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Antilock brakes

chuckp

By chuckp
July 11, 2004 in 1999-2013 Silverado 1500 & Sierra 1500

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chuckp

Enthusiast

chuckp

Posted July 11, 2004

Posted July 11, 2004

My antilock brakes come on when i step on the brake at very slow speeds around 5mph..

any thoughts

99 chevy silv z74 5.3

chuck

budhayes3

Senior Enthusiast

budhayes3

Posted July 11, 2004

Posted July 11, 2004

Possibly some debris on one of the sensors, seems to be pretty common. If not, there may be a problem with the ABS ECU. My ABS used to be over sensitive, but not that bad. Had the ABS computer replaced for another problem and ever since the ABS seems to work more like it should. I'd definitly check the sensors first though.

snoman

Senior Enthusiast

snoman

Posted July 11, 2004

Posted July 11, 2004

It is a strange problem because it usually is not effective at 5 mph.

asepgrad98

Senior Enthusiast

asepgrad98

Posted July 12, 2004

Posted July 12, 2004

get a DVM and make sure your got atleast 100mV on all your ABS speed sensors while spinning the wheel as fast as you can with your hand.

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