tr Chevy cobalt / HHR 2.2 liter Engine computer ECU Up for sale is a Working, in excellent condition 2.2 liter cobalt / HHR ecu. My list shows this should fit most 2.2 liter models 05-06 - check the part number off your original unit to be sure.This good used unit is from a crash damaged car should last for for years, AND comes with a FULL 30 day functionality warranty! If the unit fails to opperate properly in the 30 days after you receive it, you may return it to us for a refund or replacement. We will accept returns on working units if it turns out the ECU was not your problem, but we will charge a 30%25 restocking fee for returned working units.If you need one of these units now, this is a bargain price, buy it from me for less than 1/10th the dealer list price! Even If your car does not have these issues but you intend to keep it a while, I recommend our customers keep an extra ECU in the trunk. These units now have to be special ordered from most dealers new over $500, and you can never find a good used one when you need one. Even now finding a good one second hand is getting to be quite difficult as these cars get older.