Try what Steve mentioned first, (make sure rears are adjusted properly), but
you really will need to find out what is going on with the ABS light. If
have 4WAL (big ugly unit sitting on the firewall right below the master
you may need a new ABS unit, and it's possible you have some air in there.
These units definitely need a scan tool to properly bleed the system if you
happened to get any air in the ABS unit.
Hopefully, your problem is simple.
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