IF YOU HAVE A 82-86 era Camaro or Firebird TA with rear disc brakes . and a CROOK HANDBRAKE .. READ and act simply on this.
GM has long now discontiued this vital kit and pistons themselves updated are not available.. to fix this isssue you could call up 0242571230 & ask it kit # AAA81 is available..
no guarentee .. or try for some rebuilt calipers that are available but seems for all those above reasons .. we don't trust or warrant the LONG Term .. after the rear pads wear down a fair bit that
the Slack handbrake issue is not reappearing.
This is a GM Tech kit.. it came out in the early 90's as I recall.. back then not a recall required but probably should have been.. it's in answer to the "USELESS BLOODY HANDBRAKE SYNDROME... " or "Emergency Brake" on the DISC BRAKE REAR ENDED 1982-86 Firebird, Camaro & Trans Ams.
The kit is a rear disc rebuild kit and takes in all the required parts to overhaul BOTH rear callipers.. its actually about 1/3rd the price of the parts individually.
Briefly the kit will give you two new calliper seal kits, springs, washers, retainer & two brand new pistons.. (which are the cause of the problem to start with.)
Don't go down the road of some magical handbrake cable adjustment or new rotors etc etc.. trust whoever.. but you now know more then most about this subject. Simply if your handbrake will not skid you..or if it can pull the lever up around 75 degrees or more.. this is the problem effect..
Order a set of new pads if you need them.. or just so you have it all done at the same time.