The ABS light is on?

Tiny
ANONYMOUS
  • MEMBER
  • 2005 CHEVROLET SILVERADO
The ABS light is on, and truck will make ABS sounds just before stopping with brakes applied. Getting codes C0035, U1064

Can I do some further testing to find the problem? Thanks
Wednesday, November 28th, 2012 AT 2:13 AM

39 Replies

Tiny
SATURNTECH9
  • MEMBER
The.C0035 is left front wheel speed sensor do you have a multi meter to do some testing?Also the u1064 is lost communication with the bcm.

These videos will help us fix it

https://youtu.be/Pb6nXV-iamI

and

https://youtu.be/rTtAnsOlZU4

Please run down these guides and report back.
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Wednesday, November 28th, 2012 AT 3:09 AM
Tiny
J.STIEG
  • MEMBER
Yes, I have a muti-meter. What setting should I have it on.
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Wednesday, November 28th, 2012 AT 4:34 AM
Tiny
SATURNTECH9
  • MEMBER
Ohms unplug the left front wheel speed sensor and see what the sensor measures at ohms wise?
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Wednesday, November 28th, 2012 AT 4:52 AM
Tiny
J.STIEG
  • MEMBER
Front left sensor is 960 ohms, and front right sensor is 940 ohms
All done at 25F.
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Wednesday, November 28th, 2012 AT 2:08 PM
Tiny
SATURNTECH9
  • MEMBER
Thed speed sensor reading is good I posted the trouble tree for you to follow for the code C0035 hopefully its a active code meaning as soon as you clear it it will reset itself?
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Wednesday, November 28th, 2012 AT 8:33 PM
Tiny
HOMER1967
  • EXPERT
Check the ignition b 50 amp fuse in the underhood fuse block, if it is blown it will cause a loss of communication. Also I have seen many bad ignition switches cause the issue you are having.
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Thursday, November 29th, 2012 AT 2:40 AM
Tiny
J.STIEG
  • MEMBER
I used the trouble tree charts, and adjusted the wheel speed sensor. The ABS light was coming on at every stop before, now it has not been on once, also erased the codes. But ABS still engages on a dry road(NO ABS light this time though). Anything I can do?
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Thursday, December 6th, 2012 AT 5:36 AM
Tiny
SATURNTECH9
  • MEMBER
I would recheck the wheel speed sensor adjustment since that cleared up the light. Your going to have to get a scan tool that can you watch the wheel speeds to see which one is miss reading and causing the abs to kick on. Sounds like the wheel speed sensor is not reading the correct speed but not setting a code just causing the abs to kick on now.
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Thursday, December 6th, 2012 AT 6:21 PM
Tiny
HOMER1967
  • EXPERT
Yeah, I agree with saturn tech. Thanks for choosing 2carpros
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Friday, December 7th, 2012 AT 3:44 AM
Tiny
JIMA102
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 42,000 MILES
Changed gear ratios in my 2005 chevy truck now abs light is on? Anyway of fixing this without having to go to the dealer and get a new download?
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Wednesday, September 2nd, 2020 AT 11:58 AM (Merged)
Tiny
FACTORYJACK
  • EXPERT
First of all, determine that the abs code is related to your retrofit. It is a good possibility that a recalibration is needed, I am not certain if a ratio change will cause an ABS fault. I would be more apt to think it would cause speedometer, or speed related faults, maybe a check engine light.
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Wednesday, September 2nd, 2020 AT 11:58 AM (Merged)
Tiny
FREND40
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 46,000 MILES
My abs light is on and I was wondering what could be the cause of this?
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Wednesday, September 2nd, 2020 AT 11:58 AM (Merged)
Tiny
SERVICE WRITER
  • EXPERT
MAy be a wheel speed sensor most likely, a harness or the abs unit. IT may be just a contaminated sensor that can be cleaned, which is common n the front sensor.

You need to get the codes read from the computer to start diagnosing.
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Wednesday, September 2nd, 2020 AT 11:58 AM (Merged)
Tiny
RGONZALES
  • MEMBER
  • 2004 CHEVROLET SILVERADO
My ABS light is on what should I do?
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Wednesday, September 2nd, 2020 AT 11:59 AM (Merged)
Tiny
FIREFIGHTER0612
  • MEMBER
Hello,

It sounds like you have a wheel speed sensor that is out here is a video to show you how to get the codes so you can figure out which one it is ior you can test the sensors manually using this guide.

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

and

https://youtu.be/rTtAnsOlZU4

and

https://youtu.be/ZgiPRG6jffc

Please run down these guides and report back.

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Wednesday, September 2nd, 2020 AT 11:59 AM (Merged)
Tiny
ZIZAMARE
  • MEMBER
Thanks for this post I had this problem and had to replace the front bearing hub and ABS wheel sensor on the right side FYI all fixed! Cost me $154.00
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Wednesday, September 2nd, 2020 AT 11:59 AM (Merged)
Tiny
FMAR10
  • MEMBER
  • 2004 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 90,000 MILES
My ABS light just came on, my brakes don't feel any different, Does this need to be looked at ASAP and should a dealer look at this.
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Wednesday, September 2nd, 2020 AT 11:59 AM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
There is no need for immediate concern. You probably have a bad wheel sensor on one of the wheels.
However, you should have a shop scan the ABS system to see whats wrong, as this is the best way to pinpoint the issue quickly without spending money on parts you do not need.
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Wednesday, September 2nd, 2020 AT 11:59 AM (Merged)
Tiny
BILLH42
  • MEMBER
  • 2004 CHEVROLET SILVERADO
  • 6.6L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 165,000 MILES
When the vehicle is started the ABS / Service Brakes lights come on along with a Service Brakes Soon message. The problem is intermittent and does not show up on every start. Shutting the engine off and restarting usually clears it. There are no active DTC codes associated with this problem so it would appear to be a false indication.

NOTE: In Jan 2014 the instrument cluster was replaced for an inoperable speedometer

Thank You.
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Wednesday, September 2nd, 2020 AT 11:59 AM (Merged)
Tiny
HMAC300
  • EXPERT
Have it scanned by a pro to see what is wrong with abs system autoparts can't do this.
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Wednesday, September 2nd, 2020 AT 11:59 AM (Merged)

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