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Stevoone · 11-10-2012, 11:52 PM

The issue was with the rubber insulator over the line/hose. Water collects inside of that rubber boot and it starts to rust away. I must have done at least 100 of them. A good amount of them came in blown off already.

The replacement GM hoses do not have that rubber piece on them. When you replace them be sure to clean off the caliper where the brass washer seats. They tend to build up a little bit of corrosion. I usually hit them with a a scotch brite pad before putting the new hose on.

Also, be mindful of the rear brake line over the diff. I haven't seen one blow out yet but every single CTS I've pulled the diff on that line is pretty rusty.

11-10-2012, 11:52 PM	#8
Stevoone Join Date: Mar 2007 Location: NJ Posts: 540 iTrader: (2)	The issue was with the rubber insulator over the line/hose. Water collects inside of that rubber boot and it starts to rust away. I must have done at least 100 of them. A good amount of them came in blown off already. The replacement GM hoses do not have that rubber piece on them. When you replace them be sure to clean off the caliper where the brass washer seats. They tend to build up a little bit of corrosion. I usually hit them with a a scotch brite pad before putting the new hose on. Also, be mindful of the rear brake line over the diff. I haven't seen one blow out yet but every single CTS I've pulled the diff on that line is pretty rusty. Last edited by Stevoone; 11-10-2012 at 11:55 PM.