antilock brake problem

[cooters]

My 02 Tahoe has developed an antilock brake problem. When you are braking lightly and almost stopped (5 mph) the anti lock brakes come on. I removed the wheel sensors, checked codes but no luck. Any suggestions??????

[droppedgmc]

my 2000 sierra has done that a couple of times, until i recalibrated for different tire sizes. do you have after market wheels? tires? other than stock size?

[cooters]

tires and rims are stock. Problem is getting worse and worse, now it does it every time

[droppedgmc]

hhmmm..sounds like maybe the anti lock unit. have the code checked

[cooters]

no codes, even checked the speed of each sensor while driving, still no luck.

[67ChevyRedneck]

GM had an ABS sensor recall here in the US on the 99-02 trucks. Not sure if the Tahoe was included, but it would make sense because they share parts. Anyway, road salt corrodes the sensor and causes them to fail over time. My truck did the same thing, but was replaced under the recall.

EDIT:
Here we go... here's an article on exactly what you describe.
It says the recall was only for the states though.

http://www.consumeraffairs.com/recal...05/gm_abs.html

A GM spokesman says the problem occurs when salt and other road grime gets into the area covering the antilock braking system sensor near the wheel hub. The problem activates the ABS at speeds much lower than normal, requiring a longer stopping distance.

[cooters]

thanx for the info, even after removing and cleaning the sensors, the problem still exists. Next step replace the sensors

[dbcox]

I never got a recall notice on the abs module. one needs to be done. All ive heard of trouble on is th 1999. i just changed mine out but i got the module of a 2001 swapped modules not the whole abs unit. A 2004 module will not work on 1999 - 2003 (Ask me how I know) They are listed 1999 - 2005 or six i cant remember but if you swap modules it has to be 2003 and down try not to get another 1999 if you can help it. I got the module for $75 saving alot of money. Gm should do a recall. You can also go to absfixer.com he will rebuild your unit and overnight it back i cant remember like 100 or 150 dollars. Still cheaper than having to deal with the Stealership.

[dbcox]

Oh by the way my abs pump just kept running continuously until i pulled a fuse

[ChevyTech]

Clean the area where the sensor mounts. The rust under the sensor changes the sensor position.


Recall 05068
Anti lock brakes

Make / Models : Model/Build Years:
CHEVROLET / AVALANCHE 2002
CHEVROLET / SILVERADO 1999-2002
CHEVROLET / SUBURBAN 2000-2002
CHEVROLET / TAHOE 2000-2002
GMC / SIERRA 1999-2002
GMC / YUKON 2000-2002
GMC / YUKON XL 2000-2002
Manufacturer : GENERAL MOTORS CORP.

NHTSA CAMPAIGN ID Number : 05V379000 Mfg's Report Date : AUG 29, 2005
Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK
Potential Number Of Units Affected : 1353718
Summary:
CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES MAY EXPERIENCE UNWANTED ANTILOCK BRAKE SYSTEM (ABS) ACTIVATION. THIS CONDITION IS MORE LIKELY TO OCCUR IN ENVIRONMENTALLY CORROSIVE AREAS. THIS RECALL WILL BE LAUNCHED IN THE "SALT BELT" STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MARYLAND, MASSACHUSETTS, MAINE, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN AND THE DISTRICT OF COLUMBIA ONLY.
Consequence:
THIS CAN CAUSE INCREASED STOPPING DISTANCES DURING LOW-SPEED BRAKE APPLICATIONS, WHICH COULD RESULT IN A CRASH.
Remedy:
DEALERS ARE TO REMOVE THE WHEEL SPEED SENSOR AND THOROUGHLY CLEAN THE WHEEL SPEED SENSOR MOUNTING SURFACE ON THE BEARING, APPLY RUST INHIBITOR TO THE CLEANED SURFACE, GREASE THE MOUNTING SURFACE, REINSTALL THE WHEEL SPEED SENSOR, AND CHECK THE PEAK-TO-PEAK OUTPUT VOLTAGE TO ENSURE THE WHEEL SPEED SIGNAL IS WITHIN SPECIFICATIONS. THE RECALL BEGAN SEPTEMBER 22, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 OR GMC AT 1-866-996-9463.
Notes:
GM RECALL NO. 05068. GM REVISED THE INVOLVED VEHICLES BY AMENDING THE ORIGINAL 573 REPORT ON OCTOBER 4, 2005. GM REVISED THE ORIGINAL 573 REPORT ON DECEMBER 16, 2005, TO INCLUDE ADDITIONAL STATES AND VEHICLE POPULATION. CUSTOMERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO HTTP://WWW.SAFERCAR.GOV



Source:
http://www-odi.nhtsa.dot.gov/cars/pr...0&summary=true

[67ChevyRedneck]

My truck was recalled because it spent most of it's life in Indiana, I bought it from carmax and had it transferred to SC.

[Huck]

I had the recall performed on both my 2000 silverado and my 2000 tahoe. Probably need it on my 2002 silverado as well.
Mine is also giving me fits when you go over 70mph. Had wheels/tires balanced but---put on 17" and may need recalbrating????

[WLPTMP]

the recall is open in canada also just a different number and its been around a lot longer

[h8menow]

i know there is a reflash that needs to be done, cuz the ebcm thinks the truck is in a out of control situation. have the dealer check for trouble codes in current and history. i've worked on a yukon that was doing this. have them check that it has the most currect program