I have a 1996 cutlass supreme 100,000 miles ..when i press the brake hard enough the low trac light will come one and I will here what i believe is the abs unit...This also happens if i hit a big enough bump...it started in the summer time when the road was dry and I didn't slide...and now it happens almost every time when the roads are slick because now its winter here.
Maybe struts? abs unit? wiring?