Product review (4 stars): Not Bad
Bought this as a cheaper alternative to the GM replacement filters.  For the first week or so there was a tiny "drip" coming from the refrigerator (water/ice dispensing area) that wasn't there when using the GM brand filters.  Instead of taking it out and sending it back, I chose to give it a little time.  Needless to say the drip stopped and I kept the filter.  I would have given it 5 stars had it not been for the slight leak, it wasn't bad though.  I'd probably buy again.