I went cycling one evening and attempted a very steep incline climb and once I completed the climb, I noticed that my left pedal has begun to click/creak on each revolution. The pedals are a Canondale stock set, so I'm not sure if it's a quality, fitting or durability issue. I've only had my bike for about 2 months now and I'm really sure what to do. I would like to attempt to fix the issue myself, if possible. However I have no experience rectifying bike issues.

Would it be advisable to replace the pedals for a more durable set or attempt to fix the issue. I'll be attempting more incline climbs in the future, so I need pedals which are durable.

Any advice is welcome. Thanks guys