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I have a 1997 pontiac grand am se. my abs and ets lights are on and everytime i apply the breaks expetually in the rain or snow my back tires lock up and skid how do i fix this? i know it has something to do with the abs and ets i can turn the ets on so the light goes out but when i do my car wont go passed 30 miles and hr. thanks
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Visiually check the rear breaks and if it is not leaking you the need master cylinder replace. When replacing a master cylinder don't forget to bleed for trap air also.
If you are talking about the light coming on when you are driving in
slippery conditions, this is normal. If you are talking about it
staying on all the time, the ets is either turned off or you have
another problem. Let�s take a moment and explain why the electronic
traction control which is called Enhanced Traction System (ETS) warning
light will turn on when the engine computer sees a problem. The ETS
system monitors wheel speed via the Anti-lock Brake System (ABS). If
the ETS system sees a wheel spinning due to snow, ice, rain etc., the
ETS computer sends a request to the vehicle�s engine computer to reduce
torque. The engine computer responds with a combination of strategies.
In the engine computer�s bag of tricks to stop wheel spin it can
perform any one or combination of the following; cut fuel off by
trimming or turning off fuel injectors, ****** the spark timing or up
shift the transmission. In the days of old we just let up on the gas
pedal. Now the computer does it for you. If you have an engine running
problem it is more of a problem than you realize. The engine computer
is the high command center. The engine computer will work and respond
to information from the other computers in the vehicle. But in the
event there is a system or running problem that the engine computer is
responsible for, �it will� lock out all of the other vehicle computers.
If there is an engine running problem that causes the engine computer
to store a code and turn on the �Check Engine� light guess what
computer doesn't talk to the others? The engine computer. The ETS
computer gets all put out when this occurs and turns its warning light
on in protest. So, there you have it. If the check engine light is on
the ETS warning light will come on as well and the ETS system will not
operate until the engine computer problem is corrected.
ABS pump may be faulty. Quite common, that is the exact reason I always remove the fuse under the hood for all my ABS. on all cars. I don't trust them.
Sounds like your Anti lock brake valve is not functioning right. The bad thing is that it has to be serviced by a technician. When they lock up is there any lights on the dash that light up like something that says anti-lock?
the button on the side of the shifter is not for overdrive. it is your ets (enhanced traction system). it helps keep your wheels from locking up when braking in the rain or snow. btw, when the light is OFF, the ets is active.
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