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Cchiper1957 replied to the thread Surging, bucking hesitation, cold ,throttle just off idle under 25 mph.Thanks for the info man, I will look into the FCPM.There’s an update to my dilemma. Today I recorded a U 3000–49 code for differential...
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Cchiper1957 replied to the thread Surging, bucking hesitation, cold ,throttle just off idle under 25 mph.Thanks for the reply, brother. I did run some cleaner through the gas tank with no change. The dealer suggested a proper injector flush...
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Cchiper1957 replied to the thread Surging, bucking hesitation, cold ,throttle just off idle under 25 mph.Yes it does have latest update.Bought used last summer and started acting up last December and it was intermittent but now every...
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Cchiper1957 posted the thread Surging, bucking hesitation, cold ,throttle just off idle under 25 mph in Engine & Drivetrain.2021 Yukon 5.3 AT4 50000 miles ,valve body replaced, torque converter replaced, no codes, runs good when warm. Has anybody else had this...
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