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braking system - Sierra

onlckedonlcked Member Posts: 1
edited April 2018 in GMC
i have a 2007 GMC SIERRA P/U 4.8L ENGINE AND THE BRAKES ARE LOCKING UP FOR NO REASON. IT HAPPENS ONCE IN A WHILE. ANY IDEAS.
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  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    The usual suspects would be a kinked brake line or deteriorating flex line; possible sticking in caliper pistons; frozen caliper slides. On an old truck like this, any one of those, or even more unusual things, are possible.

    Certainly it's time to go up on the rack and pull all the wheels. That's also a good time for a brake fluid flush if you haven't done that in years.
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