What are some of the 2010 gmc sierra transmission problems?

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Nick B. January 11, 2021
While the 2010 GMC Sierra 1500 is a relatively durable and reliable truck all around, the transmission is one of its weaker points; that's not to say that it's terribly unreliable, but there's a good chance that You'll have issues with it -- albeit minor or significant -- over the lifetime of Your truck. GMC has put out a number of technical service bulletins, and drivers have reported a small host of problems. The most common transmission issue is harsh shifting, particularly between first and second gear. The problem has been traced back to the wiring harness for the torque converter clutch. Drivers also noted a number of diagnostic fault codes, including P0776, P0796, P2714, and P2723; these are typically caused by a pressure leak in the clutch regulating valve.
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Eric E. April 10, 2020
Some potential problems with the transmission in a 2010 gmc sierra are grinding gears, lack of response and contamination due to lack of maintenance.
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Gerald Saiz July 13, 2023
It shows code 796 would it work to change the filter and new oil in my 2010 GMC Sierra 1500 5.3 eng.
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Gerald Saiz June 11, 2023
Having trouble sifting it sift all gears but a little rough when sifting it got 33000.00 miles might be code PO796
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John Hickey February 23, 2023
My 2010 GMC SIERRA 4.8 1500 . The transmission has a really loud whine in low gear once it shifts to2nd its fine. My truck has around 116000 miles on it. Thanks
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