Chevy 2500HD With A Bizarre Running Issue

In this video I have a look at a customers 2001 Chevy 2500HD with the big 6-oh and the customer states it runs very poorly as soon as it warms up. A little bit of time looking at some running data we soon discover a huge problem in the fuel trims and notice the O2 sensors are not working like they should. Sounds easy enough right?
-Enjoy!

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Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained.