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Wierd ABS issue 2005 3500 4x4 Diesel

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Old Dec 16, 2013 | 05:27 PM
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Default Wierd ABS issue 2005 3500 4x4 Diesel

Hi all, just a quick question to see if aanyone can point me at a solution.

2005 Ram 3500 4x4 4 door Diesel 48RE automatic.

Whi9le coming to a normal stop, @ 10 mph the abs pump comes on until the truck is at 3 or 4 mph. No warning lights come on. Brake condition all good at all 4 corners.

No engine light or ABS/Brake light on.

The only odd thing is my seat belt warning light flickers a little while driving.

Brakes work great otherwise.

Thanks in advance...
 
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Old Dec 20, 2013 | 12:23 PM
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OK I replaced both front hub sensors and the rear diff sensor.

This has not resolved the ABS activation at 10mph and below as you come to a normal stop.

Anyone ever seen this happen?
 
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Old Dec 20, 2013 | 12:28 PM
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Few Questions

Brake Fluid level is okay?

How many Miles on the truck?

How much of a lip has developed on each rotor?

How does the rotor surface look?
 
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Old Dec 20, 2013 | 01:53 PM
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I know that my 2000 Silverado had a recall for this happening. GM's fix was to clean the sensors and add wheel lubricant. Apparently they corroded prematurely.

Just because your sensors are changed doesn't remove the liability of rust in the Hub! If there is rust within the hubs, this will kick the ABS on AND ruin the new sensors you just installed. Also, warped rotors can cause a problem with ABS as well.
You can check the hub assembly with an AC volt meter and by spinning the wheel by hand. I'm not sure what the spec is but you can find it ithe Service Manual (downloadable via Weeahoe's post in FAQ section)
 
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