Brakes

75

Asked by Apr 26, 2017 at 01:08 PM about the 2009 GMC Sierra 1500 Work Truck

Question type: Maintenance & Repair

Soo I'm doing brakes on a work truck
calipers pads an shit. There was like no
pedal at all had to push it to the floor just
to come to a stop so after the breaks I bled
the lines an air just keeps coming out every
time I do it... give it a couple pumps won't
build up pressure at all an air still comes
out... Ever come a cross that ??

1 Answer

785

It sounds like you may have air getting into one of the brake lines. Check all four of the flexible lines at each wheel for cracks or leaking. Then check all the lines where connections are made. If all of those are ok, then check the caliper pistons and/or wheel cylinders for leaks. If all checks out, try picking up a vacume speed bleeder from Auto Zone. This will help pull all the air out of the system.

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