Johnny Lee Summerville, 60, a Cedartown auto salvage yard owner, was indicted in connection with the car theft ring in May.
Summerville pleaded guilty on Thursday to knowingly owning and operating a chop shop and to possessing the drug dihydrocodeinoze with the intent to sell.
He will be sentenced on Feb. 18, 2011.
According to the May 2010 indictment:
Summerville operated the chop shop between January 2001 and Oct. 6, 2009.
Officials said Summerville removed the vehicle identification numbers on at least three vehicles and also possessed a stolen Caterpillar tractor.
Summerville could face a maximum sentence of 15 years in prison and a fine of up to $250,000. Summerville will remain on bond until he is sentenced.
Other suspects include: