If you're shopping for an engine control module for your Dodge, Jeep, Ford, or some other make and model, then you've probably come across something called a "core deposit" or a "core charge." You may have found a great deal on an ECM but this core fee is turning you off - what is it?...The post What's a Core Charge / Deposit When Buying an ECM? appeared first on CarComputerExchange.com.