Question about 2003 GMC Safari

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Brake and abs lights stays on in a 2003 gmc safari wile driving after a small period of time. put new pads and there's no leaks in the calipers

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Have the ABS Distribution Unit/Computer checked at the dealer.

NOTE: ABS Unit located under the vehicle, under the drivers seat. Listen to it with the vehicle running with no brake on... if you hear ABS motor running continuously, unplug ABS fuse in fuse block under hood to turn ABS motor off and be able to use vehicle in the meantime whether you decide to get the ABS fixed or not.. This will not affect brake operation, but will disable ABS feature. ABS and Brake idiot lights will remain on. No way to turn them off short of having the correct repair done. ABS Distribution Unit/Computer is very expensive part and requires expensive labour for replacement.

Posted on Jul 25, 2010

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Posted on Jan 02, 2017

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Why does my brake light and the a b s light comes on when this vehicle has brand new calipers and pads on


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1 Answer

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2000 GMC Safari anti-lock brakes


There was actually a recall for this. Go to your local GMdealer and have them check your VIN for a recall. If not under recall get out of there its easy to repair yourself don't let'em fool you.Remove the front pads caliper and rotors. Locate the abs sensor mounted to the wheelbearing assembly by a small socket head cap screw (Allen wrench). Removethe bolt and softly gently/wiggle the abs sensor around until it pops upout of the hole. some will break, which is why it wouldbe nice if the recall applies to your vehicle that way if they break gm replaces. Once you get both sides removed, clean themounting surface of all rust or build up with w-d 40 and small steel toothbrush then wipe off excess with clean rag and mild soap and warm water, dry completely make sure no spray residue exist on parts, Next apply a thin layer of lubricant grease to preventfuture rusting and reassemble.The rust build up under the sensor is causing the angle to change resultingin inaccurate wheel speed readings in the abs module your abs module will interprets this asa wheel is either slipping or skidding and applies your abs. This should make you happy with no more irritations. Please rate me. If you need further assistance you can always ask me. Good luck with this.

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If you forced the pads back into the calipers without loosening the bleeders you probably forced gunk into the abs modulator valves. Sometimes doing the automated bleed proceedure (need Tech or Bi Directional Scanner) will bring things back to life.

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