CD player install/problem wit keyless entry

ok installed aftermartket cd player in gf car now keyless entry wont work, (keyless entry is from GM). any ideas whats up?

umm that really weird. the headunit shouldnt have anything to do with the keyless entry. only thing i can think of is maybe a wrong wire got snipped.

yea i dunno i kno certain years have different setups especially if you have the dealer keyless entry and stuff, mine didnt n it works fine but hers is a 97 so i dunno