What do Trouble codes mean U0101 P2128 and P2122 on a 05 Chevy Cobalt?

The trouble code U0101 indicates a loss of communication with the transmission control module (TCM), which may result from wiring issues, a faulty TCM, or problems with the engine control module (ECM). The P2128 code refers to a throttle position sensor (TPS) issue, specifically indicating a high voltage reading, while P2122 suggests a low voltage reading from the TPS. Together, these codes may point to problems with the throttle position sensor, wiring, or connections that could affect engine performance and drivability. It's advisable to inspect the wiring and connectors and potentially test or replace the throttle position sensor to resolve these issues.