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Hey guys i also have a 2010 chevy hhr and the windows quit working one at a time eventually all i had left was drivers window. I tried everything i could think of window motors ,switches, fuses and even checked the wire between the door the the frame of the car under the rubber bushing still all i had was drivers window at this point i broke down and took it to a local shop and they discovered that under the drivers side carpet there is a (master wire harness) that's what he called it/ and over the years with me living in wisconsin with our winters melted snow and salt sunk through the floor and corroded the wires cause them to break randomly. They resoldered a few of the wires for me and Bam i got all my windows back. It costed about $75.00 hope this helps someone maybe be able to save yourself a few bucks.