what is fair price to replace something called the "oil pan" or "gasket Pan"? on 2002 Buick Rendezvous

oil is leaking out. first I went to independent mechanic & that's what they told me. then I went to Buick & they said there was no leak but oil was all over the place & to come back (no charge) if leak reappeared. I went back after observing oil starting to leak again & they said the something another pan (sorry I don't recall name) needed replacement. thank you.. I see the drips on paper I've placed in the garage under the car.

by in Mount Dora, FL on July 18, 2013
1 answer
ANSWER by on July 18, 2013
The most common places for a 3.4 engine to leak are the intake manifold ends and the oil pump drive located under the rear of the intake manifold. See if someone in your area can add a flourescent dye to your oil and pinpoint your leak to properly diagnose it.