4L60E Question - suddenly lost 3/4 Gears
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Joined: Mar 2018
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No 3rd or 4th gear though. Any ideas?
No CEL either.
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Joined: Mar 2018
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Hey I am having the same thing , I think. my 2006 gmc seirra will drive in reverse, 1 and 2. 3rd and drive it just revs up , fluid looks good. It will fall out of gear shifting into 3rd. no check engine light on. it is droping hard when I put it in reverse though. and I did not have any issues before . it sliped out once when I punched it and the next day did the same thing and then went to doing this.What do you think
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Joined: Jul 2018
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Probably needs overhaul. In 3rd and 4th gear the 3/4 frictions are applied. They are the same part. They are applied for 3rd and 4th gears. It won't be a shift solenoid. If you pull the fuse for the transmission you should have third gear only. ( in 3rd gear both solenoids are off). So, pull the fuse, if no move, 3rd gear frictions internally are smoked.
I am having almost the same issues on my 2007 Chevy Avalanche. It has 158,000 miles on it. Was driving perfectly fine. I stopped, got out. Got back in, started and nothing. I have reverse but would not engage D or 3. Had to drive it back home in 2. Now if I go anywhere, I have to manual shift it starting in 1 and working my way back to D. Once in 3 or D, it drives fine. If I come to a stop. I have to start all over again from 1. Also, if I try and give it too much gas in 1 or 2, it make a horrible ( almost rubbing ) sound from the tranny or rear end. Also, I have NO check engine light on. Do you think its the A and B solenoids, whole valve body, speed sensor, or something else?
Just did a rebuild on a 4L60E transmission. (my first)
It worked great for four days, had all gears, shifted at proper RPM/Speed, and all seemed great.
Then, suddenly, I lost third and fourth gear. There was no slipping or other indication of a problem, and it still doesn't feel like a slip, it feels like it shifts into neutral instead.
Manually shifting doesn't make any difference.
Since I reused the old solenoids, it it likely that the 3/4 solenoid has failed?
If it worked fine for four days does that make it unlikely that I got a check ball in the wrong place?
I did check the transmission fuse and it is fine and the fluid level is fine/no leaks.
I know I can change the solenoids with the Tranny in the truck, so I'm hoping not to have to drop the whole Tranny/Xfer case again. Are there any other likely suspects? Anything else I can check?
I also know how to Ohm out the solenoids and how to apply 12V to test them out of the tranny, but is there a way to test them without dropping the pan? I don't have a scanner, but maybe a way to feed 12V to the solenoid lead and listen for the click? I have to dump 6 quarts of new tranny fluid down the drain.
Thanks very much for any advice or suggestions.
It worked great for four days, had all gears, shifted at proper RPM/Speed, and all seemed great.
Then, suddenly, I lost third and fourth gear. There was no slipping or other indication of a problem, and it still doesn't feel like a slip, it feels like it shifts into neutral instead.
Manually shifting doesn't make any difference.
Since I reused the old solenoids, it it likely that the 3/4 solenoid has failed?
If it worked fine for four days does that make it unlikely that I got a check ball in the wrong place?
I did check the transmission fuse and it is fine and the fluid level is fine/no leaks.
I know I can change the solenoids with the Tranny in the truck, so I'm hoping not to have to drop the whole Tranny/Xfer case again. Are there any other likely suspects? Anything else I can check?
I also know how to Ohm out the solenoids and how to apply 12V to test them out of the tranny, but is there a way to test them without dropping the pan? I don't have a scanner, but maybe a way to feed 12V to the solenoid lead and listen for the click? I have to dump 6 quarts of new tranny fluid down the drain.
Thanks very much for any advice or suggestions.
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Joined: Nov 2014
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Found this grounding hot wire, no 3 4 gears or code, I think it gets kick to limp
Last edited by tinybird; Apr 2, 2020 at 5:50 AM. Reason: Not fixed, still trying
CF Beginner
Joined: May 2021
Posts: 1
Likes: 1
Just did a rebuild on a 4L60E transmission. (my first)
It worked great for four days, had all gears, shifted at proper RPM/Speed, and all seemed great.
