My 2006 Malibu LTZ has 25,600 miles of easy driving. Dealer wants to perform an ''air/fuel induction service''. Is this necessary at barely 30,000 miles. Car runs very well -- I have had no problems. Owner's guide is very difficult to understand. Thanks, S.Kaiser

 PREVENTATIVE maintenance is to assure a smooth running, efficient low cost car.   
Now on the subject of using regular all the time, you do not want a buildup of carbon in your intake manifold(the lungs of the engine) so as not to "clog" or damage the emmission sensors and valves that can cost plenty to replace.
 A carbonized intake manifold could cause as much as $1000.00 worth of repairs to have to be done. So spending approx. $150.00 to do a fuel injector & induction service seems a less expensive alternative.
Also it would pay you in the long run to put in a tank of super every three or four tankfuls, with a can of fuel injector cleaner at that time. 
Remember, it is better to spend a little bit extra now than hundreds later. Now said, to replace 3 EGR sensors and valve, plus have to do an intake induction service on top of all that. So be smart, do your PM's regularly but i think just by running fuel injector cleaner every 1,500 miles would be fine. Take care and I hope this helps.

This might be just part of the maintenance schedule. depending on what the manufactures warrty states if there is a service is to be performed the schedule must be maintained in order for the warrenty to remain in effect. failure to comply will often times null and void a manuifactures warrenty and/or an extended warrenty. the service should be of no cost to you and better safe than to be sorry is always the way to go