Pontiac Problems? Ask a Mechanic for Answers ASAP
Are all the brakes locking up at the same time, or different ones at different times?
Does it have ABS braking
Ok, have you replaced the flexible brake hoses as well each time it has happened?
When they lock up, what did you do to get the unlocked to be able to drive it home, or did you have it towed when they locked up?
Ok, when the calipers are replaced, are BOTH the pins and the caliper brackets replaced as well