Hey guys so I purchased a 2002 trek 2000 and I'm loving the bike but when I go up a big hill and try to shift in the the small ring the chain starts slipping when in the lowest gear any idea on adjusting the rear derailer?
When you say the chain is slipping what is slipping. Is the chain slipping on the cogs/jumping teeth. A bike of that age might have a stretched chain and worn gears. You might need some new components. If the chain is jumping back and forth between gears than cable adjustment or replacement is the likely cause.