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4l60e

  1. OEM Issues
    I've noticed a very damaging like-sound come from my truck recently, it sounds terrible! I have the 4l60e, it sounds as if the transmission is just grinding on the gear to shift, it'll make a terrible grinding noise when trying to shift from 1st to 2nd and then 2nd to 3rd. I dont know what it...
  2. OEM Issues
    Pulling my trans on my 03 trailblazer 4x4. I can’t get the cross member out, on the passenger side, by the fuel tank there is a black box that keeps me from removing one of the through bolts on the crossmember. The bolt is too long to pull out with that black box in the way. I can’t figure out...
  3. OEM Issues
    Long story short woke to go to work Shifted to reverse heard a POP, shut off car immediately to verify leaking fluid, restart car shift in reverse. I hear whirling but not moving. low and behold sun shell its a 2002 Trailblazer LTZ with the 4x4 switch My Questions are for that year (2002) i've...
  4. OEM Issues
    Hey guys, was camping over 4th of July weekend. 2003 Trailblazer LTZ 4.2l 4x4 On the way back into town, only about 20 miles from home, I noticed that while in overdrive, my RPM kept bouncing between 2000-2200 while cruising at 55. So I kicked it into third and it was fine. Then, coming back...
  5. Transmission Mods
    My 2002 GMC Envoy 4.2 is suddenly not shifting beyond 2nd gear. I've read some threads here which state this may be a problem with a bad solenoid. Took the vehicle to a tranny specialist yesterday. Of course they want to install one of their factory rebuilt transmissions for approx $2500. I...
  6. Transmission Mods
    I have an 04 TB LS 2wd with a 4.2 and the transmission pump went bad, I bought a used one and installed it and it never moved, took it to a tranny guy and he said that the s10 tranny and the trailblazer tranny weren't the same and that the trailblazer 4l60e had a longer input shaft on it so I...
  7. Transmission Mods
    Hi all, Good news for me today is that my local transmission shop ran some diagnostics on my sloppy/soft shifting 4L60-E, and recommended simply upgrading the 2-4 Band Apply Servo to a "Corvette Servo" rather than getting into the valve body (or worse). I'd read (at Sonnax) about a newer...
  8. OEM Issues
    I'm trying to figure out a transmission problem on a 2005 Rainier with the 5.3l engine and 4L60E transmission (100,000 miles). Second and fourth gear do not work, but the truck can shift into reverse, first and third. No error codes. I have been thinking the 2-4 band could be worn, or a problem...
  9. TrailBlazer / Envoy Chat
    -------------------------------------------------------------------------------- hey guys so here is my intro i am a new father as of march 8th 2011 to a babygirl and am very happy to bring her home in my trailblazer 4l60e. but apperantly i was a lil to happy a few days ago. one morning at the...
  10. 4L60E Valve Body upgrades

    4L60E Valve Body upgrades

    Installing a Sonnax piston/accumulator upgrade kit, and a transgo SK-4L60E shift kit. Removed all the guts from the body to thoroughly clean it while it was apart.
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