4l60e

  1. B

    4l60e nps or npt fiittings?

    hey guys im working on transmission lines on my suburban 4l60e, i got a kit with npt fittings, i know its an nps but i used thread sealer and didnt overtighten, now im just second guessing and wondering if i remove the npt fittings, will NPS fittings be able to properly fit back in or did i ruin...
    • burbanswervin
    • Thread
    • 4l60e fittings nps npt threads transmission fittings transmission lines
    • Replies: 6
    • Forum: Transmissions
  2. Aidan Kesler

    Top end build worth it?

    first and foremost I’m not a tbi guy lol I ditched my tbi for an old school carb swap for my own personal preferences! Yes I used a 4l60e carb TPS sensor mounting setup for the trans, but that’s besides the point!! Anyways lol I’m sorta new to building motors so I need some insight. I’m...
  3. D

    1998 chevy 5.7 carb swap

    Hey everyone I have a 1998 Chevy suburban with 5.7 vortex that I did an intake and carb swap. Installed the TPs summit kit hei distributor and inline fuel pump. Runs great but the trans will not shift?? It’s the 4l60e. And my tach doesn’t work. Can anyone tell me what I’m doing wrong so as to...
  4. aking284

    Only 1st and Reverse!

    Hey guys! So my 4l60e tranny in my 97 c1500 suddenly started acted funny. It will engage first gear and reverse, but other gears will not. I do have a tranny leak which I tried fixing by replacing the rear main seal and the output shaft seal however it still leaks. Dip stick showed to be dry...
  5. G

    NEED HELP!! DRIVETRAIN COMPATABILTY FOR A 1993 CHEVY 1500

    Just as title says, 4l60e and the 5.7 TBI crapped out on my 1993 Chevy 1500 (2wd) within a couple days of each other. I hear there’s some compatibility issues within the years, and I’m having a surprisingly hard time finding parts for that specific year of truck, do I have other options? What...
  6. aking284

    No 2nd Gear?!

    Hey gentleman! So I purchased a used 4l60e tranny for my 97 gmc c1500 along with a brand new torque converter. Installed everything only to find that there is no 2nd gear! UGGHH!! All other gears work beautifully! Any ideas fellas? Thank y’all!
  7. S

    Shift linkage

    So i have a 93 C1500. Just recently put a new (used) 4l60e in it. But i cant get it into park easily. I either have to throw it or physically pull the linkage on the tranny into park. I know the bushings are bad. But they were bad on the original tranny. And i never had this issue. I tried...
  8. dasburb

    1997 K1500 suburban transmission options

    Hi everyone--I read the sticky about transmission compatibility, and I'd like to ask for input about what to do, what it'll cost me, and what the problems might be. Apologies in advance for a long post and thank you if you're reading it. Background: I love my suburban, I take it everywhere (40+...
    • dasburb
    • Thread
    • 1997 1997 k1500 1997 suburban 4l60 4l60e 4l80e 4x4 suburban transmission transmission swap
    • Replies: 25
    • Forum: Transmissions
  9. C

    4l60e problems after rebuild

    I just finished rebuilding my 4l60e trans and am having issues. The truck is a 1996 K1500 and I am the original owner. A little history of the trans; this is the 3rd rebuild. First rebuild was due to 3/4 clutch burn up was rebuilt by a local shop with a good reputation rebuild during pandemic...
  10. P

    96 gmc k1500 limp mode wont scan

    I need help! I have a 96 gmc k1500 truck which I love. On my way home, truck was driving fine. I went to pull in my driveway and it was like it quit pulling. It goes fine in reverse. I shifted to 4hi, still wouldn't pull. Shifted to 4lo and it went forward and I got into my driveway. Check...
    • pwesley
    • Thread
    • 4l60e 96 gmc limp mode transmission wont scan
    • Replies: 4
    • Forum: Transmissions
  11. S

    Can't find the right 4L60E Inspection Cover!

    Good morning fellas. Long time lurker, first time poster. I've exhaustively searched the forums and the interwebs because I DO NOT want to be "that guy". However, I am having no luck finding the correct inspection cover for my newly installed transmission. Backstory: The transmission in my...
    • SheepDog
    • Thread
    • 4l60e dust cover inspection cover transmission
    • Replies: 21
    • Forum: Transmissions
  12. T

    4L60E to 4L80

    So i have a 1994 C1500 with a 4L60E, 12 pin connector (non pwm) and i have this 1993 4L80E that i want to add in it’s place (pwm). What needs to be done to make it work? I’ve been researching and one idea that came up was stake open the PWM valve and leave the solenoid unplugged to act like...
  13. tksoldierx

