it’s me with the 6L80 - & it’s F I N A L L Y suspension time! help

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denalilex

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hey hey it’s me again
finally going to obsess over something NOT 6L80 related… but oh, i’m sure i’ll be back to it.

anywho,
it’s finally time to repair - well, patch up - my sorely needed suspension system.

i’ve got a blown LR air bag & just got the new z55 OEM replacement on my doorstep… not passive, staying with stock.

i somehow managed to get my
hands on an autel maxisys for $100…& came with a fresh subscription & reset warranty. so when my luck hits - it looks like this.

anyway - i’ve got C0660-06 as the lone code for my ESC module. the weird thing is - after swapping out the 3 ESC related fuses - the service suspension system dash message went from a constant to intermittent. sometimes not displaying for a few days.

i ran tests on the RTD actuators on each wheel - & they all respond as they should.

like, please don’t tell me it’s the compressor .. but i guess, if you must, just tell me.
but is there anything else aside from replacing it that i could look into first? the intermittent message makes me believe it’s not totally shot. & maybe i have a wiring issue that needs addressing.


thx.
sorry i’m still long winded

idk how to add a signature so

2007 GMC Yukon Denali 6.2L v8
z55 stock suspension no mods
 

Fless

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To add a signature click on your username at the top right of your page, then select "Signature."
 
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denalilex

denalilex

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thank you!!!! i swear i’m not this entirely internet illiterate
well what the heck. i have one set but it’s not showing up on my posts.

i broke it idk ugh … do i have to select something on the post itself when i post a thread?

suspension shall wait! until i can figure out my signature
 

Joseph Garcia

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You should be able to test the compressor functions using your scanner tool.

I would also recommend testing your air connections on both rear shocks using the soap and water method, and also test the bladder of the non-replaced shock while you are under there to ensure that you do not have a slow air leak.
 
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denalilex

denalilex

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BADABING BADABOOM! look at me go. moving up in the world. from a TYF newbie to a member with a signature.

albeit - a member who’s still throwing a 10mm around underneath my truck in hopes of continuing to somehow unbreak it. but a member, nonetheless. with a signature.

(i can’t take the credit. it was all @Fless )
 
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denalilex

denalilex

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You should be able to test the compressor functions using your scanner tool.

I would also recommend testing your air connections on both rear shocks using the soap and water method, and also test the bladder of the non-replaced shock while you are under there to ensure that you do not have a slow air leak.
can i weigh in on some of your scan tool expertise whenever you are free / see this ? (i know i look super master tech & all but … i’m not)

i figured out how to send commands to the RTD actuators. but that’s it. i also would probably benefit from confirming that the parameters i am getting on my scan tool are the correct ones that they should be showing.

this compressor has been in my nightmares for the last 4 projects i did on my truck … knew i’d have to address the elephant in the room - or electrical parasite on my rear (heh) - eventually. here i am.

the whole intermittent service suspension DIC message has me confused. hopefully confused.
 

Joseph Garcia

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Perhaps, your scanning tool has some online documentation regarding 'pathing' to get you to the right point in troubleshooting with the scanner. I've uploaded the Tech 2 'pathing' document, so that you can see how it is used.
 

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