2004 silverado service brake booster comes across dic upon start up the brakes function fine there are no leaks under the truck did some reading on this issue. My 2004 chevy silveradoserice brake booster lights upi also have ahumming noise coming from small black cannister attached to boosterbut brakes fill fine the service brake booster message is used to notify the driver of a supplemental brake assist sba concern on vehicles equipped with rear disk brakes and a vacuum brake booster . The message just started find answers to your 2004 chevrolet silverado 1500 question from certified mechanics and auto experts dashboard message reads service brake booster 2004 chevrolet silverado 1500. Service brake booster message chevy truck forum silverado sierra gmc truck forums service brake booster message jun 09 2011 259pm went crashing through some huge mud puddles the other day now i see the service brake booster in the dic 2004 4x4 where is the brake booster is it easy to replace or clean. 2004 chevrolet silverado 1500 48 po1637 and service brake booster light service a fleet of these trucks and have 2 of them doing the same thing both over 100k shop key has no listing for this dtc vehicle is not charging
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