heartygrn

My trunk closer on my 2004 LS misfires and goes off multiple times when I go to close the trunk. I have to move the lid up and down to get it to stop. It seems to only do this in the winter when it's cold out. Any ideas on which part to start with? Trunk motor, trunk computer, etc? This and my passenger seat heater have been my only trouble and I'm at 183K.