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  1. #1

    Default Transmission allready???


    I have a 2010 GMC Sierra 1500, 44Kmiles, and the last few days I start to notice that on the highway, the tach will slip around between 2 and 4K rpm's when I accellerate.

    I use the truck as my daily 50 mile commute to work, regualr oil changes, and moderate weekend towing (it has the tow package) for a trailer that holds 3 quads.

    This morning, on my way in, I messed around with driving in tow mode, adn it seems the issue might go away when I do this, but probably coincidence.

    Anyways, could my tranny be going already?

    JJ in Pittsburgh

  2. #2



    Are you planning on taking your Sierra to your local GMC dealership to have this issue diagnosed?

    Evan, GM Customer Service

  3. #3


    10yr 100,000mi warrenty should cover your issue!
    2010 GMC SIERRA CREW CAB (Silver) 4x4, ReadyLift 2.5" Level Kit, 305/60/18 Dick Cepek Mud Country, Go Rhino Nerf Bars, Husky Liners front and rear, Bushwacker Bed Rail Caps, EFI/Live Custom tuned. 4:11's

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