Possible ABS problem..

[99ta-hoe]

i did a quick search and i did not come across any post releated to this problem im having.

99 tahoe, 5.7, 168xxx miles.

the brake pedal is real spongy and idea how to fix that?

the biggest concern i have is that when im coming to a complete stop, just before i stop i hear the Anti Lock Brakes engauge and the pedal kicks back until ive completely stopped. the only time this occurs is when im coming to a complete stop and it engauges just before i come to a stop. the tires are not locking up nor are they loosing traction when coming to a stop. the check engine light is not on and the ABS light is not coming on when this problem occurs, nor is it on in general.

any ideas that may be causing this problem?? all suggestions are helpful.
thanks in advance...

 

[lesterl]

Bleed the he11 out of the brake lines, get a large bottle of new brake fluid and run it through, you have some air trapped in there, possibly a bubble in the ABS module.....

 

[Slammed]

Its the ABS sensor on the wheel there was a recall for certain tahoes the fix is to remove the sensor and clean and reinstall with antiseize to prevent it from rusting over again which causes the problem you are having I had the same problem and let it go for a year and it burned out my ABS control module thats $500

 

[Andrew99Tahoe]

Bleed the he11 out of the brake lines, get a large bottle of new brake fluid and run it through, you have some air trapped in there, possibly a bubble in the ABS module.....

I agree with this. TO FIX YOUR SPONGY PEDAL- Bleed your brake likes. First step, empty your fluid reservoir, whether its with a vacuum set up or even a turkey baster. Then put in new fluid. Dont forget to put the cap back on the reservoir. Then find a friend to help you do a gravity drain on the lines. Have someone pump the brakes and hold. After the pedal is held down the other person under the truck, you, loosing the zerg fitting on the caliper just for a second. Repeat this step a few times on each caliper/drum. Make sure to check the reservoir before moving on to the next wheel. And you may want to so this process a few times. Let us know if this helps.

 

[Slammed]

NO DONT BOTHER THATS NOT THE PROBLEM SEE HERE

http://www.consumeraffairs.com/automotive/gm_tahoe_brakes.html

http://www.consumeraffairs.com/recalls04/2005/gm_abs.html

 

[lesterl]

If he has 168k on a 99, wouldnt be a bad thing to bleed the brakes anyway.......

 

[Slammed]

If he has 168k on a 99, wouldnt be a bad thing to bleed the brakes anyway.......

Why it has nothing to do with it thats dumb

 

[lesterl]

May not have anything to do with his issue, it may, you dont know.

Brake fluid picks up moisture, dirt, and other contaminants over the years and miles and it is not a bad idea to replace it, you change your engine oil dont ya? Why would that be?

I would also inspect wheel cylinders and calipers for leakage along with the lines.....

 

[Andrew99Tahoe]

May not have anything to do with his issue, it may, you dont know.

Brake fluid picks up moisture, dirt, and other contaminants over the years and miles and it is not a bad idea to replace it, you change your engine oil dont ya? Why would that be?

I would also inspect wheel cylinders and calipers for leakage along with the lines.....

yeah I agree with this. It wouldnt be a bad thing to do anyway. Its a real easy job too. I did mine, with a friends help to pump to brakes, in MAYBE 30 minutes.