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Old 08-07-2006, 11:42 AM   #1
Mrgonzo1
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Join Date: May 2004
Location: Clovis, California
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Unhappy 1987 S-15 GMC Power Booster

I have A 1987 S-15 GMC V6 2.8L and I am having issues with my brakes. It seems that when I press the brake pedal my rpm's increase slighty and decrease when I release it. I replaced the master cyclinder but I am still having issues when I use the brakes. My truck surges and scares the **** out of me when I come to a stop. I also noticed a slight hiss sound coming from the power booster inside the truck when I press the brake pedal. Could the power booster be the cause of this issue? Any help is appreciated.
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