Absolutely. At the time i bought, there were no additional incentives offered if you used GM financing.. The offer at the time was 18% off sticker on dealer stock. It didn't matter how you paid for it.
You can get a great rate, incentives and all discounts and rebates, but they're all negated if they pork you on your trade. They tried to screw me on my trade of a 2008 Tacoma.. KBB/NADA trade was $8000 - $9000 , they offered me $3000... After I got up out of my chair 2 or 3 times, I got my $8500..