2001 CHEVROLET S-10
108,000 MILES
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JIMELGINJR
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  • 3 POSTS
My power brake vacuum pump won't shut off. Even if I shut pickup off. Is the power source to pump constant hot? Trying to figure out if I have a short or pump has a stuck switch.
Mar 28, 2013 at 12:46 AM
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ASEMASTER6371
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it may be the relay for the hydravac pump.

Roy
Mar 28, 2013 at 12:48 AM
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JIMELGINJR
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In the fuse box
Mar 28, 2013 at 12:50 AM
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JIMELGINJR
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  • 3 POSTS
If I pull the abs fuse it shuts off
Mar 28, 2013 at 1:00 AM
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ASEMASTER6371
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ok, not a hydrovac. it is an electric pump for the abs. the unit is most likely the issue. have someone look in the system with a scanner to see if it is commanded on

Roy
Mar 28, 2013 at 2:03 AM