ABS light comes on, goes off.
I have a 1989 Buick Reatta. I have always had a problem with the ABS light coming on sometimes. If I turn the innition key to off and then imediately back on while driving it goes off. I've also noticed that when I fill up the gas tank it is less likely to come on but the lower ther gas tank gets the more it comes on. I've gone through my repair manuel it it talks about a possible bad ground or the wheel sensors. I've checked the grounds, cleaned them and reattatched. Still no change. The part that has me scratching my head is why it goes off less with a fuller gas tank.
Any ideas of what it more likely would be.
Thans for any help