High pressure direct injection fuel pump failure. Fuel pump was replaced with updated unit.
knock sensor replaced, still knocks
replaced high pressur fuel pump
Timing chain noisy. Fixed under warranty. Error knock sensor light came on.
An exhaust valve failed.. The dealer replaced under warranty
The plastic guide that keeps tension on the timing chain broke, so the vehicle was slipping out of time.
Faulty radiator thermostat
Replaced ignition switch. Problem caused service stabilitrak light to come on and cylinder misfire - car difficult to drive before problem
They had to clean out the key ignition because it would stick and not turn over at times to start the car.
High pressure fuel pump on engine and timing crank shaft replacement and repair.
Engine temp indicator did not work and dealer replaced thermostat, everything is fine after repair.
Had problems with transmission smoothness while decelerating (20-30MPH range). Chevrolet released a new transmission calibration at the end of September 2009 to correct this. Took vehicle to the dealer to have it flashed under warranty.
Check engine light came on, diagnosed problem with cam solenoid. Not covered under power train warranty. Also has intermittent loud knocks when starting. They could not find code but there is still something wrong. Was told early build 2.4
Still making bad noises when starting. Very loud rattle. Selling car as we are sure the motor will fail soon.
The motor was not the issue. Once it had been replaced, the intermittent problem still existed, so they dumped and reloaded software into the control module (during the same dealer visit) and it has been functioning as intended ever since.
High Pressure Fuel Pump leaking fuel into crankcase; TSB exists so HPFP replaced under warranty & oil changed.