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JEGS 4L60E Performance Transmission for 2005 & Earlier GM LS Engines

555-603020

made in usa

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4L60E Performance Transmission for 2005 & Earlier GM LS Engines
$1,763.99
Truck Freight: $178.99
4L60E Performance Transmission
  • 2004-2005 GM LS-Series Engines
  • Rear Wheel Drive
  • Lockup
  • Case Fill
  • Dyno Tested
  • 13-Pin Wiring Harness Connector
  • Ships on 05/22/24

    Thank you! We will notify you when this product becomes available.

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    603020 is rated 3.7 out of 5 by 12.
    Rated 5 out of 5 by from Excellent product! This is a great product! Shift great and firm! No issues! Fast shipping!
    Date published: 2022-08-18
    Rated 5 out of 5 by from 4l60e transmission Transmission looked great and works great. Very pleased with fast shipping.
    Date published: 2022-01-14
    Rated 4 out of 5 by from Good Transmission for the money Installed this transmission a few weeks ago in my LS swapped ‘65 C10. Installation was simple, filled with Royal Purple Max-Shift fluid, and it worked great, shifted like it has a shift kit in it. Then parked it in shop and 3 days later tranny fluid leaked onto the floor. Found that the pan was leaking badly, removed pan and could see that pan bolts ahead been over tightened at some point and had distorted the pan. Also found 2 pan bolts had bad threads. I was able repair. Jeg’s then agreed to ship me 4 quarts of fluid and a new pan gasket. The pan gasket it comes with is a cheap rubber one. I replaced it with a Fel-pro gasket. Overall I’m happy with the Transmission even though I had to do a little extra work. You can’t get one rebuilt for this price.
    Date published: 2023-06-14
    Rated 2 out of 5 by from Wouldn't recommend Got this to replace the 4l60 I blew in my Silverado. It arrived poorly packaged (it poked through the flimsy box it was packaged in), but I figured whatever, it didn't have any damage. Im happy it comes fully assembled with electronics and all, it made install smooth, paired the trans with a new oem torque converter. Started it up and it ran great until it hit the highway. After that it got a p1870 code. I plan to replace the valve body since I have a new fully assembled one in my garage. Hopefully that does the trick. Ive also noticed trans fluid seeping slowly out of the bellhousing access hole/dust cover. Should have bought a rebuild kit and rebuilt my existing 4l60, overall disappointed with this product for apparently being dyno tested and built to last. They should also package this MUCH better. The box it came in was a joke. Price is pretty average, but should reflect a product that won't have problems out of the box. Time to sort out this p1870...
    Date published: 2021-02-02
    Rated 2 out of 5 by from Shift solenoid a I really hate writing bad reviews. But I bought this 4L60E in Hopes to have my GTO back but now after installing. Trying to figure out what's going on with shift solenoid a for a P0753 code "shift solenoid a electrical" pretty bummed after installing to find out my car would still be on jack stands. Packaging was great and transmission looked great on the outside but its stuck in limp mode for now..
    Date published: 2019-08-14
    Rated 1 out of 5 by from Transmission came with no speed gear I bought this expensive transmission and it came with no speed gear and I spoke to 3 jegs employees and none of them could help me the last one I spoke to basically told me that this transmission came without it and the funny part is that it comes with a brand new speed sensor but no gear really disappointed I’m not a rude person all I want is a solution.
    Date published: 2024-04-08
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    i have a 2007 silverado classic 4.8l vortex and am not 100% sure but i’m hoping this us the trans i need. can someone please give me some help?

    Asked by: ReelCateye
    The Jegs 555-603020 transmission does not fit 2007 models.
    Answered by: jshook
    Date published: 2024-03-19

    Will this fit 2005 trailblazer 4x4 with 4.2L engine?

    Asked by: Seth
    The Jegs 555-603020 transmission does not fit 4x4 applications.
    Answered by: jshook
    Date published: 2024-02-14

    will it fit a 2000 1500 chevy silverado v8 5.3l rwd and what is a 13 pin????

    Asked by: Ryan
    The Jegs 555-603020 transmission will fit a 2000 Silverado with 13-pin harness connector.
    Answered by: jshook
    Date published: 2024-02-26

    Is it 450 crank or wheel HP

    Asked by: Areyna916
    The rating on the Jegs 555-603020 transmission would be at the engine.
    Answered by: jshook
    Date published: 2024-02-09

    Does this fit a 1999 Chevy 1500 RWD 5.3

    Asked by: Nanapeel
    The Jegs 555-603020 transmission will fit a '99 Silverado 1500 with 13-pin connector.
    Answered by: jshook
    Date published: 2024-02-09

    Is it for a 4wd truck

    Asked by: Chevy man
    The Jegs 555-603020 transmission if not for 4wd vehicles.
    Answered by: jshook
    Date published: 2024-01-17

    Does this fit 2003 Chevrolet 1500 P/U 4.3L 2-wheel drive ?

    Asked by: GFORCE340
    The Jegs 555-603020 transmission does not fit an '03 4.3 engine.
    Answered by: jshook
    Date published: 2024-01-31

    Does this Transmission fit my 2002 Chevy avalanche 5.3 2wd? 

    Asked by: Wes14
    The Jegs 555-603020 transmission will fit an '02 Avalanche with 13-pin connector.
    Answered by: jshook
    Date published: 2023-12-18
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