Well, a little mystery here, pestering me on and off since the Burb (2002 K1500) got a new set of Powerstop pads and rotors with new rear caliper pistons.
1. The brake pedal can do the ABS-like jitter (pulsing) when the road speed is below 10 mph, especially with the front wheel turning left or right.
2. The ABS light does not come on whet this happens. It is operational, it comes on with the dash light test (ignition on and engine start).
3. The live PID readings from the ABS speed sensors on the wheels during driving, and when the brake pedal does the ABS-like jitter, is somewhat weird. The wheel speed values from the sensors while driving straight ahead may vary between each other (and the speedo reading) by as much as 6 mph.
4. When this mysterious ABS-like brake pedal reaction happens and I continue to brake to park, the ABS speed sensors on the front left and rear right wheels keep reading more than 0 mph with the car stationary (the reading can be 1 to 4 mph, this varies); as if they output a false speed signal.
5. The brake system was bled after the brake job.
6. This thing happens erratically - some times 2 times in a row, sometimes every 6th brake operation to less than 10 mph.
7. No ABS trouble codes present.
Is it possible that at least 2 wheel speed sensors are shot? What about the ABS tone rings?
1. The brake pedal can do the ABS-like jitter (pulsing) when the road speed is below 10 mph, especially with the front wheel turning left or right.
2. The ABS light does not come on whet this happens. It is operational, it comes on with the dash light test (ignition on and engine start).
3. The live PID readings from the ABS speed sensors on the wheels during driving, and when the brake pedal does the ABS-like jitter, is somewhat weird. The wheel speed values from the sensors while driving straight ahead may vary between each other (and the speedo reading) by as much as 6 mph.
4. When this mysterious ABS-like brake pedal reaction happens and I continue to brake to park, the ABS speed sensors on the front left and rear right wheels keep reading more than 0 mph with the car stationary (the reading can be 1 to 4 mph, this varies); as if they output a false speed signal.
5. The brake system was bled after the brake job.
6. This thing happens erratically - some times 2 times in a row, sometimes every 6th brake operation to less than 10 mph.
7. No ABS trouble codes present.
Is it possible that at least 2 wheel speed sensors are shot? What about the ABS tone rings?