4l60e

  1. 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..)...
  2. M

    Need help - 98 electrical problems and 4L60E transmission codes

    Hello everyone. We have a 1998 1500 5.7L 4L60E 2WD truck that we've had for about 10 years. In 2018, we put a remanufactured 4L60E (ordered from the dealer) in the the truck and then we ended up getting a new truck so we parked the 98 and hadn't touched it until now. So the transmission only had...
  3. wyn97

    '97 Vortec to Holley EFI

    I am eyeballing a future project involving a 4bbl L31 intake and a Holley Terminator 4bbl kit with transmission control, and even adding in the Holley ignition parts if I don't feel like integrating the Vortec distributor. That should take care of the engine and the transmission control. What I...
  4. S

    4l60e to nv3500

    I have a 98 k1500 with the vortec 350, I was wondering how hard and what I would all need to put a nv3500 in my truck? The nv3500 comes with the transfer case, my truck has 3.73 gears and the push button 4x4, thank you anything helps.
  5. T

    1994 c1500 No 4th gear?

    I purchased a rebuilt 4l60e and installed it myself. On initial notice of the new transmission it would shift into drive no problem. 1st to 2nd gear is beyond smooth and normal. Shifting into 3rd gear is also normal. When trying to shift into 4th gear I get to about 3500-3600rpms and it won’t...
  6. J

    Transmission advice

    Hey this is my first forum but I have a 99 k1500 classic so it’s pretty much a 98. I just lifted it and but 35s on it I pull trailers here and there but I’d eventually like to start taking it mudding. My problem is my 3-4 clutches went out in the tranny like many other 4l60s, should I replace it...
  7. red98

    98 K1500 4L60e interchangeability

    Hello, I have a 1998 K1500 5.7L Auto and I am trying to figure out which other 4L60es will swap into it. I work for a dealership and we have a 12491883 laying around, and I'm told if I can use it they'll get me a hefty employee discount as its been sitting here for years, but I'm having a hard...
  8. Slade

    Transmission won’t shift

    I have a 1995 gmc k1500. I had the 4l60e transmission rebuilt less than 1000 miles ago, but it’s sat for a year and a half. When I try to drive the truck the transmission won’t shift, and the gear indicator light comes on and off randomly. I replaced both the a and b shift solenoids because...
    • Slade
    • Thread
    • 4l60e not shifting transmission
    • Replies: 16
    • Forum: Transmissions
  9. A

    Trans slips a bit at start of 1st gear ONLY in 4x4 LOW

    I have a fairly recently rebuilt 4L60E transmission in my '97 K1500 with 4.3L v6 (4x4 floor shift). It works perfectly in 2WD and 4WD high. In 4x4 Low, from a start, 1st gear seems to slip quite a lot to about 2mph before engaging fully. Given that the trans works perfectly when the transfer...
  10. Adam snapp

    98 Gmc 4L60E troubles

    New to the forums, needing some help here, recently bought a 98 GMC K1500 Sierra SLT ext cab, 5.7L vortec. Have been chasing a gremlin with the trans so far, I know the Neutral Safety switch needs to be replaced as it doesn’t start in park only in neutral, kid I got it from said he burnt the...
  11. B

    4l60e desired shift times

    So im trying to figure out how i should tune my shift times. I have a 4l60e with a vette servo. I have my torque management reduced by 50 percent already. Could someone please tell me why the 3-4 shift times on the normal table are zeroed out. What should i set them to? Also why are the values...
    • bhm99
    • Thread
    • 4l60e gmt400 transmission truck
    • Replies: 4
    • Forum: Transmissions
  12. S

    4l60e Still Not Right After Rebuild - HELP PLEASE!!

    Hey guys, First post here, but have been reading the forums relentlessly trying to figure out what the hell is going on with my truck. If anyone has any advice, please don't hesitate to share. Thanks in advance. My truck: 1998 Chevrolet K1500 4WD 5.7l V8 260k miles About a month ago, I had my...
  13. 93 GT

    Possible 1-2 Shift Solenoid?

    In January I went on a 2,000 mile road trip (mostly freeway) in my 1993 GMC Yukon GT (automatic). Probably 100 miles before I got home, it started doing this thing where it wouldn't shift out of 1st unless I got the RPMs to at least 2500, let off the gas for a second, let it shift, and then I...
    • 93 GT
    • Thread
    • 1-2 soldenoid 4l60e solenoid sunshell tps transmission
    • Replies: 8
    • Forum: Transmissions
  14. 9

    1994 k2500 Overdrive Shutter

    Hey guys! Been having a weird issue with my truck that I'm having some problems figuring out. Basically, for about a year now I've been having this issue where in TC lockup in either 4th or 3rd gear if I give it any more than 1/4 throttle the truck will shake violently. You can see what it's...

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