What speed does your DTS shift into D/OD? - Page 2

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Cadillac DTS Forum - 2006 through 2012 Discussion, What speed does your DTS shift into D/OD? in Past Cadillac Vehicle Discussion; Light load I can get it to upshift at about 39. Otherwise, steady throttle, it does it at 43 - ...
  1. #16
    TulsaVic is offline Cadillac Owners Enthusiast
    Automobile(s): '08 DTS Performance (gone)
    Join Date
    Jan 2008
    Harrison, ME

    Re: What speed does your DTS shift into D/OD?

    Light load I can get it to upshift at about 39. Otherwise, steady throttle, it does it at 43 - 45.

  2. #17
    Submariner409's Avatar
    Submariner409 is offline If it won't run, install big wheels !
    Automobile(s): 2002.5 F55 STS, 2014 Explorer XLT 4WD
    Join Date
    Feb 2006
    MD Eastern Shore

    Re: What speed does your DTS shift into D/OD?

    Here are the later "DTS" transmission ratios - 3 is D, 4 is OD. TCC is not a gear - it is a viscous clutch that removes most of the 4th gear slip between the TC stator and rotor.

    1 = 2.96
    2 = 1.63
    3 = 1.00
    4 = 0.68 (OD)

    You need to find your model/option final drive ratio - most were the economy/cruise 3.11:1. There are speed-rpm tables, TCC engaged above 43 mph, in my albums.

  3. #18
    danog is online now Cadillac Owners Fanatic
    Automobile(s): 1936 cadillac 08 DTS 11 DTS
    Join Date
    Nov 2011

    Re: What speed does your DTS shift into D/OD?

    Transmission General Specifications (4T80-E)

    RPO Codes MH1
    Production Location Willow Run, Ypsilanti, MI
    Vehicle Platform, Engine/Transmission, Usage H, Ksp
    Transmission Drive Transverse Mounted Front Wheel Drive
    1st Gear Ratio 2.960:1
    2nd Gear Ratio 1.626:1
    3rd Gear Ratio 1.000:1
    4th Gear Ratio 0.681:1
    Reverse 2.130:1
    Torque Converter Size, Diameter of Torque Converter Turbine 265 mm
    Pressure Taps Line Pressure
    Transmission Fluid Type DEXRON® VI
    Transmission Fluid Capacity, Approximate Bottom Pan Removal: 7.0 L (7.4 qts)
    Complete Overhaul: 12.0 L (12.6 qts)
    Dry: 14.2 L (15.0 qts)
    Transmission Type: 4 Four Forward Gears
    Transmission Type: T Transverse Mount
    Transmission Type: 80 Product Series
    Transmission Type: E Electronic Controls
    Chain Ratios, Designates Number of Teeth on the Drive/Driven Sprockets 39/39
    Final Drive Ratios 3.11, 3.71
    Position Quadrant P, R, N, X, 3, 2, 1
    Case Material Die Cast Aluminum
    Transmission Weight Dry 121 kg (266.75 lbs)
    Transmission Weight Wet 133 kg (293.21 lbs)
    Maximum Trailer Towing Capacity 1 361 kg (3,000 lbs)
    Maximum Gross Vehicle Weight (GVW) 3 084 kg (6,800 lbs)

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