ABS Brakes

Does anyone know how to change the wheel sensor for ABS brakes, on a 1999 Pontiac Grand Prix GT?



Thanks.



Jeff

Jeff Bulach wrote:

> Does anyone know how to change the wheel sensor for ABS brakes, on a
> 1999 Pontiac Grand Prix GT?

Both the front and rear speed sensors are integral with the wheel bearing
and hub assembly. So the basic procedure would be to: remove the brake
caliper and rotor, (for the front) remove the large axle shaft nut, remove
the
three bolts that secure the wheel bearing and hub to knuckle, unplug the
sensor wiring, remove the wheel bearing and hub from the knuckle and axle.
Same procedure for the rear, other then the fact that there is no axle going
thru the rear wheel bearing and hub assembly.

Ian

Thanks Ian,

I think the fuse will be pulled or the ABS bulb will come out. That's to
much trouble to fix.

Thanks again.

Jeff


"shiden_kai" <violet_lightening_modified@hotmail.com> wrote in message
news:_ptld.213806$nl.44559@pd7tw3no...
Jeff Bulach wrote:

> Does anyone know how to change the wheel sensor for ABS brakes, on a
> 1999 Pontiac Grand Prix GT?

Both the front and rear speed sensors are integral with the wheel bearing
and hub assembly. So the basic procedure would be to: remove the brake
caliper and rotor, (for the front) remove the large axle shaft nut, remove
the
three bolts that secure the wheel bearing and hub to knuckle, unplug the
sensor wiring, remove the wheel bearing and hub from the knuckle and axle.
Same procedure for the rear, other then the fact that there is no axle going
thru the rear wheel bearing and hub assembly.

Ian

Have you properly had or performed the correct diagnosis to ensure the
problem is definitely with the wheel speed sensor? For safety reasons, I
would highly recommend not ignoring the problem by pulling fuses or removing
warning lights. Under the right circumstances, you might just find yourself
without brakes at all when you need them most.

Roger

"Jeff Bulach" <bulach9005@rogers.com> wrote in message
news:tOadnTafsYOYEwvcRVn-3g@rogers.com...
> Thanks Ian,
>
> I think the fuse will be pulled or the ABS bulb will come out. That's to
> much trouble to fix.
>
> Thanks again.
>
> Jeff
>
>
> "shiden_kai" <violet_lightening_modified@hotmail.com> wrote in message
> news:_ptld.213806$nl.44559@pd7tw3no...
> Jeff Bulach wrote:
>
>> Does anyone know how to change the wheel sensor for ABS brakes, on a
>> 1999 Pontiac Grand Prix GT?
>
> Both the front and rear speed sensors are integral with the wheel bearing
> and hub assembly. So the basic procedure would be to: remove the brake
> caliper and rotor, (for the front) remove the large axle shaft nut, remove
> the
> three bolts that secure the wheel bearing and hub to knuckle, unplug the
> sensor wiring, remove the wheel bearing and hub from the knuckle and axle.
> Same procedure for the rear, other then the fact that there is no axle
> going
> thru the rear wheel bearing and hub assembly.
>
> Ian
>
>
>

"shiden_kai" <violet_lightening_modified@hotmail.com> wrote in message
news:_ptld.213806$nl.44559@pd7tw3no...
> Jeff Bulach wrote:
>
>> Does anyone know how to change the wheel sensor for ABS brakes, on a
>> 1999 Pontiac Grand Prix GT?
>
> Both the front and rear speed sensors are integral with the wheel bearing
> and hub assembly. So the basic procedure would be to: remove the brake
> caliper and rotor, (for the front) remove the large axle shaft nut, remove
> the
> three bolts that secure the wheel bearing and hub to knuckle, unplug the
> sensor wiring, remove the wheel bearing and hub from the knuckle and axle.
> Same procedure for the rear, other then the fact that there is no axle
> going
> thru the rear wheel bearing and hub assembly.
>
> Ian

Ian, thats exactly what they replaced on my Montana 2002. The front l/s hub
!!! man oh man, thank God that was on warranty. what they were thinking....
is there a way for a mechanic a home to open the housing ( pressing off the
brg) and fixing the probe gear or probe wire ?

I will not likely spend money on ABS if I really can avoid it. Can you
damage something if you just decide to ignore the stupid light ?

Thank God I am still on warranty, the lower intake 2 weeks ago, and the Hub
this week !!!

They replaced the LH hub on my '04 Montana last week...cause the ABS
light was coming on....something about a connector breaking, but the ABS
light is coming on again....maybe they'll do the other side this time..




richard garneau wrote:
> "shiden_kai" <violet_lightening_modified@hotmail.com> wrote in message
> news:_ptld.213806$nl.44559@pd7tw3no...
>
>>Jeff Bulach wrote:
>>
>>
>>>Does anyone know how to change the wheel sensor for ABS brakes, on a
>>>1999 Pontiac Grand Prix GT?
>>
>>Both the front and rear speed sensors are integral with the wheel bearing
>>and hub assembly. So the basic procedure would be to: remove the brake
>>caliper and rotor, (for the front) remove the large axle shaft nut, remove
>>the
>>three bolts that secure the wheel bearing and hub to knuckle, unplug the
>>sensor wiring, remove the wheel bearing and hub from the knuckle and axle.
>>Same procedure for the rear, other then the fact that there is no axle
>>going
>>thru the rear wheel bearing and hub assembly.
>>
>>Ian
>
>
> Ian, thats exactly what they replaced on my Montana 2002. The front l/s hub
> !!! man oh man, thank God that was on warranty. what they were thinking....
> is there a way for a mechanic a home to open the housing ( pressing off the
> brg) and fixing the probe gear or probe wire ?
>
> I will not likely spend money on ABS if I really can avoid it. Can you
> damage something if you just decide to ignore the stupid light ?
>
> Thank God I am still on warranty, the lower intake 2 weeks ago, and the Hub
> this week !!!
>
>

richard garneau wrote:

> Ian, thats exactly what they replaced on my Montana 2002. The front
> l/s hub !!! man oh man, thank God that was on warranty. what they
> were thinking.... is there a way for a mechanic a home to open the
> housing ( pressing off the brg) and fixing the probe gear or probe
> wire ?

I suppose a person could try, but we simply don't get into that
at all. (It's not our money, and all that). Front wheel bearing
and hub replacements on the U-vans are very common. Either
ABS problems, or noise problems. I just did one on a Trailblazer
last week, the bearing and hub cost over $1000 dollars canadian.
Fortunately, it was under warranty.

> I will not likely spend money on ABS if I really can avoid it. Can
> you damage something if you just decide to ignore the stupid light ?

No, not really. Most of the newer systems really do simply default
to the base hydraulic brakes. There is very little chance that anything
in the modulator valve will screw up and affect the base brakes. There
were some older model ABS systems that were quite integrated, in
other words, the brake assist was also supplied by the abs system,
and then there were some models that use electric motors and gear
systems to move the valves, these could get stuck in bad positions
and cause problems. But the newer systems seem to be fairly
foolproof when there is a "detected" ABS problem.

Ian