This topic contains 4 replies, has 2 voices, and was last updated by 
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I tried cleaning my intake valves on my 2022 Trail Boss 5.3, I removed the air box and the truck stalls out. Anybody know how to do this? I wanted to clean them before every oil change.
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It sounds like you need to just put a good fuel additive in the tank…
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Morning, I thought DFI engines , the gas doesn’t hit the valves and builds carbon . I would love to just add an additive.
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Honestly havent seen a problem at our dealership. GM part number 88865595 is a great fuel system additive. Myself, I put some in every oil change and havent seen any problems
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That’s great to hear. Thanks for the advice. That’s what I’m going to do. Hell of a lot easier too.
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