You may have this problem,
TSB 97-5-2, which was later updated to 98-5A-17. If you do,
here is a little FAQ on the Parking Brake, or try
this detailed text on the Retrofit.
It doesn't take too long to do, and you don't need and special knowledge or tools to complete this. I did it on my own and haven't had a problem since.
The Retrofit Kit Part Number is F6RZ-2A635-AA
