Chevy Tahoe ABS Brakes At Slow Speeds

I have a 2003 Tahoe that the ABS will come on just as you near a complete stop. What should I look for? 2003 Chevrolet Tahoe 5.3L.

I did replace the left front wheel bearing approx 1 year ago. It did not fail, but did have a little movement. Problem seemed to start about a month later. This is a 4x4.

Answer:
The most common cause for this is a bad front wheel speed sensor, or the mounting surface of the sensor to the hub has some corrosion on it, thus making the air gap between the sensor and reluctor wheel in the bearing too great.

I asked about the turning because if that were the case, then i would suspect a faulty harness to one on of the front sensors. The wires break inside the insulation and cause this problem when slowing as turning.

I would suspect that the problem is in the other side that has not been replaced. You can remove the speed sensor, clean the mounting surfaces of any rust. Removing the sensor to do this would also indicate a bad sensor if you remove the sensor and the outer sleeve of the sensor stays in the hub.


2005 CHEVROLET SILVERADO. Engine size = 4.3L V6 Vortec. Did a FRONT END ALIGNMENT, LOOSE LOWER CONTROL ARM, REPLACED WORN ROTORS.

Question:
BRAKE PEDAL WILL VIBRATE WHEN ALMOST STOPPED. FOUND CRACKED WHEEL SPEED SENSOR. CAN I REPLACE THE SENSOR ITSELF WITH DORMAN PART # 970011, OR SHOULD THE ENTIRE WHEEL HUB ASSEMBLY BE REPLACED?

Answer:
Yes you can replace the sensor. These are common for causing this problem you have. If the sensor broke and a piece is missing, then it may have fallen into the hub. If that happened, it will destroy the hub.

If the outer casing of the sensor just broke off and it is stuck in the mounting hole of the hub, then you can just pry that piece out and you will be ok. With new sensor in hand you will be able to tell if any pieces are missing and possibly in the hub.

Depending on how the sensor is cracked, suggest looking in the sensor mounting hole of the hub while turning the hub to look at the toothed ring and make sure it is not damaged, or possibly caused the sensor to crack.I would suggest a GM sensor. Have seen a few times where an aftermarket sensor can cause different problems because they do not send out a perfect signal, but that is not real common. Up to you.

Question:
Truck had been sitting 2 years.would occasionally start, sts light came on when pedal was depressed. replaced pmd, and unit now starts every time.replaced pedal assembly but light still comes on, and loses all pedal response.this occurs before unit is even put in gear. Also upon start up, engine will automatically Idle up to 2800 rpm for about 4 seconds then idle back down. what am I overlooking ? 1994 k2500 suburban Engine size = 6.5 turbo F Warning_lights = service throttle soon. Computer vcodes = 23 27 84 Repairs made= Installed Standadyne pmd with relocator, pedal assembly, new batteries, cleaned cables and grounds, cleaned connectors added dielectric grease.

Answer:
If none of the codes came back after the repairs, then you just need to relearn the idle. If the light comes back on and all codes returned, you may have a wiring problem. If the accelerator pedal did not fix the problem, then you have a wiring problem. Get an ohm meter and check continuity of the wires between the APP and the module. If the wires are OK, then either the module or ECM is bad.


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