NTBO, This topic has been asked several times previously. To save lots of repeated information have a look through the existing posts on the following link.
Make sure that you read the data in respect of Series 1 and not Series 2.
www.chevroletownersclub.co.uk
The Forum Search function is a useful facility. How to use the Forum has helpful info on the following link :-
Hi Forum Member, It is possible that you are new to the Chevrolet Forum and ended up here either by chance or a post has referred you here. Either way you are Welcome. As a new member (or even an older member) who is unfamiliar with the layout I've compiled some helpful tips below. Explore...
www.chevroletownersclub.co.uk
Main considerations are :-
Full Service history (no gaps). All Service receipts. All Repair receipts. MOT advisories. If necessary get the AA/RAC to undertake a vehicle inspection.
If it is a dealer selling, check what the sales warranty covers and for how long.