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Old 01-05-2005, 01:35 PM   #1
dougo
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97 sierra spongy brake pedal

hi
97 brake probems 3500 7.4 spongy brake peddle ,will go to floor if pushed hard. I changed the master
cyl two times.I replaced front brake lines,pads,rear shoes,rear wheel cly.
blead brakes several times. any one else have this problem?
help thanks doug
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Old 01-05-2005, 02:39 PM   #2
GMMerlin
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3500 trucks have a hydroboost system..the pedal feel will be different.
The pedal will feel "spongy" during normal application.
Has the pedal feel changed from what was normal?
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Old 01-05-2005, 08:37 PM   #3
dougo
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I have owned the truck since 97 peddle pressure has changed I can push
it to the floor.feels like it has air in line that I cant ge out.help ! I my be behind you at a r&r crossing thanks doug
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Old 01-06-2005, 12:31 AM   #4
leeder70
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Re: 97 sierra spongy brake pedal

man sounds like and i know what you said earlier but still sounds like air in the lines.
i know the newer systems are a real bi*&^ to bleed.
just did a 98 jimmy and thought i might have gotten in over my head but finally got solid pedal after several and i mean several bleeds.
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Old 01-06-2005, 02:47 PM   #5
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I just read in a chiltons manual that you have to use a tech 1 scan tool
to bleed the abs box.????????????
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