Question about 1999 Chevrolet Silverado 1500

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I just replaced my front rotors, pads, and calipers on a 98 olds achieva. After doing this I bled the the front brakes but am now experiencing a very soft pedal. I am wondering if something else could be wrong or if I didn't bleed the brakes enough(I did it about 10 times each on both sides)

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  • Chevrolet Master
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New pads will give you a softer stop. If you have doubts about air in the system, Gravity bleed. No pedal pumping. Make sure the master cylinder is full, leave cap loff. Do rigt front first. Open bleeder slightly and watch. Let drip until bubbles stop and fluid is steadyclose bleeder. Check m/c and toop off. Then repeat process on left wheel. If you bleed all four, start at the right rear, then left rear, right frt, left front. Keep the master cylinder full or you'll get air back in the system. When done, top off and cap M/Cylinder. Tap your brake lines while bleeding to shake any clinging air bubbles.in the line. -- good luck.-Ned One last thing. Make sure you haven't shifted the proportioning valve. After everything is buttoned up, tap the rear drum with a wrench then have someone apply the brake and tap drum again. First taps will ring and second taps will sound solid. Rear brakes working if both thud. you can do the same with front. tap the rotors.- if it all cks out good road test using caution until all is confirmed. Break in new parts with light stops, no hard or high speed stops if avoidable.

Posted on Jun 19, 2009

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  • Master
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Because of the ABS system if you press the brake pedal with too much pressure then it will give you the illusion of a soft pedal. Does it feel like a soft pedal when the vehical is in motion and you then press on the brake pedal (normal)? The other thing is if your pads and/or caliper were frozen, when you changed them out. The brakes are not going to feel or brake exactly the same, after the repair. But you are there, if the pedal is real low or goes to the floor then there is still air in the system or for some reason, your master cylinder is defective.

Posted on Jun 18, 2009

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1 Answer

All new brake shoes on 97 jeep front callibers still sticking


The problem lays with the Caliper itself and/or the brake hose connected to the Caliper.
However if you replaced the pads, did you also replace the Rotors or have them Turned? The old pads wear the rotor. New pads on old rotors that have not been replaced or turned may end with rubbing or stuck brakes.
A simple way to test whether it's one and/or the other:
1. Remove the Caliper from the rotor, remove the pads. Keep for now the caliper attached to the brake hose.
2. Very slowly push on the brake, exposing more of the piston out of the bore. Not all the way. Usually until the rubber dust seal/boot is fully extended.
3. Check the seal/boot for cracks and tears, and if clean or not. Bad seals may prevent the piston from re-seating.
4. Using a c-clamp and pushing straight in: Try repushing the Caliper Piston back into the Caliper Bore (the cup back into the hole). It should go back in realitively easy.
5. If it doesn't go back in easy: Again slowly pump the brake and re-push the pistons back out to full extended seal/boot (but not the piston out of the bore).
6. Detached the brake hose from the caliper.
7. Again using a c-clamp and pushing straight in: Try again to repush the caliper piston back into the bore without the hose attached. If it goes back-in relatively easy - the caliper is okay...it is the brake hose.
8. If the caliper piston does not go back in easily - Replace the caliper.
9. When Installing the new (reman) caliper, remember to bleed the brakes.
TRY EITHER OR #10 OR #11 BELOW:
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12. Replace the brake hose and try again.

Another method but more expensive:
OR Replace the calipers, brake hoses; bleed and test!

If this helped or not; or if you need additional help or have addtional questions let me know on fixya.com!

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1 Answer

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You may have a leak in the booster or master cylinder. You can put a pressure tester on the system to test for leaks. It does sound like you have an air leak.
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1 Answer

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1 Answer

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