*shrugs* My 99 Intrigue'* EBTCM (Electronic Brake and Traction Control Module) fried, and I am pleased to note my mother has been driving this car for 6 years (110,000 miles) and have had no problems whatsoever. The beauty of this is my mother has no experience with ABS and Trac Control, and so the car essentially handles like an older car where the brakes *could* lock, and the wheels *could* (and will, with 3/4 throttle) spin. She borrowed it once when the car was mine, and she hit a manhole cover while slowing and the ABS triggered (waaaay too sensitive...) and it freaked her out when the pedal kicked back. So... I feel better knowing she can drive it like a "normal" car.
No computer telling you how to drive... I prefer it that way.
But I'm old school like that. You could fix it if you want to, but if you can turn a blind eye to "Trac Off/Anti Lock/Service Vehicle Soon" lights, you will be ok.
It may be an intermittent connection problem to the EBTCM on your car (I assume, being a GM product, most models are built with the same basic guts) or your EBTCM could be flaky. Not sure where it'* located in your car, but Intrigue and Alero (and presumably Century/Grand Prix and Grand Am/Cavalier, respectively) hide these modules in the driver footwell (left side by E-brake) behind carpeting. The modules are exposed to dampness from your shoes, and are known to fail as a result, and also to have corroded/oxidized contacts in the plugs.
This also happened to a friend'* 99 Alero 2.4 EBTCM, and he still drives it with no problems (aside from what his abuse has done to drivetrain...).