Where is the rear abs sensor on a 2004 silverado 4x4

SOURCE: 2001 silverado 4x4 abs brake keeps coming on

in these trucks if the front abs activates at low speeds it is normally because of the wheel speed sensors in the front hubs. easy fix is to remove wheel speed sensor from wheel bearing. clean and file cast surface of bearing to allow sensor to move closer to internal reluctor ring. what happens is over time the casting rusts and creates a larger gap. please rate if this works.

Harvey N Tawatao

• 3854 Answers
• Posted on Jun 22, 2009

SOURCE: abs comes on at low speed on dry roads

One of the sensors has gone bad and needs to be replaced, the other thing to that would also do that is the ABS sensor is dirty or needs to be re gaped to the speed ring on the hub. There was a issue bulletin with your Tahoe on the ABS activating under 8 km/h. Good luck and hope this helps, if not clean out the sensor with brake parts cleaner and check the wire harness and ABS sensor bracket. Re gap the sensor to the speed ring hub. Here is the bulletin. Anti lock Brake (ABS) Activation at Low Speeds (Clean Wheel Speed Sensor Mounting Surface) #03-05-25-007C - (05/16/2006) 2001-2006 Chevrolet Suburban, Tahoe

SOURCE: knock sensor on 2001 chevy silverado

on the 4.3l version the knock sensor is on the back left side of the engine right by the bell housing. on the bigger engines they are below the intake manifold in the engine valley

SOURCE: What size torx bit do I use for rear caliper guide

Just buy the whole kit, you will need them for working on other items also.

SOURCE: 2004 silverado 4x4 2500 left front wheel bearing

1. Raise and support the vehicle.
2. Remove or disconnect the following:
   
   Tire and wheel assembly Caliper and rotor Wheel speed sensor and brake hose mounting bracket bolt from the steering knuckle Electrical connection for the wheel speed sensor Front drive halfshaft assembly on four wheel drive models Hub and bearing assembly mounting bolts Hub and bearing assembly O-ring seal from the steering knuckle bore (2500 series)
   
3. Clean and inspect the O-ring seal

1. Clean all corrosion or contaminates from the steering knuckle bore and the hub and bearing assembly.
2. Install the O-ring to the steering knuckle (2500 series).
3. Lubricate the steering knuckle bore with wheel bearing grease or the equivalent.
4. Install or connect the following:
   
   Hub and bearing assembly Hub and bearing assembly mounting bolts. Tighten the bolts to 133 ft. lbs. (180 Nm). Front drive halfshaft assembly on four wheel drive models Electrical connection for the wheel speed sensor Wheel speed sensor and brake hose mounting bracket bolt to the steering knuckle. Tighten to 106 inch lbs. (12 Nm). Rotor Tire and wheel assembly.