I bought it used, and have not had it on the road. The main problems are the rapid wear and tear of the converter lock. 4L60E no 3rd/4th gear. I'm having a real nightmare with a 4L60E in my 94 Jimmy (4.3L vortec, 2WD). At the beginning, it was shifting into third, would rev up to about 4000 revs, and then lock into gear and proceed as normal. Adding Fluid did not fix the problem. I have a 2004 GMC Z71 w/5.3, 4L60E. Take care not to burn up the transmission by running it hard while your in the limp mode. Fluid was dark, and smelled bad. Common 4l60e Transmission Problems Below is a partial list of some of the most common 4L60E transmission problems: Slipping, Slow or No Reverse Available Many owners find that the “lo-reverse” clutches are beat up or worn out. Smooth changes, no noise, just right. Then it would start to slip in Overdrive. Both the 4L60E and 4L60 have the same number of gear ratios as well as the same number of gears. 4l60e I did unplug trans connector and drove, did move, but don't know if it was 2nd or 3rd. Trans seemed to slip or no 4th. And when going down the road at about 40 and try to shift manually in 3rd still nothing just revs up. I have replaced 1-2, and 2-3 solenoids, no difference. Your going to have to get the truck scanned to clear any codes and why there are DTC codes. Sudden 4L60E Slip in 3rd – 4th? Had to press hard on gas, so I think it was 3rd. Articles ... Got to a faster road, shifted to 4th. I just bought a used trans from someone it had 189xxx miles on it and it won't shift past 2nd in od. SOURCE: 4L60E Shifts fine in 1st, 2nd, & 3rd but will not shift into OD The EMC detected and problem so it's in limp mode, As long as it's in limp mode the 4th and OD will not activate. 3 most common problems found in a GM 4L60E transmission; 3-4 Clutch Pack Failure, Broken Drive Shell, Worn TCC Regulator Valve are discussed. Here, the torque converter operates in an unusually stressful mode, disperse the powerful machine by locking … Here are 3 symptoms of a failing 4L60E transmission and how to diagnose the problems: No Third Gear – You put the vehicle in drive, start off the transmission, and shift to second gear. I have a 1993 k1500 4x4. Replaced the tranny (4l60e) with a 94 4l60e and now 1-2 shift little hard but ok 3-4 shift perfect but does not shift to OD no matter speed or throttle. Pan had dark "film" , no chunks or silver pieces . Basically its a recon trans & TC 30,000 miles ago & has always been smooth. Its friction wear products clog the solenoids as well as the hydro block channels. Tranny shifts past 2nd into an abyss.Engine revs but no 3rd. General Tech - 4L60E Question - suddenly lost 3/4 Gears - Just did a rebuild on a 4L60E transmission. 4L60E no 3rd/4th gear Project Cars; Features. About 4 … New filter & fluid a couple of weeks ago, recently been on a few long journeys without a problem, and now its just lost 3rd & 4th. Shift to 3rd, no 3rd. To read the extended list of the top 30 4L60E Transmission Problems and Repair … Will manual shift 1,2, … read more Then, suddenly, I lost third and fourth gear. And here it is, the short list of common problems with the 4L60E Transmission and repair: 1) Slow, slipping or no reverse 2) Shifting is delayed 3) Loud bang or grinding noises 4) Loss of all gears. (my first) It worked great for four days, had all gears, shifted at proper RPM/Speed, and all seemed great. 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