One problem related to transmission solenoid has been reported for the 2009 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Chevrolet Impala based on all problems reported for the 2009 Impala.
Upon starting and attempting to back out of my garage to go to work, the release button on the floor mounted gearshift lever would not depress, thereby preventing me from shifitng into reverse, let alone drive if I was successful in backing out of the garage. Here is the description on my receipt for repair: "inspected loss of power at shifter at r. T. S. I. Solenoid - (previously repaired ground circuit 1135 green voltage supply broke at connector) - nec to replace complete connector and harness and route correctly -- grid# 013, doc id#'s 1912937, 2417697" this is the second time I've had this issue. The dealer took care of me appropriately each time. However, I see that other owners of Impalas are experiencing the same problem via the internet. I sure would appreciate it if it was looked into. I'd hate to see any body have this problem in a not too friendly area, let alone my spouse. Thank you.