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Chevy Forum: U0101 u0073 u0100 chevy aveo?
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  #1  
Old 08-03-2014, 09:52 AM
feather12comp feather12comp is offline
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Default U0101 u0073 u0100 chevy aveo?

I noticed the above codes after changing my throttle body. I reseated the connector, but no changes. Physical inspection of wiring does not reveal anything. Any suggestions on what to check?
U0101
- Faulty Transmission Control Module (TCM)
- TCM harness is open or shorted
- TCM circuit poor electrical connection
U0100
- Faulty Engine Control Module (ECM)
- ECM harness is open or shorted
- ECM circuit poor electrical connection

U0073
Control Module Communication Bus OFF
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  #2  
Old 08-03-2014, 07:48 PM
zora zora is offline
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Posts: 3,193
Default Re: U0101 u0073 u0100 chevy aveo?

you used a new or used throttle body? You didnt fail to reconnect anything or accidentally disconnected something?
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