hill assist timing out after 2 seconds.

Sigh...oh well. It was worth trying.

Last edited by dwinva; 04-30-2013 at 04:22 PM.
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Old 04-30-2013, 05:25 PM   #9
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Thanks guys for digging and digging. The closer you get the happier some manual drivers are going to be. I would love for this to be defeatable or at the least driver selectable.
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Old 05-01-2013, 05:56 PM   #10
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Quote:
Originally Posted by MPHS_AGM View Post
I realize this is a couple of weeks old, but I figured I would interject here...
According to the factory service manuals, the yaw sensor (located under the center console) is a multi-axis sensor that provides data to the traction control system and the ABS. This is not verbatim, but a summary. This information is listed under the ABS with F55 option (Magnetic Ride Control i.e. ZL1) and also states that the HSA is disabled when the stability control is turned off. So far no one has been able to confirm this action.
Still comes on when stability control is off. It may be less sensitive
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