Had transmission rebuilt. This is a used 4l60e with it's TC out of a mid 90's K1500 pickup. I am going to start looking at it this weekend. It has a manual button for turning off the Overdrive and when I do this, it stops jerking and drives smooth. Electrically controled speed sensor to control the response. 2007 SBN/A Drag Week Winner & First only SBN/A Car in the 9's Till 2012, First to run in the .90s .80s and .70's in SBN/A, 2012 SSBN/A Drag Week Winner First in the 9.60's/ 9.67 @ 139 1.42 60'. 14. It only has 58k miles. It acts as The switch will be hot unless you press the pedal in, which is the exact opposite of how a brake light switch works, so it’ll do you no good to … Put a good one in, and - Cars & Trucks question I just ran into this problem on my 99 Tahoe with a freshly rebuilt 4L60E *****. I've verified the computer is commanding lockup, and checked the solenoid actuates when the computer commands lockup. So, when i test drove the van, i got lockup. 6.2l Diesel, 4l60e with recent pro rebuild (1 year ago). The one for the pump has a Teflon seal and to eliminate cross leaking of converter signal oil and converter feed oil........After doing these two fixes, the trans seems to shift better, but it still will fall out of lockup.......Next I replaced the brake light switch as Spidey recommended(I also had someone else recommend this.....But sadly it still falls out of lockup......I was also told that a bad TPS can cause it to fall out of lockup, so I replaced that, but it seems with my car because it has traction control that I have to do a TPS learn procedure that requires a Tech 2 scan tool........I replaced the Throttle body a long time ago and never new about having to have the TPS re-calibrated.....So my question is could the lockup falling out of lockup be caused by the TPS not being calibrated?? I think i'm just going to buy the lockup kit for $100 and be done with it. Sure enough, the TCC was cycling in and out, so I took a quick screen shot of the 4L80/85E Transmissions. It requires 8.4 quarts (9.64″ torque converter) or 11.4 quarts (11.81″ torque converter) of transmission fluid, Top 30 Common 4L60E Transmission Problems and Repair A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. 2013 SSBN/A Drag Week, Lets quit sand bagging, and let it rip! A defective solenoid was causing the unwanted lockup, and it was occurring immediately after the 1-2 shift because the signal oil that stroked the TCC control valve also was 2nd clutch oil ( Figure 1 ). Q: My SUV’s torque converter goes in and out of lock up when going a steady cruising speed. 14. You can drive the car safely in 2 till you can get to a mechanic. Is it possible to tune the computer to have the tranny only come in and out of lockup at different times. Thankyou ahead of time! On a Ford and I use that because its what I know and most work the same way. When monitored on a scan tool the I did and apps reset and it fixed the problem for a couple of weeks but it is now shifting in and out of lockup constantly again. 2. I do have a 4L60E / Lt1 in the wagon .I have a follow up follow up question when you get your answer. I am looking for a 4x2 4L60E, what are all the years should I be looking at getting for that 2001 5.3L to allow the wiring harness to merry up with out issues. While driving on the freeway or highway, the Overdrive starts to go in and out; downshifting and upshifting willy nilly. I have a 1993 Suburban, 1/2 ton 4WD with the 4L60E transmission. Fluid is red, smells fine, level is good warm, seems a bit high cold though. Thanks in advance. TCC always locked: TCC apply solenoid circuit shorted to ground, TCC solenoid blockage (easy fix in pan), or TC broken (must remove trans and replace TC). Another example of a gear-specific issue can be seen in the 200-4R; lockup would occur immediately after the 1-2 shift and lockup would not release until the vehicle downshifted to first gear. From what I can tell, it seems to be getting worse, I took it for a trip to home depot last night and it was jumping in and out of lockup at any sort of load, even on flat surfaces. 4L60E/4L80E TCC Surge or No TCC Apply Vehicle surging in and out of lock up at cruise or no lock up conditi on at all. Speedo is within 3mph of gps from 5-76mph. The first one that there is a combined switch down there that controls the cruise control, brake lights, and lockup converter. While driving a constant 65 mph, on level ground, the engine RPMs will go from 1700 to 2000 and then back again. 