Hi Gerry!
I've had a Suzuki Forenza for about 4 years now (I bought it new at the end of 2005, but it was a 2006 model), and I have not had any problems with it at all besides regular maintenance. It came with free oil changes and inspections for life as well as a 7 year, 100,000 mile full (bumper to bumper) warranty. It was less than $10K too (came to a bit over after taxes of course), so it was a great investment for me. It drives well, although the tires that came on the car were horrible in the rain!!! I did have to get new tires because of that, but now it's fine in bad weather. But this one is reliable and I have to say I love it because of that! The body of the car is still in great condition, but my hubby keeps it nice with washes and waxes. It runs smooth and is roomy & comfy!
I know you asked about the Grand Vitara, but I figured I'd let you know my experience with Suzuki in general.
Hope this helps and good luck!