    Funny 4L60E sound question

    So when I first started driving my 95 K1500 when I was 15, one of the most fun things to do on-road was go to a particular stop sign in town that went straight onto the highway, so I could accelerate from stopped to highway speeds (and above ) without impeding traffic by stopping in the middle...
  14. C

    Need help 1996 gmc 1500 5.7 4l60e 4wd trans slipping in park and grinding when manually put in first

    Let me start off by saying the trans was just rebuilt. Due to a bad torque converter the lockup clutch failed.so I decided to have the trans rebuilt while I had it out . Now when the trans is in the park gear is popping or clicking as the truck moves forward while in park.When you try to put it...
    • cagee2000
    • Thread
    • 4l60e grinding park slip rebuilt transmissions
    • Replies: 9
    • Forum: Transmissions
  15. B

    p1870 code after I replaced Valvebody. I need help and answers.

    97’ Gmc k1500 4l60e This is my first truck and I can’t afford to bring it into a shop. truck shot the p1870 code few months ago and had hard 1-2 shift, I then replaced TCC Valve with a fitzall part and all shift solenoids. it fixed my problem for a few months then the code showed up again. i...
    • bmw1997
    • Thread
    • #help 1-2 shift 4l60e p1870 transmission problem
    • Replies: 2
    • Forum: Transmissions
  16. S

    96 Chevy K1500 transmission stuck in 3rd

    Im having trouble diagnosing the codes my truck is throwing which are: p1886 Shift timing solenoid, p1860 Tcc pwm solenoid circuit - electrical, p1864 4-5 shift solenoid valve control circuit low voltage, as well as p0758 and p0753. The truck ran fine one day and quit the next. When I got in the...
  17. A

    Remanufactured 4L60e supplier

    I have a 2006 Silverado that is 2nd. I blew an oil cooler line and ended up smoking the 3-4 clutch packs in the 4L60e. I have since removed the trans and pulled the transmission apart, planning on doing the rebuild myself. Once I had my parts list and planned upgrades I realized that is is...
  18. N

    1998 tahoe mystery trans

    1998 tahoe 2 door. The rpo code says m30 and by my reaserch that is the early 4l60e and whats in there has no identifying marks but does look like a late 4l60 e from reading on novac trans swap. My 96 has the m30 tag on the side 4 bolts to the transfer case. The 98 has 6 another reason i belive...
  19. H

    96 vs 98 4l60e

    I have a 98 k1500 with a bad transmission. My question is will a 96 4l60e be plug and play with the exception of the transmission lines? If not, what else would be different?
  20. J

    Should I transfer OEM Trans Pan Magnet to new pan?

    Good-morning, Discarding my old 4L60E pan, and picked up one from LMC truck that has a drain plug, and the drain plug is magnetic. Should I transfer my old magnet out of OEM pan, to the new LMC pan, or is the magnetic drain plug enough for the need? thanks in advance.
  21. Glizzabeth_K1500

    I know, data stream. Long time lurk

    Scroll to bottom for the questions and to skip the foreplay/self publication 1996 k1500 5.7 4l60e CAI, dual in dual out exhaust, fresh ignition system (msd wires, Ac Delco 41-993 Spark plugs, all new billet msd distributer and gear. And accel<- ignition coil...which was maybe a mistake) all a...
  22. OBS Oregon

    Transmission Rebuild Problem 97 GMC

    1997 GMC Sierra 4x4 - 5.7 with 4L60e 133000 miles. Trans started slipping, no Reverse and 3rd and 4th gears went out. Would not drive past 25-30 miles per hour. Sent to reputable trans shop with 30years experience. They rebuilt the trans with Corvett 2-4 servo, high energy 2-4 bands, pump...
  23. A

    98 c1500 4l60e not working after 2 rebuilds

    I have a 1998 Chevy Silverado c1500 with the 305 engine and a 4l60e. About 2 my check engine came on saying “transmission component slipping.” I decided to take it to my mechanic and he told me I needed a rebuild after the rebuild the transmission worked okay except that when I would floor it...
    • Alchip
    • Thread
    • 1998 305 4l60e transfer case rebuild transmission problem
    • Replies: 15
    • Forum: Transmissions
  24. P

    Sk 4l60e kit installed lost automatic shifting.

    Hello everyone, I just installed the transgo shift kit today and now I seem to have lost the ability to shift automatically. If I start in 1st I can work my way up to drive, but I have to work my way back down too. I followed all the instructions and don't think I did anything wrong, all 7...
  25. T

    4L60E Questions…

    Hi everyone, I have a 1994 GMC K1500 with a TBI (obviously) 350 and a 4L60E. I’m currently in the process of building and engine for it (new heads, intake, carb swapped, bigger cam, etc…) My question is, how do I control the transmission (like kickdown and torque converter lock etc..)...

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