The fuse for the abs system is blown. Check under the driver side of dash for the fuse panel.
The most likely problem with the heater blower on your 2003 Sable is the blower resister. The resister can go bad and cause you to only have one speed.
that sounds like your transsion you should have it looked at although you can drive it with out reverse for quite a while
The resistor is right near the blower motor. On the passenger side, under the glovebox, remove the underdash cover and you will see it. It is just toward the driver side, held to the heater system by one screw. Its a 1/4" screw.... why not 7mm or 8mm I know not, but there it is., I usually just replace the 'heat fuse' with one from raido shack. That is likely what is wrong with yours too.
fuse, wiring, blower motor, blower motor switch, blower motor resistor
sequence signals are signals that are used to arrange events in proper order...! for example..the teacher is in a wrong grammar..!
blower resistor is bad
This car is an "OBD2" model, and requires a code reader or scan tool to access the information in any of the car's computers. Many auto parts stores will do this for you for free...just don't take their word for what's wrong.
could be a throtle positon sensor. This is a sensor that tells the computer how far down the throtle is being pushed.
If you have no blower speeds at all check the fuse, then check the blower motor switch and electrical plug for a melt down situation, then check the blower motor itself.
Check your blower motor relay!
The blower in my 2001 Honda Civic did not stop working.
This is the first time I have ever heard anyone state that neutral works fine...................as if not doing anything would go wrong. It's time for "The Transmission Doctor"