1st time i drive it the lights don't come on. if i make another trip sometimes they come on and some times they won't.they will be off for a few days and then back to being on after a trip or 2. Mechanic checked it and said I had a bad speed sensor on front driver hub. and that CAN (computer) was coding he said $1.5 -1.8K to replace can and a couple hundred for sensor. said it may not fix it. after he cleared it, it stayed off for 5-6 days.
both of my "check brakes" lights will come on. intermittently on 2001 Chevrolet Blazer