"Scheduled maintenance" is normally the responsibility of the owner and includes such normally consumable items as engine oil, filters, brakes, tires, air filters, spark plugs, etc. The maintenance you asked about is noted in the rear sections of your owner's manual - a simple call to your local GM dealer can get a ballpark price question - as always, worn parts or damage uncovered during "normal maintenance" may or may not be covered by a vehicle warranty. If you document it, scheduled maintenance may be performed by a local shop without affecting a warranty - but keep your receipts and paperwork - GM can get snitsy if you go to them later with problems. If you are a regular GM customer, the amount of e-mail and post card "specials" and "discounts" you receive will keep you busy each week. (I am NOT a GM rep or dealer - I'm a GM owner)
The CCC reps will chime in here also.
