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2015 Traverse LT AWD
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Well I went a different route .. after a little poking around I thought I’d give it a shot of sea foam , I dropped one can in the fuel tank and did a hot soak in the top end. After the hot soak 10 /15 min I fired it up and lots of sample for the first bit , drove it around and cleared it out ,, very noticeable difference,, idles smooth, no misfires ,and better pick up , I’m not a big additive fan by any means , but this stuff works it seems .. just thought I’d update this .. thanks guys for your help .. has anyone else done this and had similar results?
Thank you for the update. Please update any adverse effects and changes on gas mileage.
 

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One thing that helped my 2016 Traverse was to clean out the throttle body around the butterfly with carb cleaner. This definitely helped the idle situation.
 

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Discussion Starter · #23 ·
I wasn’t having trouble with the idle was having misfiring issues , it may have been gummed up I’m thinking
 

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I changed out the original plugs at 100K with the ruthenium type and this helped out a little. Later on I changed out the coil packs with a high performance type (dragonfire) and I immediately saw a mileage improvement and better performance. You might want to consider doing that as well.
 

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My hesitation is the carbon breaking off and scoring the cylinder walls. GM had an official procedure which was similar, feeding solvent into the intake, but they quickly abandoned that. My guess was that it created more problems in some customers engines.
 
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