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Q: Keeps shutting off. on 2003 GMC Yukon

I'm having an intermitent problem with my 2003 GMC Yukon which keeps shutting off whenever I make a quick sharp turn (like pulling into or out of a parking spot) and whenever I go in reverse. My engine light does not come on whenever it happens and I just had a tune-up and replaced the fuel filter.
Could you please give me some idea as to what is causing the problem?
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Had same issue. Take off the intake housing (where it connects to throttle body) and clean the gunk off of the throttle body intake. The "flapper" valve has a tendency to get crudded up and stick. They sell the cleaner for it at Auto Z or other local part stores.
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