ABS light on

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by pikefisher, Aug 16, 2013.

  1. pikefisher

    pikefisher Member

    Thanks for looking, My ABS light came on then went out for a while then came on, then off a while, now it is on all the time. Possible brake shoes? I have good pedal and stopping power, was towing a popup camper when this happened un hooked the trailer same thing, light stays on . 2005 Silverado.
  2. bazar01

    bazar01 Rockstar 100 Posts

    Could be as simple as cleaning build up on wheel sensors or cracked solder joints on ABS computer.

    Mine turned out to be cracked solder on the brain. Reflowing relay solder joints on the pcb inside the brain turned off both the ABS and brake lights in the dash. Hardest part of the job was removing the brain from the pump assembly under the truck and opening the box secured by rubbery sealant.
  3. My dash lights all malfunctioned for no reason. It started with my ABS light and eventually worked it's way around. I know in 2001 models, this was notorious. My dad has a 2004 and his did the same thing a few months ago. If there's no other symptoms, I bet that's what it is. I think the ABS light is only SUPPOSED to come on when the ABS does.
  4. pikefisher

    pikefisher Member

    What to do about a dash light malfunction? Can I fix?
  5. I think the whole cluster needs to be replaced, sadly. There was a recall for the instrument cluster for your year model actually (and mine, but that shipped sailed many moons ago).



    HOWEVER, if it continues and all of your other functions and lights don't whack out (if I recall, it took a couple of months for all mine to start coming on at random) it could very well just be that your front ABS sensors have a short and need to be replaced.

    Have you scanned the OBDII for any codes? I think if the sensors were malfunctioning, there would be a code...otherwise it's the dash panel Silverado gremlin.
  6. McClintoc

    McClintoc ɹoʇɐɹǝpoɯ Staff Member 3 Years 1000 Posts

    [MENTION=60171]pikefisher[/MENTION] I'm just looking to eliminate possibilities but have you recently purchase new tires?
  7. pikefisher

    pikefisher Member

    No on the tires, any one know if it hurts any thing to drive this way? We have a trip planed.

    99'HEARTBEAT MODERATOR Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    Regarding....."hurts any thing to drive this way? We have a trip planed."

    From the 2005" Silverado Owners Manual, it Expresses the following regarding the ABS Light,

    Anti-Lock Brake System Warning Light:
    With the anti-lock brake system, this light will come on when you start your engine and may stay on for several seconds....That’s normal. If the light doesn’t come on then, have it fixed so it will be ready to warn you if there is a problem.

    If the light stays on, or comes on when you’re driving, your vehicle needs service. You will also hear a chime sound when the light is on steady. If the regular brake system warning light isn’t on, you still have brakes, but you don’t have anti-lock brakes. If the regular brake system warning light is also on you don’t have anti-lock brakes and there’s a problem with your regular brakes. In addition to both lights, you will also hear a chime sound on the first occurrence of a problem and each time the vehicle is shut off and then restarted
  9. pikefisher

    pikefisher Member

    Thanks heartbeat: As long as its not a danger, I will use it and ask the shop when we get home ,thanks for all the reply's.
  10. j cat

    j cat Epic Member 5+ Years 1000 Posts

    with the ABS light on I would check the front hubs. also measure the front hub wheel sensors for proper AC VOLTS when rotating the hub at a good rate by hand. the voltage must be above .3 volts AC. a good new sensor puts out .5 volts AC or more.

    you can also have the GM specific ABS code retrieved and post here for a better idea on the failure.

    these codes require a special GM code reader.

    the proper repair if the hubs are defective is to purchase hub with a calibrated sensor .

    I would only use Timken hubs . stay away from Chinese parts with this .

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