Code Select 
if(strcmp(cmd,"!fix",true) == 0)
	{
		if(!IsPlayerInAnyVehicle(playerid))
        	{
           		SendClientMessage(playerid,COLOR_GREY,"You're not in a vehicle!");
           		else if ( (GetPlayerVehicleID(playerid) == 155) || ( GetPlayerVehicleID(playerid) == 177) ) SendClientMessage(playerid,COLOR_RED,"You cant fix this vehicle");
           		return 1;
  		 }
		else {
			SetVehicleTyre(GetPlayerVehicleID(playerid), 1);
			SetVehicleLights(GetPlayerVehicleID(playerid), 1);
			SetVehicleHealth(GetPlayerVehicleID(playerid),1000);
			SendClientMessage(playerid,COLOR_YELLOW,"Your car has been fixed!");
			return 1;
			}
	return 1;
	}
i think this might work ( im not sure about if its "else if" or "elseif" )

				

				
 Guys you can all download it from here :
 
 