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About CB15LTZ

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  1. Vacuum pump & mechanics

    Happened to me, as well. Was on vacation and lost brakes as I pulled into a hotel parking lot. A local mechanic diagnosed a bad brake booster. Had that replaced and installed a new booster line. That helped me finish vacation and make it home. Once I made it home, I took it to a Chevrolet dealer. Got the news that I have a bad vacuum pump. I’ll be out about $900 total, assuming I don’t have to replace something else.
  2. Recently drove 2015 Silverado LTZ on long trip for vacation. Truck has right at 48,000 miles on it. Brakes started acting up as soon as I arrived. I noticed the brake pedal acting up at a few red lights and then when we got to hotel the pedal went all the way to the floor before it came to a stop. Had it looked at by a mechanic. His computer showed a bad brake booster, so had that replaced and a new brake booster line, as well. Everything else looked fine. That made the issue better, but still having problems when in reverse and if the brakes are pumped a couple of times before coming to a complete stop. On the way home I finally got a service brake assist message. Just wondering if if anyone else has experienced similar issues and what ended up being the problem?

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