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Discussion Starter #1 (Edited)
I am new to this site but have had my 05 g6 gt for a few months and everyday something else is wrong. It has the 3.5 v6 with 115k question is I have a weird tick that started all the sudden and wonder if you guys have any thoughts. Also my cats are bad I thought about replacong them with just pipe to save on cost since warranty is out of the question the ticking is when the car is started till I shut it off sounds to me like it's coming from
The front of the intake manifold. Will try to upload a video if I figure out how
 

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Ticking could just be the lifters. Not totally uncommon

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Discussion Starter #3
Thank you I checked them out but my noise was my catalytic converters. Got those fixed and now I have a rough idle. Replaced all the usuals and still there
 

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If you just replaced the cats, the computer might need to do some relearning. Try disconnecting the battery for a hour or so and then see how it runs.
 
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