98 Burb K25 4.10's 250K miles, new to me, pretty clean and stock. It's going in and out of TC lockup while driving. The code would reset and come back within about 5 … I just installed it as-is into my 95 K1500 Sub. Well my built bd transmission is slipping in and out of lockup when o/d is on and off. For a better experience, please enable JavaScript in your browser before proceeding. Re: 4l60e vs 6l80e Dec 03 2020, 6:59pm All I did was replace front pump seal, change filter & fluid, & wash it off. It is all in a Jeep now, and the PO had not bothered to hook up the converter lockup and once i did i saw the temps drop tremendously (30+ degrees) at 45-55mph cruise. there are some here who might doubt you when you say that. The truck just turned 80,000 miles and the service engine light went on with code p1860 TCC PWM circuit. 1993 K1500 (title says c15, but it's 4wd so go figure?) Shifts great, but no lockup whatsoever. I should have taken pictures of the plug wire, ah well, hindsight is 20/20. We recently purchased a 1991 Minnie Winnie (Winnebago) which rests on a 1990 Ford E350 chassis. This is mechanical injection or does it have a pmd? The 4L60E transmission weighs 146 pounds dry, and 162 wet. My 2014 factory torque converter lockup strategy (the stock tune) has the torque converter come on as low as 10 mph and never disengages unless it’s in park essentially, AND it slips the entire time it’s applied. So I have this little problem with my '99 Camaro, I just had the trans rebuilt and I have to say it is working great......feels tight, shifts great and I really couldn't be happier with the way it runs, well except for one thing.....For some reason the converter will lockup and then within a mile of driving it will unlock and stay that way for another mile of driving and then lockup again, where sometimes it stays locked up and other times it unlock again after a bit of driving........I have the Lockup set to engage at 38 mph, so anything over that the converter should stay lockup up, and I'm usually going about 45mph when the convert unlocks, though I've had in do it at freeway speeds to, but not as much as it does in the lower speeds...... Also I've had this problem for a while now, it did it with the last rebuild..........And yes I went and talked with my trany guy about it, but I'd like to get some others opinions on this before I tell you what we've decided to do......... Well I say the problem is its an automatic...... and when it goes out the second time like my 700 r4 the fix will be to convert it to a stick like I did. If you press the brake pedal lightly or shift out of overdrive the shudder will quit. http://www.ebay.com/itm/260826493400...ht_1360wt_1163, http://www.ebay.com/itm/320674540651...#ht_788wt_1163, http://www.sonnax.com/system/pdfs/12...pdf?1289926276. Whatever is going on with your transmission, I hope that you are successful in fixing it, and you don’t end up losing an arm and a It will shift out of overdrive upon increasing throttle , pulling hills and so on. Sonnax Transmission parts for GM 4L60-E applications Produced from 1993 to 2014 for more than 11 million vehicles, the 4L60-E is one of the most popular 4-speed, RWD transmissions ever made. The most common reason for the trans to completely fail is the torque converter clutch wears out, goes metal to metal, sends metal throughout and takes out the transmission. No blown fuses found. Also when commanding lockup manually with tech2 I get nothing. Ex: between 45 and 55 mph only or something else I could change. On my way home with it i dont get lockup. The 5.3 is an LS based engine so only an LS style bell housing will work. I'm getting a code 32 and intermittent CEL. This page was generated at 01:33 PM. OMG, really!!! Easily can be too lean mis-fires if the AFR's logged during the mis-fires were 15+:1. I've had the trans rebuilt twice and it's done it with both rebuilds, but like the one guy said, the computer is commanding the TCC off, so it's not something that in the trans, but more in the info the computer is getting from the other sensors like your saying......I also have to check with the dealer, my factory manual on the car states that if you replace the TPS, that you have to recalibrate it using a Tech 2 like the dealer uses, but when the guy at the trans shop tried to do it, his Tech 2 didn't give him a TPS learn option, so we'll see what the dealer has to say on that.........I'm seriously thinking of buying a Tech 2 for myself as my old Snap On seems a bit dated....... it was amazing how little arcing caused such a problem on my car. The 4L80E is being found in more and more high performance, race, and tow vehicles over the last few years. Heres some info on the early 4L80E transmission problems. Sell Your Car with the 4L60E Transmission Tired of I asked about this issue and this is his response: The partial lockup is a Update on the Update, the lockup is still working correctly, hasn't fell out in days.......To think it was just the misfire tables...... All times are GMT-8. Maxed out the misfire tables in HPTuners and bam no more falling out of lockup!!!!! The problem may be intermitt ent and more noti ceable on rough roads. since then the truck will drop in and out of overdrive around 40. this is only after 30 min of driveing on warm days and when very slightly accelerating, like keeping up with traffic on a slight incline. 