Here are your kit numbers for the 2008 Chevy Aveo:

Harness numbers:

Metra Electronics Corp. 70-8405
DAEWOO 2000-UP - INTO CAR

Metra Electronics Corp. 71-8405
DAEWOO TO OEM RADIO

Metra Electronics Corp. 72-9300
SPEAKER HARNESS


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Radio Kit:

Metra Electronics Corp. 95-7951
FORENZA/VERONA/AVEO DDIN 04-06


I hope this helps, if you have any questions feel free to ask....