GenVibe - Community for Pontiac Vibe Enthusiasts

Recently I've been hearing my exhaust a little louder than it should be indicating a leak or hole. I got under the car to inspect and can't find any obvious problem, but the noise seems to be coming from the engine bay which leads me to believe it is the exhaust manifold gasket.

Has anyone here had to change that? Is it relatively easy to access? What are the torque specs on the bolts?

Check the front O2 sensor make sure it's tight. Keithvibe should know all about the exhaust manifold on the AWD.

i suggest that proper diagnosis of a possible exhaust leak needs to be done prior to guessing and throwing parts at it.

safely raise and support the vehicle
start engine, allow to idle
shove a rag into the tail pipe
listen for whistling or excessive air leak from exhaust system
identify source of leak
repair
enjoy

did you ever find your leak?