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I have had my 2005 SRX into the dealership 4 times trying to solve a loud sticky lifter or a water pump bearing going bad sound. The dealership and GM claims it is carbon build up from using high octane gas. The dealership did several de-carbonization cleanings of the engine without any luck. They even poured a quart of Zmax Micro Lubricant into the engine to stop the sound. Has anyone else experienced this problem?
 

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2014 Standard SrX grey/black 2006 GTO
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V8 or V6?

My V6 had a bad camshaft which made a sound like a bad bearing.
Both left side camshafts were replaced plus the retainers.
My delaership had another SRX do the same thing a week before.

You can do a search in this forum under "camshaft" and my thread should come up.
 
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