I get this randomly on my 2006 Impala LS. Usually goes away the next time I start it. Check engine light stays on though. I cleared the codes and the last time it lasted 2 weeks before it did it again. I was backing straight out of garage the last time it happened. I get the following 3 codes almost every time.

P2138 - Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation
U0184:00 - Lost communication with the Radio
C0242:71 Engine Control Module (ECM) Indicated TCS Malfunction Invalid Serial Data Received

This has been going on a while but it is getting worse.
I did replace the gas pedal and the complete throttle body last year.

Any idea what might be the cause??

Thanks in advance

 

Why did you do that? i reckon it was suggested but was it the dealer that suggested it? anyway I dont know what computer you use but you might find better readings with a better computer.

I remember that i got different responses ei one could read a error and an other couldnt read it. Might be a road to look into. Anyways good luck amigo and please share when/if you find a solution out there