Yep. Buying the RIGHT vehicle for you too. You'll have no probs finding reasonable parts and reasonable mechanics that can work on those Chevy's.
I bought a 2000 VW diesel Jetta used in 2003. The dealer wanted $13,500, I talked him down to $10k by complaining about the 75k miles on it.
I put another 225k on it, getting 50mpg, over the next 6 years and it broke last summer at 300k. Not recommending anyone buy a VW unless they know how to work on them because the dealers and parts and mechanics are generally $$$$, but getting 50mpg for 6 years was great.
Another saving tip - if you still think you're being nice to your car by changing the oil every 3k, think again! You are probably just throwing money away, most mfr's recommend 7500-10k oil change intervals now.
Same for super unleaded, unless you drive a turbo it's probably a waste of $ - again, check the specs on your car to see what's the lowest acceptable grade.