I drive a 2010 Chevy HHR. I noticed not to long after I purchased it new the door(drivers side passenger) would not open from outside or even inside when I would crawl inside and try to get it open. It would only do it on occasion. Now it has ceased to happen at all in the past 6 months. On May 25th of this year the passenger side did the same thing. My mother and I were traveling to my daughters graduation and it completely locked her inside. She could not get the door opened at all even though I hit the unlock button and she tried many times to do the same thing on her side. The actual door lock was in the up position showing that the door appeared to be in the unlock position but when she went for the handle it was still locked. This happened several times on this day. It even set my alarm system on my car off because after it refused to unlock it eventually did and then refused to lock back. I go around after getting out of the vehicle making sure all my doors were secured and it was not locked even though the latch was in the down position and appeared to be secured. Is this a computer problem with these vehicles" I have read about problems with the older model HHR's having this problem but not on a newer one of the year I have. What I want to know is can someone access my computer board in my vehicle and set those locks to mess up? it was almost like someone was maybe wanting in my vehicle and what a better way to do it than to mess with the locking system. I would have never known my vehicle was unlocked had I not went over and physically checked it that day because like I said it appeared to be locked. The lock actually went down when I hit my key fob to lock my doors that day. Weird thing is...it hasn't done it since then....how does a vehicle fix itself"

- Ironton, OH, USA

Bought a used 2010 Chevrolet HHR on July 09, 2011 from a major dealer. On July 23,2011, drove two miles to super market. The engine would not shut off and I could not remove the key from the ignition. Finally had to disconnect battery to stop the engine from running. Had the vehicle towed to Chevrolet dealer and was told the ignition lock cylinder was broken. Fortunately, the vehicle was still under factory warranty and was repaired at no cost. The service advisor said this occurs frequently with this car and would no doubt happen again. Great to know it will happen again, only you don't know where you will be when it happens or what time of day or night.

- La Quinta, CA, USA

The ignition interlock cylinder in our 2010 Chevrolet HHR failed and the key became stuck. We were unable to remove the key or turn it to the "off" position. I had to remove the fuel pump fuse and battery to shut the vehicle off. This also disabled the airbags in the vehicle. GM stated they knew there was a problem and have issued "advisories" but no recall so the customer is responsible.

- Claremore, OK, USA