130K on it. exhaust? manifold? on 2000 Oldsmobile Silhouette

i have a 2000 olds silhouette with 130K on it. While stopped at a red light, the exhaust suddenly became very loud. i believe that it was coming from the front of the vehicle rather than the muffler in the rear. Before this, it would occassionally miss and/or small backfire if in a lower gear other than D. Any ideas on costs?

Asked by for the 2000 Oldsmobile Silhouette
sounds like poss head pipe came loose,ck with a muffler shop for est. this needs to be looked at for proper est due to poss broken bolts.if it just came loose maybe 60.00 if bolts are broken who knows
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Something in the exhaust system cracked or broke...need to find out EXACTLY what needs to be done to give an idea of costs...