I have a 2017 GMC Yukon Denali that was sitting for a while approx 1 yr. I ran the gas out of it put new gas in it, gas treatment and took to get oil change. When I left from getting oil change it was making a clunking noise and not accelerating right so I stopped and had it towed home. Need someone to help me get it running right. Tomorrow morning or Saturday morning would be ideal.
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