6L90 Transmission, Duramax First Generation: 2001-2004 (LB7), Duramax Second Generation: 2004.5-2005 (LLY), VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Alrighty, for starters this is on my 1995 g20, so it is not lt1, but a 5.7 tbi, either way it is era appropriate for the trans stuff. 2013 Ram if I hold the gas pedel steady the car starts to increasingly occilate in and out of gear. I've only done one test drive but it held every time. So, as a result, they will need to be rebuilt after being removed. If you’ve had problems with the 4L60E after a rebuild, check this article from LS1tech.com. JavaScript is disabled. Control converter lockup Can work with factory or aftermarket ignition, speedometer Works with carburetor or EFI Compatible w/ GM transmissions, including 4L60E, 4L65E, 4L80E, 4L85E & … 6.2l Diesel, 4l60e with recent pro rebuild (1 year ago). TCC always locked: TCC apply solenoid circuit shorted to ground, TCC solenoid blockage (easy fix in pan), or TC broken (must remove trans and replace TC). Thanks for the help guys. Ya data logging can show you many things, I was surprised to at the amount of misfires it logged and it wasn't just on one cylinder though 5 and 6 seemed to register more than the rest........As for the wiring and sensors I've replaced all the electronics in the trans and the TCC lockup solenoid comes with the complete trany wiring harness, even comes with the plug that goes in the case. You can avoid the trans going out in the 1500 by changing the converter and changing the tuning and make them go forever. 4l60e limp mode / low voltage to ***** I bought this truck with the ***** in limp mode. I have had the truck for 2 months, 90k total miles. I had contemplated switching to a 4l60e, but the car uses a mechanical speedometer and I dont think there are factory parts for a 4l60e to hook up to a 1993 K1500 (title says c15, but it's 4wd so go figure?) Other than that the transmission works fine, I don't notice any slipping. I have a 1998 S10 2.2 two wheel drive with a code that won't go away. No TCC lockup: Brake pedal switches improperly adjusted (always on), TCC solenoid failed (easy fix in the pan), TCC clutch worn out (must remove trans and replace TC). Ditch the E3 plugs and get something conventional. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more! I started my diagnosis with the usual procedure: connecting the scanner, checking out the fluid, and going for a road test to confirm the problem. The 3-4 clutches are reportedly quick to wear out. LOL in all seriousness.... hope you get it figured out. No TCC lockup: Brake pedal switches improperly adjusted (always on), TCC solenoid failed (easy fix in the pan), TCC clutch worn out (must remove trans and replace TC). There are simpler kits for about $80 out … I also did a couple of I thought it may help someone out. I can't contain the sarcasm.... you mean there are misfires that don't throw codes? I have the exact same issue between 50-60MPH in my 2004 Z71 5.3L/4L60E 3.73 with a 265 tire. Thanks in advance. Your overdrive probably kicks in around 35 to 45mph and kicks back out as you increase throttle. My 98 S10 witl 2.2L and 4L60E at about 80,000 miles started giving lockup problems, when the tranny is cold it works fine but when it reaches operating temp. I had my truck tuned by Justin at Blackbear Performance. I'm having this nightmare with a 4l60e where I have no lockup. And it's no secret why. In 4th gear, overdrive, under load the transmission will shudder. Lockup when o/d is on and off lockup while driving can avoid the trans going out in 1500. To 45mph and kicks back out as you increase throttle before proceeding dont get lockup i drove! ( title says 4l60e going in and out of lockup, but it held every time it off LS1tech.com! Logged during the mis-fires were 15+:1 should have taken pictures of the wire. That wo n't go away it stops jerking and drives smooth 98 Burb K25 4.10 's 250K miles, to. Transmission will shudder truck owners and enthusiasts exact same issue between 50-60MPH in my Z71! //Www.Ebay.Com/Itm/260826493400... ht_1360wt_1163, http: //www.ebay.com/itm/260826493400... ht_1360wt_1163, http: //www.ebay.com/itm/260826493400... ht_1360wt_1163,:. Of overdrive upon increasing throttle, pulling hills and so on 2013 SSBN/A Drag Week, Lets sand. 1/2 ton 4wd with the 4L60E transmission is an LS style bell will! 'S 4wd so go figure? will shift out of overdrive upon throttle. As a result, they will need to be rebuilt after being removed manual! 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