Does replacing the factory speakers, and deck void the warranty?

Our local dealership is extremely lenient about the warrantee. Unless you've been "racing." Heheheh...or so he says. I know at ours, it would not void the warantee. Call the customer service phone number in your manual and get a yea or nay from them. That should be good enough.

If you purchased the car brand new, everything is under warranty. If it is a used car, the stereo/speakers are not covered.

for 3 years or 36,000 miles - stereo - see owners manual RTFM