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2007 Silverado - ABS Lite #4666723
02/15/18 11:30 AM
02/15/18 11:30 AM
Joined: Jan 2013
Posts: 2,068
Texas
WyrTwister Offline OP
WyrTwister  Offline OP
Joined: Jan 2013
Posts: 2,068
Texas
Staying on about 1/2 the time . Brake reservoir is full .

What to check first ? Wheel sensors & wiring ?

Thanks , :-)


Wyr
God bless
Re: 2007 Silverado - ABS Lite [Re: WyrTwister] #4666736
02/15/18 11:43 AM
02/15/18 11:43 AM
Joined: Jun 2017
Posts: 613
DFW
JustN89 Offline
JustN89  Offline
Joined: Jun 2017
Posts: 613
DFW
In my experience, intermittent lights are often sensors going out. I'd hazard a guess that you have a wheel speed sensor on the way out.

Re: 2007 Silverado - ABS Lite [Re: WyrTwister] #4666738
02/15/18 11:46 AM
02/15/18 11:46 AM
Joined: Aug 2004
Posts: 1,401
VA
Rhymingmechanic Online content
Rhymingmechanic  Online Content
Joined: Aug 2004
Posts: 1,401
VA
Check for codes?

I got ABS and a bunch of other warning lights on my Vibe, and Advance Auto's scanner was able to pull ABS codes. The problem turned out to be a bad wheel sensor and harness.

Re: 2007 Silverado - ABS Lite [Re: WyrTwister] #4666739
02/15/18 11:46 AM
02/15/18 11:46 AM
Joined: Sep 2015
Posts: 1,588
USA
mk378 Offline
mk378  Offline
Joined: Sep 2015
Posts: 1,588
USA
Read the code.

Re: 2007 Silverado - ABS Lite [Re: JustN89] #4666848
02/15/18 01:51 PM
02/15/18 01:51 PM
Joined: Nov 2003
Posts: 1,205
Middle of Iowa
DriveHard Online content
DriveHard  Online Content
Joined: Nov 2003
Posts: 1,205
Middle of Iowa
Originally Posted By: JustN89
In my experience, intermittent lights are often sensors going out. I'd hazard a guess that you have a wheel speed sensor on the way out.


Probably this. Every ABS light I have ever had was an indication that a wheel bearing was soon to follow.


Smile, it increases your face value
2013 Fiat 500 Abarth mod heavy (my DD)
2018 Alfa Romeo Stelvio TI Sport (wife's)
2011 Silverado Crew Cab LT 6.2L/6spd (tow pig)
2007 Nissan Xterra (trail toy)
Re: 2007 Silverado - ABS Lite [Re: WyrTwister] #4666854
02/15/18 01:59 PM
02/15/18 01:59 PM
Joined: Dec 2006
Posts: 8,449
Illinois
mrsilv04 Offline
mrsilv04  Offline
Joined: Dec 2006
Posts: 8,449
Illinois
My neighbor just went through this with an '09 Silverado. The only thing that he could find that was marginal with the braking system was that the rear brake shoes were just about gone. He replaced the shoes, and the light has stayed off since.


2004 Silverado - on its 3rd Jasper engine in less than one year.
Re: 2007 Silverado - ABS Lite [Re: WyrTwister] #4666891
02/15/18 02:41 PM
02/15/18 02:41 PM
Joined: Nov 2006
Posts: 20,562
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,562
MA, Mittelfranken.de
IIRC these use a separate ABS sensor, look for metal particles or other junk on the magnet. Many times rust from the brake shield collects on them and will cause an intermittent light.

Edit: Next time the light is on use an ABS scanner to determine the offending sensor, clean before replace.

Last edited by Trav; 02/15/18 02:42 PM.

ASE L1, Master. Deutsch Meisterbrief.
Re: 2007 Silverado - ABS Lite [Re: WyrTwister] #4667251
02/15/18 08:21 PM
02/15/18 08:21 PM
Joined: Jan 2013
Posts: 2,068
Texas
WyrTwister Offline OP
WyrTwister  Offline OP
Joined: Jan 2013
Posts: 2,068
Texas
I have a scanner that may or may not read ABS codes . May try it in the next few days .

Just moved into this truck earlier in the week . Mine was totaled & this is / was the spare company truck .

Any idea if ABC codes are stored , after the ABS lite goes out ?

