Hi, I have a 2002 pontiac transam that I drove all week and parked on Friday. She ran beautifully no problems. On Monday I went to start her to go to work, she gave me a horrible clunk sound from underneath and the top end was clattering. The outcome O oil pressure. I am going to replace oil pump and hope for the best. How do you change the oil pump? I have a Chiltons book for this model but it has left me a bit confused. Can anyone help?
