Thursday, January 19, 2012

"1999 GMC 1500 Sierra: The Anti-lock Breaking System Light Problems"

Green 1999 GMC 1500 Sierra Front Right View

I have an 1999 GMC 1500 Sierra pickup. The ABS light came on and there is a humming sound coming from underside driver side. I have disconnected the battery and reattached a couple of times but the light stays on and the sound is still there. Thanks for any help.
Answer: There is a control module for the anti lock on top of the abs pump. It has a circuit board and relays in it. Sounds like it has gone bad and needs replaced.

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