First, it's worth asking when you get to LAX on your departure date if AF/KLM (which are the same company) will "check through" your bags to Amsterdam, i.e. issue you bag tags with "AMS" on them and transfer them in Paris for you.
Assuming they will not do that, i.e. your bags are checked only to CDG and you have to check them in again in Paris, this is the process you will have to follow. I am assuming your onward flight on KLM is to Amsterdam, because as far as I know the only place KLM flies to from CDG is Amsterdam.
- Land in CDG.
- Proceed to Schengen passport control -- note that because you need to get checked bags, you need to not follow the "Correspondances/Flight Connections" signs once you land in Paris and instead need to follow the "Bagages - Sortie / Baggage - Exit" signs. If you follow the "Flight Connections" signs you will go through the necessary checks but won't get to baggage claim, which will be a problem for you.
- Pick up your bags at the baggage carousel and exit through customs.
- Proceed to terminal 2F.
- Re-check your bags at the KLM check-in desk and get the CDG-AMS boarding passes, if necessary.
- Clear security and enter the airside area.
If your bags are checked through to Amsterdam (i.e. they have AMS on the bag tags) then once you land in Paris, you can follow the "Correspondances / Flight Connections" sign. You will still go through passport control and security check (passport control because you're entering the Schengen area in Paris, security because CDG requires non-Schengen arrivals to go through security re-screening before connecting flights) but you don't need to transfer your bags yourself.