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  1. #1

    Default Hydra-Matic 6-speed - Good tranny?

    My 2011 Silverado came with the Hydra-Matic 6-speed transmission. It has a manual mode with a shift button on the shift lever. What do folks generally think of this transmission? Also, what about using the shift button to manually shift? Bad idea? Just wondering what kind of wear and tear I'm putting on it. It's pretty hilly around here so I use the manual shift frequently. Otherwise, the automatic shifting goes up and down way too much.

    2011 Silverado Z71 4x4 5.3L - 6" FabTech Lift, 35" Toyo's on 20" Raptor's, Magnaflow exhaust, CAI, Intune Custom Tune
    2007 Tahoe LTZ 4x4 5.3L - Black, 22" wheels, no other mods
    2008 Jetta Wolfsburg Edition 2.0 Turbo - Black currently stock
    1993 Mercedes C300 Convertable Straight 6 - Red, 17,000 original miles
    2007 MB Sports B52 - 22' Competition wakeboard boat, 6.0L 375hp

  2. #2

    Default

    When you installed your lift and tires did you reprogram the trucks computer or regear the truck? That may be why the trans keeps shifting up and down so much.
    :cool:

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.
    :glasses:

  3. #3

    Default

    Quote Originally Posted by silveradotrailblazer View Post
    When you installed your lift and tires did you reprogram the trucks computer or regear the truck? That may be why the trans keeps shifting up and down so much.
    No. The place I had the lift done doesn't do that so need to find a place local.

    2011 Silverado Z71 4x4 5.3L - 6" FabTech Lift, 35" Toyo's on 20" Raptor's, Magnaflow exhaust, CAI, Intune Custom Tune
    2007 Tahoe LTZ 4x4 5.3L - Black, 22" wheels, no other mods
    2008 Jetta Wolfsburg Edition 2.0 Turbo - Black currently stock
    1993 Mercedes C300 Convertable Straight 6 - Red, 17,000 original miles
    2007 MB Sports B52 - 22' Competition wakeboard boat, 6.0L 375hp

  4. #4
    Jr. Apprentice Phooey's Avatar
    Join Date
    Feb 2011
    Location
    Upstate New York
    Posts
    17

    Default

    Get it re-programed at your dealer. Chances are it needs an update anyway, maybe there won't be a charge.

    I'm sure the trans is good, but it's too bad they dont have a switch,......eco/tow/sport. Would be nice........

    Great looking truck BTW. Regular cab shorty......very rare in any form.
    2007 C-1500 LT RC/SB (294 SS)

  5. #5

    Default

    I don't think the dealer can adjust for 35" tires. I would start with a programer, like the Diablo Trinity to at least get the tire size corrected, this will help with the trans. Also you can adjust all sorts of things with the Diablo Trinity. You can data log with it, adjust the LongtermFuelTrims ( this really helps with throttle response, mpg's and all around performance.) and then get a custom tune via e-mail.
    :cool:

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.
    :glasses:

  6. #6
    Jr. Apprentice Phooey's Avatar
    Join Date
    Feb 2011
    Location
    Upstate New York
    Posts
    17

    Default

    Quote Originally Posted by silveradotrailblazer View Post
    I don't think the dealer can adjust for 35" tires. l
    We can do anything your wallet will allow.
    2007 C-1500 LT RC/SB (294 SS)

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