Max Hollobone, Max Dias Mesquita and sub Mufaro Taima Huchu scored to see off the Anvils. Alexander Rainford and Oli Leslie replied for CDG.
The Tye host play-off chasing Haywards Heath Town in their final league game on Saturday, while CDG – who are ninth – round off their campaign at home to Eastbourne Town.
See pictures from the Peacehaven-CDG game on this page and the ones linked.
13. Peacehaven and Telscombe v Crawley Down Gatwick pictures by Paul Trunfull (16).jpg
Action from Peacehaven and Telscombe v Crawley Down Gatwick Photo: Paul Trunfull
14. Peacehaven and Telscombe v Crawley Down Gatwick pictures by Paul Trunfull (11).jpg
Action from Peacehaven and Telscombe v Crawley Down Gatwick Photo: Paul Trunfull
15. Peacehaven and Telscombe v Crawley Down Gatwick pictures by Paul Trunfull (9).jpg
Action from Peacehaven and Telscombe v Crawley Down Gatwick Photo: Paul Trunfull
16. Peacehaven and Telscombe v Crawley Down Gatwick pictures by Paul Trunfull (20).jpg
Action from Peacehaven and Telscombe v Crawley Down Gatwick Photo: Paul Trunfull
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