My allwheel does not work on icy roads above 40 mph

did you check your tires then check your tierod ends and let me know what happens

Replace rear shock absorbers.
Their function is to maintain contact between tires and floor. When they are worn the wheels spend too much time in the air without any traction.

Are you check the Owners Manual ? This warning actually spells ICY... and it is an automatic indicator to warn of ICY roads and weather conditions.

The word ICY means that temperatures outside are near or below freezing. Its a warning for possible icy conditions on the road. Its a feature that comes with your trip computer along with the temperature gauge.


Hope this helps.

Replace the wheel bearings

Do you have a tow hitch on your truck? Does it rattle when driving on bumpy roads? I had a truck same year and make when on a certain road the timing would ****** problem traced to knock sensor.

the abs warning light also works with the electronic traction control, (or traction control,same system,different names) and when icy, stops the wheels from spinning,above about 15 mph.(the abs dont work under 5mph) so if im right regarding your question,your car is doing what its supposed to,stopping the driving wheels from spinning/locking up.the warning light comes on when one or the other is doing its job.(working).the trick is to drive so that the warning light doesnt come on..... boring.

Choose 2nd that way the car will not coast to fast and it will also slow it down when your stopping but if its ice throw it into reverse so it will help stop

No problem as it will only cut in above approx. 1500rpm and is exactly that, an overdrive.

the role of the Electronic Control System is to avoid wheel spinning on icy or 'snowed' surfaces. When the system that one wheel having traction is spinning faster than the others than it will apply brake to that particular wheel to help it to recover its traction.
In the reality, the system is more active when you are accelerating after a stop on icy surface. Once the vehicule got its speed the system should be less active .
Globally, this system should help to keep the traction at its best under any condition.
However, my personnal experience is that you could have to desactivate the system if you are driving in heavy snow condition. Under these particular conditions, the system could apply brakes to a point/frequency that your vehicule will run as a turtle.

In conclusion, there is nothing bad if you let the system manage by itself, unless you don't like the feeling or unless the system generates more problems than benefits.
Hope I have ansered your questionning.
Dan

well your tranny is slipping check your tranny fluid make sure its not low on fluid