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12:th-Aug-2018, 21:26:20
how far is the piston moving out?
the disc that is rusty - is it rusty both sides?
during use the pistons don't have to move more than a couple of mm
if one side is moving out a long way (maybe 10mm or more) there won't be enough fluid in the system to make the other ones move.
you say the passenger side piston moves, and the passenger disc is rusty - the side thats not working correctly should be the rusty one
usually it's the outside that gets rusty when the cars been standing (overnight etc) if it doesn't clean off it's usually down to the caliper sliders sticking (unless you've got 4 pot calipers - I've not looked at a GTC brakes)
the disc that is rusty - is it rusty both sides?
during use the pistons don't have to move more than a couple of mm
if one side is moving out a long way (maybe 10mm or more) there won't be enough fluid in the system to make the other ones move.
you say the passenger side piston moves, and the passenger disc is rusty - the side thats not working correctly should be the rusty one
usually it's the outside that gets rusty when the cars been standing (overnight etc) if it doesn't clean off it's usually down to the caliper sliders sticking (unless you've got 4 pot calipers - I've not looked at a GTC brakes)
retrofitted = DAB+, GM dog guard, GM reversing camera