Hummer H2 no crank no start issue with P0606 and U0107 codes after engine shutdown from water spray on Hummer H2

Some Hummer H2 owners report experiencing no crank no start issues, often accompanied by P0606 and U0107 codes, particularly after engine shutdown due to water spray. These problems can stem from a weak battery, which may result in a clicking noise and failure to crank, or from corrosion on battery terminals that contribute to starting difficulties. Additionally, poor starter electrical connections and bad ground connections can hinder the starting system, while a faulty starter motor may prevent the vehicle from cranking altogether. The P0606 code typically indicates a fault in the Engine Control Module (ECM) or Powertrain Control Module (PCM), while the U0107 code suggests a loss of communication with the Throttle Actuator Control Module. Water intrusion into sensitive components like the ECM or PCM after exposure can exacerbate these issues, triggering the aforementioned error codes. Owners are advised to conduct thorough diagnostics, addressing common starting issues and specific error codes to identify and resolve the underlying causes effectively.