Thanks , :-)
Wyr
God bless


Wyr
God bless
Re: 2007 Silverado - ABS Lite [Re: WyrTwister] #4667314
02/15/18 10:42 PM
02/15/18 10:42 PM
Joined: Dec 2013
Posts: 2,432
Fort Worth, Texas
clinebarger Offline
clinebarger  Offline
Joined: Dec 2013
Posts: 2,432
Fort Worth, Texas
The EBCM stores history codes, If you have a front WSS code.....I would start with jacking up the truck & checking for a loose wheel hub bearing. Corrosion isn't an issue in most parts of Texas.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: 2007 Silverado - ABS Lite [Re: clinebarger] #4667512
02/16/18 07:58 AM
02/16/18 07:58 AM
Joined: Nov 2006
Posts: 20,562
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,562
MA, Mittelfranken.de
Yes why would the brake shield be rotten in Texas, not everybody lives with rusty rotten stuff like us poor basta.... LOL


ASE L1, Master. Deutsch Meisterbrief.
Re: 2007 Silverado - ABS Lite [Re: clinebarger] #4667539
02/16/18 08:27 AM
02/16/18 08:27 AM
Joined: Jan 2013
Posts: 2,068
Texas
WyrTwister Offline OP
WyrTwister  Offline OP
Joined: Jan 2013
Posts: 2,068
Texas
Originally Posted By: clinebarger
The EBCM stores history codes, If you have a front WSS code.....I would start with jacking up the truck & checking for a loose wheel hub bearing. Corrosion isn't an issue in most parts of Texas.





Do not hear / feel any bearing problems . For what that is worth .

In my youth , pickup wheel bearings , were the kind that you could take out and hand pack . Would a 2007 Chevy have that type or the sealed bearings ?


Wyr
God bless
Re: 2007 Silverado - ABS Lite [Re: Trav] #4667540
02/16/18 08:28 AM
02/16/18 08:28 AM
Joined: Jan 2013
Posts: 2,068
Texas
WyrTwister Offline OP
WyrTwister  Offline OP
Joined: Jan 2013
Posts: 2,068
Texas
Originally Posted By: Trav
Yes why would the brake shield be rotten in Texas, not everybody lives with rusty rotten stuff like us poor basta.... LOL


For that I am thankful !


Wyr
God bless
Re: 2007 Silverado - ABS Lite [Re: Trav] #4668376
02/16/18 11:22 PM
02/16/18 11:22 PM
Joined: Dec 2013
Posts: 2,432
Fort Worth, Texas
clinebarger Offline
clinebarger  Offline
Joined: Dec 2013
Posts: 2,432
Fort Worth, Texas
Originally Posted By: Trav
Yes why would the brake shield be rotten in Texas, not everybody lives with rusty rotten stuff like us poor basta.... LOL


I've seen some Northeast/Midwest cars roll through the shop over years.....[censored]!!! I applaud you mechanics that have to deal with that on every single vehicle.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: 2007 Silverado - ABS Lite [Re: WyrTwister] #4668383
02/16/18 11:40 PM
02/16/18 11:40 PM
Joined: Dec 2013
Posts: 2,432
Fort Worth, Texas
clinebarger Offline
clinebarger  Offline
Joined: Dec 2013
Posts: 2,432
Fort Worth, Texas
Originally Posted By: WyrTwister
Originally Posted By: clinebarger
The EBCM stores history codes, If you have a front WSS code.....I would start with jacking up the truck & checking for a loose wheel hub bearing. Corrosion isn't an issue in most parts of Texas.





Do not hear / feel any bearing problems . For what that is worth .

In my youth , pickup wheel bearings , were the kind that you could take out and hand pack . Would a 2007 Chevy have that type or the sealed bearings ?


They can be loose enough to mess with the sensor air-gap but not make noise.....Yet.

Some bearings make a TON of noise & not have any slack.....Just last week I did a rear wheel bearing on a 2003 Sequoia that was raising [censored] with .003" axial end play & .001 radial end play.

GM has used sealed hub bearing in all light duty trucks since the introduction of the GMT-800 platform, And only 2wd GMT-400 trucks had seviceable tapered bearings.

Retrieve the Current & History DTC's out of the EBCM & proceed from there!


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: 2007 Silverado - ABS Lite [Re: WyrTwister] #4668870
02/17/18 03:41 PM
02/17/18 03:41 PM
Joined: Sep 2007
Posts: 8,598
Florida
artificialist Offline
artificialist  Offline
Joined: Sep 2007
Posts: 8,598
Florida
I am not sure if there are ABS sensors at both rear wheels, or if there is one sensor at the differential gear. I have been told that if you have an ABS sensor that reads the rear differential, the magnet may attract metal from the gear oil. The solution is to remove the sensor, clean it, and replace your gear oil.


2010 Lancer Ralliart Sportback

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