The rear Brake cylinders are leaking...
I need to change them but I have a couple of questions:

What brand to buy?
Is it hard to change?
Any special tools require?

Thank you

I wish you the best of luck!!! The last 4 GM I had all had leaking rear wheel cylinders. I've tried many brands and none of them worked for more than a year...it'* an absolute crime the quality of parts.

The 97 SSEi I have now had both rear cylinders changed under warranty.

Bite the bullet and use OEM GM parts, don't bother with the AC Delcos or any other aftermarket part, that is if you're keeping the car for more than a year.

Cheers,

Changing those things are a pain. I replaced mine 1 1/2 years ago and ever since a couple months ago I always get a squeeking noise from the rear now. I know the shoes should be changed but I hope the cylinders didn't fail again too. I hate drums brakes