2008 Trailblazer LT, 151,000 miles, new brakes, rotors, wheel bearings, PS rack+ pinion (twice), PS lines, tires (and probably more) in the last year.

indicator lights for ABS and Traction control(??) light up and stay on when I start up, but if I shut off and restart, they stay off. Not happening all the time, but occasionally... Everything seems to be working when they are on so it may just be a glitch or something, ABS works when I slam on the brakes on ice, and traction control seems to be OK, just those annoying lights. Any Ideas?

thanks

 

run a full diagnostic scan with a professional tool

 

Most likely you have a wheel bearing sensor going bad. Usually garages will just replace the whole wheel bearing .