I just changed my uca to the ones rough country has although now they say for 3in lift only on the website now and got an alignment and retorqued all the bolts on both crossmembers with a torque wrench not just hit it with an impact and havent had any problems since then and thats been about 6 months and this is on a 15 Denali on a 6in rc with 35s on stock wheels
Went back under checked every bolt with a pry bar and wrench found my driver side upper control arm bolts just loose enough to move with a pry bar and some force. Aligned it and tightened them down now I can take all the curves I want and stabilitrak hasn't kicked on once since
Sorry to bring up an old issue but was anything ever found on this my truck is a 2015 Denali 1500 5.3 with a 6 in rc lift with the stock magnaride shocks on 35s I doubt its my lift but since I've had it lifted for 4 months and have put about 14k miles on the lift and it just started doing this last week as well as when I brake it wants to go left now looked at everything below and everything looks normal
Figured it out ignore my post