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4l60e transmission differences

This is a discussion on 4l60e transmission differences within the Technical / Maintenance forums, part of the General Discussion category; I just wanted to know if there are any differences between the 4l60e trannys. I am working with a wiring ...

  1. #1
    Original Gold Member SLMDLT1's Avatar
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    4l60e transmission differences


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    I just wanted to know if there are any differences between the 4l60e trannys. I am working with a wiring harness from a 94 trans am and the transmission is the 4l60e from my 96 gmc sierra. I would think they would be the same, but sometimes ya never know. If anyone has some input, it would be appreciated.
    2003 GMC Sierra ECSB Z71...6-7.5" Superlift, 20" Eagle 064s on 37x13.50x20 Kumho MT's, Predator, etc.
    1998 Chevrolet Camaro Z28, LS1/M6/C5's/SPEC/Lid/LT'S/MAGNAFLOW

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    Naturally aspirated! PSWired's Avatar
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    Pretty sure the electronics between the 93-95 4L60E and the 96-99 4l60E and the 99-02 4L60E are all different. Hopefully someone can explain the specific differences between these model years.
    1995 GMC Yukon

    -383 stroker engine, built 4L60E transmission, 2800 stall converter, 4.10 gears, Eaton Posi
    -16x8 AR Sliders with 285/76/16 Bridgestone Dueler A/T Revo tires
    -Stealth aftermarket sound system, alarm/remote start, Escalade cluster

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    Original Gold Member SLMDLT1's Avatar
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    I heard somewhere that 95 and up had something different controlling the torque converter lockup. I am sure someone out there knows. I am puttin my engine swap on hold until I know that I can rewire the tranny or change something out on it to make it work, or if I need to get a 94 tranny before I put the motor in.
    2003 GMC Sierra ECSB Z71...6-7.5" Superlift, 20" Eagle 064s on 37x13.50x20 Kumho MT's, Predator, etc.
    1998 Chevrolet Camaro Z28, LS1/M6/C5's/SPEC/Lid/LT'S/MAGNAFLOW

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    Naturally aspirated! PSWired's Avatar
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    I'm not totally sure on this one, but I think the 93-95s are the same, and it was 96 that they went to a PWM TCC apply system. This allows the torque converter to be partially unlocked. This is the same year they switched from OBDI to OBDII, and added vortec engines.
    1995 GMC Yukon

    -383 stroker engine, built 4L60E transmission, 2800 stall converter, 4.10 gears, Eaton Posi
    -16x8 AR Sliders with 285/76/16 Bridgestone Dueler A/T Revo tires
    -Stealth aftermarket sound system, alarm/remote start, Escalade cluster

  5. #5
    Original Gold Member SLMDLT1's Avatar
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    It was 95 when they switched to the pwm crap. My programmer has my computer right now and I called him and said he can program my 94 computer to control my 96 tranny no problem.
    2003 GMC Sierra ECSB Z71...6-7.5" Superlift, 20" Eagle 064s on 37x13.50x20 Kumho MT's, Predator, etc.
    1998 Chevrolet Camaro Z28, LS1/M6/C5's/SPEC/Lid/LT'S/MAGNAFLOW

  6. #6
    Naturally aspirated! PSWired's Avatar
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    Huh, I didn't know it was 95, thought it switched with the OBD change in 96. Learn something new every day.
    1995 GMC Yukon

    -383 stroker engine, built 4L60E transmission, 2800 stall converter, 4.10 gears, Eaton Posi
    -16x8 AR Sliders with 285/76/16 Bridgestone Dueler A/T Revo tires
    -Stealth aftermarket sound system, alarm/remote start, Escalade cluster

 

 

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