Question about 1999 GMC Sierra

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Why do my abs light and brake light come on sometime

Dont come on all the time

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  • 36 Answers

You may have a wheel bearing going out that could cause it

Posted on Apr 19, 2013

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Posted on Jan 02, 2017

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My Toyota Harrier 2003 Premium L ABS and Handbrake indicator light is on sometimes but my mechanic has check on the brake pad, brake fluid and others everything seem to be in order but just don't...


Could it be a broken abs speed sensor wire to one of the wheels . And for the hand brake sometimes on vehicles with the handbrake between the seats some junk will get in between the brake lever and the down position causing the light to intermittently go on or could be a switch or wire thing again .

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My brakes dont work properly untill the abs light glows on my dash in a 98 ford windstar what is this problem


abs unit fault. could be the connector the seals do fail on them. you will need to take the connector plug off the unit clean it and check the seal.

Feb 19, 2014 | Cars & Trucks

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1999 1500 ls abs and brake light on at same time then off just sometime


WHEN YOU SEE BOTH LIGHTS AT THE SAME TIME YOU ARE HAVING BRAKE FAILURE EITHER MASTER CYLINDER FAILING OR ABS BRAKE MODULATOR FAILING.CHECK BRAKE FLUID LEVEL IN BRAKE MASTERCYLINDER. IF BRAKE FLUID LEVEL OKAY. I HAVE SEEN CASES WHERE ALTERNATOR FAILING CAUSING BATTERY VOLTS TO DROP AT 11.8 VOLTS CHECK BATTERY VOLTS AT BATTERY WHILE ENGINE RUNNING SHOULD BE 13.5 TO 14.5 VOLTS AT BATTERY WITH ENGINE RUNNING.IF BATTERY POWER IS OKAY.MORE LIKELY BRAKE MASTERCYLINDER AND ABS MODULATOR COULD BE FAILING. TAKE VECHICLE TO A GARAGE LET THEM CODE SCAN TO SEE WHAT CAUSING ABS AND BRAKE LIGHT TO COME ON.CODE SCANNING WILL SAVE YOU TIME AND MONEY.

Sep 11, 2011 | 1999 Chevrolet Silverado 1500

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Hi i have a saab 93 1999 2lt se with both the brake and abs warning lights on, ive had new pads allround checked fluid level fuses connections to abs pump etc all ok checked connections on abs ecu all...


i know this may sound strange but remove the brake fluid cap. on the cap is a sensor, do this away from any other vehicle and yours and shack the sensor by the cap a good few times. as fast as you can. then re fit the sensor see if the lights go off. sometimes it works sometimes not. this just because the brake light is on, this only usually comes on when the sensor thinks there is low brake fluid. and it can also tell the abs as well. and this is why both the lights are on. also make sure the fluid is at full markings.

Jul 03, 2017 | Saab 9 3 Cars & Trucks

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2006 Town & Country ABS light stays on


when the abs light comes on your car is letting you know that it has shut down the abs system because of a problem. so you are braking with regular conventional brakes which is perfectly safe. any time a component of the antilock brake system malfuntions the abs system is shut off and the light will come on to let you know. the most common problem is that the wheel speed sensors go bad. a trouble code will be stored in the abs control module you can have the abs module scanned to see what the problem may be. But dont worry you car is safe to drive. you just dont have the antilock brake option.

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1 Answer

Abs 1998 ford windstar


Really the best thing you can do is unplug one of the abs sensor wires by the front wheel and get it fix when you can..Really like they said you dont need them but they should have unhooked it for you because sometimes them things will engage when you dont want them to and that could get you in a wreck..But by unplugging the sensor it will by-pass the abs and it wont do that any moe.It will stop when you want to stop.But when it is slippery out side you know not to lock up the brakes..If you lock them up in slippery condition you will slide of the road..But if you know how to pump the brakes you'll have no problem slipping around..But other than that you really dont need them..thats really the only timee they really kick in is when its sliding.If you find someone later that will work on it cheap thats great..But dont forget to unplug that wire..That will stop that scarey feeling you get when you try to stop..Hope this helps you and have a great night!!!!!!!

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Abs warning lights,comes on sometimes.


its normal, whenever one or more wheel dont get enough traction the abs will kick in.. light up.

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Anti lock brakes


depending on the system if it is 2 channel or 4 channel one of the sensors that are located on the backing plate located behind calipers is eithier faulty or dirty you can try brake cleaner these sensors use a small magnet pickup device to sense when the wheel "locks up"

Jul 20, 2008 | 1985 Audi 5000 S

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