my daughter has a 04 grand prix gt recently had radiator changed leaking at end caps i think now the fans dont come on could have been prior problem just the info im gettin .fans will come on when the a/c is on .one more thing that may be related the a/c doesnt blow cold but this maybe a different problem i dont know if compressor kicks in or not main ? is what relay would this be caused by or?what should i check next?