Excess Gas Buildup in the Terrain's Brake Caliper Pistons

Posted on
Tagged
#brakes #recall
Author
Scott McCracken

GM says it needs to bleed the brake systems of 230,000 previously recalled cars. Some of the recalled vehicles have rear brake caliper pistons that have hydrogen gas trapped inside that could be released into the brake systems. ZF, the manufacturer of the brake pistons, didn't properly temper and chrome-coat the pistons, causing hydrogen gas to remain trapped in the bodies of the pistons.

Excess gas –– we’ve all had it, no-one likes it, and the same holds true for your braking system. This problem may cause your brake pedal to feel “spongy” but it’s unclear if it affects stopping distances.

This post originally appeared on chevroletproblems.com

Related GMC Generations

At least one model year in these 1 generations have a relationship to this story.

We track this because a generation is just a group of model years where very little changes from year-to-year. Chances are owners throughout these generation will want to know about this news. Click on a generation for more information.

  1. 2nd Generation Terrain

    Years
    2018–2021
    Reliability
    17th of 32
    PainRank
    2.51
    Complaints
    12
    Continue Front 3/4 view of a Terrain

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