Installed McGaughy's 2/3 and have issues

[NORCAL SS]

Yeah ive never come across this at all before or after a drop guess I just got lucky. In his case started after the drop so hopefully dealership will work with him to do the tsb

 

[Modded]

Well its easy for the issue to go unnoticed because though the ABS turns on when turning sharply slowly the actual dash ABS light does not turn on. You will only know its the ABS because of how the pedel wobbles/feels. Goes away qucik too. The Stabilitrack mainly only turn on when making right turns and it does not make the SUV handle/feel different, the light just turns on.
Doesn't bug me much at al, but if you are under warranty you might as well get it fixed.

 

[Modded]

I don't think coilovers will effect anything. When I dropped my truck on springs all around I did not have the issue. It started with the 24s and has been the same ever since, even when I dropped the front 3" it remained like that.

 

[GalaxyBlackEsky]

I don't think coilovers will effect anything. When I dropped my truck on springs all around I did not have the issue. It started with the 24s and has been the same ever since, even when I dropped the front 3" it remained like that.

I just installed my spindles as well and have the same issue. I had ground force springs in the front before and never had the issue. Also kinda pissed that my alignment doesn't look right either even after a alignment was done looks like I have to much positive camber. Also it raised the front up about a inch more then I had on my ground force. But the positive it rides so much better.

 

[Modded]

I just installed my spindles as well and have the same issue. I had ground force springs in the front before and never had the issue. Also kinda pissed that my alignment doesn't look right either even after a alignment was done looks like I have to much positive camber. Also it raised the front up about a inch more then I had on my ground force. But the positive it rides so much better.

If you have got an alignment since the spindle install I bet your alignment is perfectly fine, you're probably just too used to the negative camber the GF springs gave you from spring sag. I bet those GF springs gave you atleast a 2.75" drop due to sag.
I'm inclined to say maybe a spindle and aftermakret wheel/tire install can cause this issue. I know its not caused by the McG spindle because people on GMFS with NNBS Sierra's/Silvys don't have that issue, and it's the exact same spindle.

 

[AMG ETR]

I just installed my spindles as well and have the same issue. I had ground force springs in the front before and never had the issue. Also kinda pissed that my alignment doesn't look right either even after a alignment was done looks like I have to much positive camber. Also it raised the front up about a inch more then I had on my ground force. But the positive it rides so much better.

I am the exact same setup as you, McG spindle and 24" slides with the same issue... Mine started after the spindle install as well... Maybe it is the GM bulletin but why is it happening after the spindle install?
Evan

 

[Modded]

I just found this TSB (pic below)!! I called my local dealership and i'm taking mine in in the morning to get fixed.

 

[GalaxyBlackEsky]

I just found this TSB (pic below)!! I called my local dealership and i'm taking mine in in the morning to get fixed.

Let me know what happends. I will take mine in as well if it works.

 

[AMG ETR]

Let me know what happends. I will take mine in as well if it works.

Ditto, kinda weird they would have a TSB specifically for lifted/lowered vehicles (IE: Aftermarket)

 

[THE YETI]

Ditto, kinda weird they would have a TSB specifically for lifted/lowered vehicles (IE: Aftermarket)

my sentiments exactly... very curious to see how that goes.