Hope someone on here can lead me in the right direction. My brother has a 2007 HHR with the 4 cylinder motor. Today the car is back in the shop for the 3rd time for a cylinder failure. First was the # 1, then # 2 and now it's # 3. WTH!!! They say they are instaling a steel sleeve in the cylinder and that fixes it, until the next time. This car has 47,000 miles on it and the motor has been torn down now 3 times. At what point does GM just replace the motor or the car? Isn't there a lemon law on these kinds of things? Any help would be greatly appreciated!