Will these work on a 1989 Chevy Suburban for the front?
Yes. As long as the Suburban does not have the hd calipers they will work. Look at the line that is currently on the vehicle and see if the block that bolts the line to the back of the caliper is square of has the half round top on it. If it has the half round top it is the heavy duty caliper and this line will not work.