Chevrolet HHR no start or crank issue, relay 34 not functioning despite relay 51 clicking on Chevrolet HHR

Some Chevrolet HHR owners report experiencing no start or crank issues, particularly when relay 34 is not functioning despite relay 51 clicking. Commonly, a weak battery is noted as a potential cause, where there may be enough charge to activate the solenoid but insufficient power to start the engine. Additionally, a bad contact in the starter circuit relay can prevent the vehicle from cranking, leading to clicking sounds without engine turnover. Ignition system failures are also cited, as a lack of spark will stop the engine from starting. Fuel system concerns, such as inadequate fuel entering the combustion chamber, can result in a scenario where the HHR cranks but does not start. Other issues, like a faulty fuel pump or EVAP purge valve, may further complicate the situation. Owners are advised to check the battery condition, inspect the starter circuit relay, and investigate the clicking of relay 51 to troubleshoot these problems effectively. If these steps do not resolve the issue, consulting a mechanic for a thorough diagnosis is recommended.