Question: What is the procedure to replace an automatic transmission ECM? A . B . Disconnect the batteries, remove old module, install new module, reconnect batteries,

What is the procedure to replace an automatic transmission ECM?
A.
B.
Disconnect the batteries, remove old module, install new module, reconnect batteries, program new module, then road test to verify
functionality.
Disconnect the batteries, remove old module, install new module, program new module, reconnect batteries, then road test to verify functionality.
Tum the key ON, remove old module, install new module, program new module, then road test to verify functionality.
Tum the key OFF, remove old module, install new module, program new module, then road test to verify functionality.

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