Help with BCE0019: 'enabled' is not a member of 'UnityEngine.Component'

Hi guys, I'm a total newbie to coding and would appreciate some help please. I've been following a tutorial for a countdown which will disable car movement until the count finishes.

Here is the full script for the countdown.

 var guiCountDown : GUIText;
 var countMax : int;
 private var countDown : int;
 
 function Start(){
 
     guiCountDown.enabled=true;
     GameStart();
 }
 
 function GameStart(){
     var car = gameObject.Find("PlayerCar 1");
     var drivingScript = car.GetComponent("PlayerCar");
     drivingScript.enabled=false;
     
 
     
     for (countDown = countMax; countDown>-1;countDown--){
         if(countDown == 0) {
         guiCountDown.text = "GO!";
         } 
         else
         guiCountDown.text = countDown.ToString();
         yield WaitForSeconds(1);
     }
 
     
     guiCountDown.enabled=false;
     drivingScript.enabled=true;
   
 }

I get the error: BCE0019: 'enabled' is not a member of 'UnityEngine.Component'. (14,23)/ (29,23)
Any ideas where I have gone wrong?