Brake Lockup Madness! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BruthaMan · 08-29-2010, 02:03 PM

Hey Guys,

Haven't been around much lately as we decided to move from Amarillo down to San Angelo. Been a long move, still not in the home yet.

I was out driving the truck (see signature) to wash it and on the way back to the hotel, the brakes suddenly locked up. I didn't even press on them, just driving along at 25mph and bam...the brakes went to the floor and the truck stopped.

Having never experienced or heard of this before, naturally I did what any dedicated Chevy guy would do, I put her in park and opened the hood. Disconnected the vacuum line to the booster then check, and the brakes came back up. Re-inserted the vacuum and brakes back down to the floor again.

There is plenty of vacuum at the booster line. Could suck the chrome off a trailer hitch.

Did some checking on the forum, but not coming up with anything like this.

Any ideas what happened and/or what I should be looking for? Everything had been fine, no issues at all. Just locked up and will not unlock unless vacuum is off the booster.

GmtGmt · 08-29-2010, 02:23 PM

fallty brake booster

BruthaMan · 08-29-2010, 07:53 PM

Thanks Thomas!

08-29-2010, 02:03 PM	#1
BruthaMan US Army Veteran Join Date: Nov 2008 Location: Central Texas Posts: 1,049	Brake Lockup Madness! Hey Guys, Haven't been around much lately as we decided to move from Amarillo down to San Angelo. Been a long move, still not in the home yet. I was out driving the truck (see signature) to wash it and on the way back to the hotel, the brakes suddenly locked up. I didn't even press on them, just driving along at 25mph and bam...the brakes went to the floor and the truck stopped. Having never experienced or heard of this before, naturally I did what any dedicated Chevy guy would do, I put her in park and opened the hood. Disconnected the vacuum line to the booster then check, and the brakes came back up. Re-inserted the vacuum and brakes back down to the floor again. There is plenty of vacuum at the booster line. Could suck the chrome off a trailer hitch. Did some checking on the forum, but not coming up with anything like this. Any ideas what happened and/or what I should be looking for? Everything had been fine, no issues at all. Just locked up and will not unlock unless vacuum is off the booster. __________________ 1972 C10 Highlander - The making of a daily driver Last edited by BruthaMan; 08-29-2010 at 02:04 PM.

08-29-2010, 07:53 PM	#3
BruthaMan US Army Veteran Join Date: Nov 2008 Location: Central Texas Posts: 1,049	Re: Brake Lockup Madness! Thanks Thomas! __________________ 1972 C10 Highlander - The making of a daily driver



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