Antilock brake problem

jiminpa · 10-20-2008, 12:11 PM

my 2000 sierra 4x4 is having a problem with the antilocks,they engage at low speed.took out the garage door yesterday!! does anyone know where the sensers are on the axle? i hear thay need cleaned to remidity this.

ukrkoz · 10-20-2008, 08:15 PM

inside the hub. trace 2 wires down. yes, they do corrode, some clean them succesfully.

i ain't following you. if your brakes engaged, how did you take the door out? usually, it's when they DON'T engage.

jiminpa · 10-22-2008, 07:58 AM

the anti locks hit at low speed they"pulse".it takes twice as long to stop.its a scary experience,trust me!!

cburcham73 · 10-22-2008, 09:08 AM

the abs sensor is on the hub assembly.it gets wet,dirty and grimmy.if your going as far as to take them off to inspect them,just replace them.

mudseeker · 10-22-2008, 09:40 AM

most of the wheel speed sensors are sealed in the hub assembly. the only thing you can do is pray that the connection between the frame and the hub is at fault because replacing hubs is not cheap.

i'll see if i can find a TSB on the problem.

edit:call the dealer and give them this number and see what they can do for you, good luck!
05068C

jiminpa · 11-02-2008, 06:51 PM

got ahold of a service manager who knows something.these are on the front hub and get dirty.pull them out and clean them should fix the problem.he also stated that pulling the 60 amp fuse (under the hood) for the abs will disconnect the system and you will have regular brakes,but no abs.it will also light up the dash warning lights for abs and brakes. good thing to know!!

bigz · 11-02-2008, 07:23 PM

check wheel berrings if they going out the vibration will make the abs sensor activate

10-20-2008, 12:11 PM	#1
jiminpa Full Member Join Date: Jun 2007 Location: mercer co,pa Posts: 13	Antilock brake problem my 2000 sierra 4x4 is having a problem with the antilocks,they engage at low speed.took out the garage door yesterday!! does anyone know where the sensers are on the axle? i hear thay need cleaned to remidity this. __________________ 2000 gmc sierra slt 5.3l v8 extended cab 6'box

10-22-2008, 07:58 AM	#3
jiminpa Full Member Join Date: Jun 2007 Location: mercer co,pa Posts: 13	the anti locks hit at low speed they"pulse".it takes twice as long to stop.its a scary experience,trust me!! __________________ 2000 gmc sierra slt 5.3l v8 extended cab 6'box

11-02-2008, 06:51 PM	#6
jiminpa Full Member Join Date: Jun 2007 Location: mercer co,pa Posts: 13	got ahold of a service manager who knows something.these are on the front hub and get dirty.pull them out and clean them should fix the problem.he also stated that pulling the 60 amp fuse (under the hood) for the abs will disconnect the system and you will have regular brakes,but no abs.it will also light up the dash warning lights for abs and brakes. good thing to know!! __________________ 2000 gmc sierra slt 5.3l v8 extended cab 6'box

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10-20-2008, 08:15 PM	#2
ukrkoz Senior Member Join Date: Feb 2008 Posts: 172	inside the hub. trace 2 wires down. yes, they do corrode, some clean them succesfully. i ain't following you. if your brakes engaged, how did you take the door out? usually, it's when they DON'T engage.

10-22-2008, 09:08 AM	#4
cburcham73 Senior Member Join Date: Aug 2008 Location: williamsburg virginia Posts: 183	the abs sensor is on the hub assembly.it gets wet,dirty and grimmy.if your going as far as to take them off to inspect them,just replace them.

10-22-2008, 09:40 AM	#5
mudseeker Senior Moderator Join Date: Feb 2006 Location: michigan Posts: 6,375	most of the wheel speed sensors are sealed in the hub assembly. the only thing you can do is pray that the connection between the frame and the hub is at fault because replacing hubs is not cheap. i'll see if i can find a TSB on the problem. edit:call the dealer and give them this number and see what they can do for you, good luck! 05068C

11-02-2008, 07:23 PM	#7
bigz Banned Join Date: Oct 2008 Posts: 462	check wheel berrings if they going out the vibration will make the abs sensor activate