Two different V6s were available that year, the 4.0 OHV (traditonal, cam in block style) and the 4.0 SOHC (overhead cam). You can easily tell by looking at the top of the engine. The OHV will say "EFI" on top, and the SOHC will say "SOHC." The SOHC is a higher HP engine.
If it is the SOHC, you will want to do a little searching here for 00M12 (someone correct me there if that is wrong), and make sure that it has been done to the engine.
'97s were also infamous for "blend door" problems. You can search that term also, but the main thing to look for is that the AC works in all positions (normal, max, defrost).
'97 was also known for the radio display going out, but if it is working, I wouldn't worry about it.
Are they good vehicles? Sure! Do they have small little problems just like every other make/model of vehicle? They sure do!
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