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Thread: 4L60E Reference Material

  1. #11
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    Awesome, Im going to have some trans work done and want to check a couple things first, this is really going to help!
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  2. #12
    Joe (Moderator) joecar's Avatar
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    Default 4L60E Manual Valve Position Fluid Pressure Switches






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    Last edited by joecar; February 21st, 2014 at 02:18 PM.

  3. #13
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    Default Re:

    Quote Originally Posted by Joel_SS
    Here are the docs that I have it is an 8MB package and contains the following..

    hydra-matic.4l60-e.electronic.controls.pdf

    4L60-E hydraulic schematic key.pdf

    4L60-E hydraulic schematics.pdf

    4l60e manually shift conversion.pdf

    4L60-E Overhaul.doc

    http://members.torquecentral.com/joel/4l60e/4l60.zip
    Joel: You wouldn't happen to have this info on the 4L80e would you? BTW, you file above helped me out tremendously today. Was doing a shift kit and had all the valve body bolts in a handy dandy bolt sorting box (has holes arranged the same as the valve body so I don't have to remember where the bolts go) but as can be expected, turned it over and dumped them all out. Since there are seven different sizes (lengths and head sizes combined) I was at a standstill until I remembered your post. Thanks for the help!

  4. #14
    Joe (Moderator) joecar's Avatar
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    Default 4L60E Operating Conditions





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    Last edited by joecar; November 9th, 2013 at 08:46 AM.

  5. #15
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    forged LS1 I Patriot Stage III heads I Patrick G spec'd TR grind Comp Cam I ProCharger I High Tech Transmissions I Ultimate Converter Concepts I tuned by cablebandit (soon to be me) @ MSS I Exotic Exhaust & Fabrication custom exhaust

  6. #16
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    Default 4L60E swap

    Hello all, newbie here. I read a few posts & you seem like a great group... so I joined.

    QUESTION 1: I have a 1997 Express/4.3/4L60E shallow-pan while the 2000 Astro/4.3/4L60E Deep-Pan. Will the Express trans work in the Astro without major mods? Both trans are One-Piece housings.
    Tomorrow I'll have to measure the total length, (it's to dark & cold now).

    QUESTION 2: To rebuild the Astro Deep-Pan, is there any quirks I need to look out for verses a normal automatic? My last rebuild was a (late 1970's) Turbomatic 350.

    HISTORY:
    This Astro (mileage 200K) trans shifts fine in 1-2 but has no 3-4 gear so I'm assuming the clutches R-Gone. Fluid is only "ever-so-slighty" burnt & clear-brown. I haven't dropped the pan yet for inspection, (just got the car today).

    Direct answer would be REALY GREAT, my free time is very short.

    THANKS!!! fm
    fvm(a)usa.com . . . (a)=

  7. #17
    Joe (Moderator) joecar's Avatar
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    Default 1997 Express van diagrams...

    Hi fm-usa,

    Welcome to the forum...

    I couldn't answer your questions with certainty...

    but here's the transmission wire diagrams for the two vans, the wires/pins appear to be the same, so my guess is they are interchangeable.

    Yes, 4L60E suffering no 3rd or 4th typically is 3/4 clutch failure.
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  8. #18
    Joe (Moderator) joecar's Avatar
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    Default 2000 Astro Van diagrams...

    With the deep pan you have to get the correct filter.
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  9. #19
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    (if others have more info please respond)

    BY-THE-WAY... is there a GOOD website dedicated to just Astrovans? So far all I found is body-rebuilders.
    ___________________________________________

    That's SUPER joecar, it's a start.

    It's 8AM and was just about to don my wetsuit to swim under my cars (lots of rain here).

    When times were good I had my '97 Express Pro-rebuilt, todays economics is just killing me.

    THANKS!!!
    FM

  10. #20
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    Good info!

    Here's a little more that might or might not help some others with problems: Circuit 1020 in S-Series (Blazer, Jimmy, Bravada, S-10, Sonoma) controls tranny functions, and is subject to failure because of a switch in the steering column connector harness. Many transmissions have been rebuilt because of this failed $80 switch.

    Failure of this circuit can make the tranny default to limp mode, 3rd gear only, and can trip the tranny fluid pressure controller to max, which will make the tranny detonate in a week if not fixed, or at least re-set in the computer for temporary fix.

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