Recent content by Td_symmons

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    2017 Yukon hesitating/shuddering

    I did multiple test drives last night. On one of them I monitored and reviewed almost every parameter related to the the AFM. Cylinder deactivation was never engaged when I was having the issues. No faults occurred. Both the dash and the parameter agreed that it was in v8 during the shake. I...
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    2017 Yukon hesitating/shuddering

    Great to know! I’ll see if I can do a test drive with AFM disabled
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    2017 Yukon hesitating/shuddering

    Great. Will do. Thanks! @jyi786 great, hopefully we can get this sorted out together. I use my Autel mk808. I switched from autoenginuity in 2022. I really don’t like the Autel, but it’s one of the most cost efficient modern scan tools that had the functions I was looking for (had to include...
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    2017 Yukon hesitating/shuddering

    Sure thing. Will do. I was under the impression that I was monitoring the fuel lift pump pressure output from a (low pressure/lift pump) fuel pressure sensor. Is this not the case and it’s actually just the commander pressure ? Do I need to connect up a fuel pressure gauge?
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    2017 Yukon hesitating/shuddering

    Great info. Thank you. I’ll check many of that this weekend.
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    2017 Yukon hesitating/shuddering

    Absolutely. It is very consistent. Any time I’m going about 70mph and press the gas pedal a bit harder, it will recreate the problem almost every time. Let go of the gas pedal, and it stops- and drives smoothly. It’ll also do it on cruise control under the same conditions. When I take off from a...
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    2017 Yukon hesitating/shuddering

    Hi! I’m really not sure about it being the transmission. I went for a test drive monitoring torque converter slip and froze the data when I experienced it. Here’s some screenshots. Note the data values above the graph.
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    2017 Yukon hesitating/shuddering

    Hi all! New to the forum and first post: I have a 2017 GMC Yukon 5.3 SLE 4WD (157k miles) with a hesitation issue. While accelerating, the vehicle experiences a slight shudder and acts like it has a very hard time accelerating until it downshifts and the shudder goes away. No trouble codes...
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    2017 Yukon hesitating/shuddering

    Hi all! New to the forum and first post: I have a 2017 GMC Yukon 5.3 SLE 4WD (157k miles) with a hesitation issue. While accelerating, the vehicle experiences a slight shudder and acts like it has a very hard time accelerating until it downshifts and the shudder goes away. No trouble codes...
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