2002 Suburban makes loud plane-like sound

SOURCE: abs brakes making noise.

Well the abs light reads wheel speed sensors located behind the rotors you will see a little wheel with notchs in it and when reads as if the wheel is locked up it will activate the abs i would inspect those sensors for damage possible one got bent or has junk on it interfearing with the signal and take it back to the place that did the brake job hope this helps

SOURCE: Brake Pedal goes to the floor in my 1990 Chevy C1500 Scottsdale

do you have a self bleeder kit? first off, you have to bleed the master cyl back into its self and the combination valve before you go to the wheels. when you do that, I think you will find that you have air in the lines. disconnect both brake lines from the master cyl and put the bleeder kit fittings on the master cyl, then put the rubber tubing with the kit on the fittings and submerge it in the brake reservoir. make sure its full. then pump the pedal until you get a hard pedal. if that is the case, reconnect the lines to the master, then have an assistant pump up the brake pedal with the engine off, and bleed the combination valve which should be connected to the master by steel tubing. pump it up, then hold it down, and crack the fittings loose, one at a time until the pedal goes about half way down, but do not release the brake pedal until the line is tight again, otherwise you will **** air in the lines. after you do all that, go to the farthest caliper or wheel cylynder from the master and bleed that with the same technique,and dont release the pedal until you close the bleeder screw. unless you have a major prob, this will work.

Jim Goldsmith

• 2005 Answers
• Posted on Apr 20, 2009

SOURCE: 2001 Chevrolet Cavalier front End Roar

You must replace wheel bearings in pairs to avoid loading the old bearing and, in time ruining your new bearing hub it is possible that you have already damaged the new hub

SOURCE: 1997 s10 2 wheel drive truck. 4.3L v6 makes a loud

Your noise sounds like it is power train related,If you have eliminated the engine,Since it doesn't make the noise while moving and in neutral.
It sounds like a universal joint in the drive shaft.Do you notice a vibration
along with the noise?

Jeffrey Turcotte

• 8991 Answers
• Posted on Oct 10, 2010

SOURCE: I hve a 96 chevy

you may have air trapped in the ABS EHCU. Did you use this procedure?

Bleeding the EHCU

Bleeding the EHCU requires the use of the TECH-1 scanner or its equivalent and the appropriate cartridge. Additionally, 3 tools, J-39177 or equivalent, are required. Bleeding cannot be performed without this equipment.
The EHCU must be bled after replacement or if air is trapped within the unit. It must be bled after bleeding the master cylinder and before bleeding the individual wheel circuits.
The Internal Bleed Valves on either side of the unit must be opened 1 / 4 - 1 / 2 turn before bleeding begins. These valves open internal passages within the unit. Actual bleeding is performed at the two bleeders on the front of the EHCU module. The bleeders must not be opened when the system is not pressurized. The ignition switch must be OFF or false trouble codes may be set.

1. Open the internal bleed valve 1 / 4 - 1 / 2 turn each.
2. Install one tool J-39177 on the left bleed stem of the EHCU. Install one tool on the right bleed stem and install the third tool on the combination valve.
3. Inspect the fluid level in the master cylinder, filling if needed.
4. Slowly depress the brake pedal and hold it down.
5. Open the left bleeder on the front of the unit. Allow fluid to flow until no air is seen or until the brake pedal bottoms.
6. Close the left bleeder, then slowly release the pedal. Wait 15 seconds.
7. Repeat Steps 4, 5 and 6, including the 15 second wait, until no air is seen in the fluid.
8. Tighten the left internal bleed valve to 5 ft. lbs. (7 Nm).
9. Repeat Steps 3-7 at the right bleeder on the front of the unit.
10. When bleeding of the right port is complete, tighten the right internal bleed valve to 5 ft. lbs. (7 Nm).
11. Remove the 3 special tools.
12. Check the master cylinder fluid level, refilling as necessary.
13. Bleed the individual brake circuits at each wheel.
14. Switch the ignition ON . Use the hand scanner to perform 3 function tests on the system.
15. Carefully test drive the vehicle at moderate speeds; check for proper pedal feel and brake operation. If any problem is noted in feel or function, repeat the entire bleeding procedure.