Then, suddenly, I lost third and fourth gear. There was no slipping or other indication of a problem, and it still doesn't feel like a slip, it feels like it shifts into neutral instead.
Manually shifting doesn't make any difference.
Since I reused the old solenoids, it it likely that the 3/4 solenoid has failed?
If it worked fine for four days does that make it unlikely that I got a check ball in the wrong place?
I did check the transmission fuse and it is fine and the fluid level is fine/no leaks.
I know I can change the solenoids with the Tranny in the truck, so I'm hoping not to have to drop the whole Tranny/Xfer case again. Are there any other likely suspects? Anything else I can check?
I also know how to Ohm out the solenoids and how to apply 12V to test them out of the tranny, but is there a way to test them without dropping the pan? I don't have a scanner, but maybe a way to feed 12V to the solenoid lead and listen for the click? I have to dump 6 quarts of new tranny fluid down the drain.
Thanks very much for any advice or suggestions.
It worked great for four days, had all gears, shifted at proper RPM/Speed, and all seemed great.
Then, suddenly, I lost third and fourth gear. There was no slipping or other indication of a problem, and it still doesn't feel like a slip, it feels like it shifts into neutral instead.
Manually shifting doesn't make any difference.
Since I reused the old solenoids, it it likely that the 3/4 solenoid has failed?
If it worked fine for four days does that make it unlikely that I got a check ball in the wrong place?
I did check the transmission fuse and it is fine and the fluid level is fine/no leaks.
I know I can change the solenoids with the Tranny in the truck, so I'm hoping not to have to drop the whole Tranny/Xfer case again. Are there any other likely suspects? Anything else I can check?
I also know how to Ohm out the solenoids and how to apply 12V to test them out of the tranny, but is there a way to test them without dropping the pan? I don't have a scanner, but maybe a way to feed 12V to the solenoid lead and listen for the click? I have to dump 6 quarts of new tranny fluid down the drain.
Thanks very much for any advice or suggestions.
changed solenoids made no difference. Was driving fine then lost 3rd and 4th out of no where. It throws in neutral and red lines. If I redline all the way, itll finally shift into 3rd redline then shift into 4th while in drive. I tested the theory once. If I manual shift, itll go into 1st and 2nd fine. I have reverse as well. Hoping to find a in expensive fix... and really trying not to change out the trans. Fluid is clear and clean and free of leaks, filter was changed when I did the solenoids. Fuses are fine. .... do I really need to replace the trans or is there something I'm missing that I could try/do instead?
CF Beginner
Joined: May 2021
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Just did a rebuild on a 4L60E transmission. (my first)
It worked great for four days, had all gears, shifted at proper RPM/Speed, and all seemed great.
Then, suddenly, I lost third and fourth gear. There was no slipping or other indication of a problem, and it still doesn't feel like a slip, it feels like it shifts into neutral instead.
Manually shifting doesn't make any difference.
Since I reused the old solenoids, it it likely that the 3/4 solenoid has failed?
If it worked fine for four days does that make it unlikely that I got a check ball in the wrong place?
I did check the transmission fuse and it is fine and the fluid level is fine/no leaks.
I know I can change the solenoids with the Tranny in the truck, so I'm hoping not to have to drop the whole Tranny/Xfer case again. Are there any other likely suspects? Anything else I can check?
I also know how to Ohm out the solenoids and how to apply 12V to test them out of the tranny, but is there a way to test them without dropping the pan? I don't have a scanner, but maybe a way to feed 12V to the solenoid lead and listen for the click? I have to dump 6 quarts of new tranny fluid down the drain.
Thanks very much for any advice or suggestions.
It worked great for four days, had all gears, shifted at proper RPM/Speed, and all seemed great.
Then, suddenly, I lost third and fourth gear. There was no slipping or other indication of a problem, and it still doesn't feel like a slip, it feels like it shifts into neutral instead.
Manually shifting doesn't make any difference.
Since I reused the old solenoids, it it likely that the 3/4 solenoid has failed?
If it worked fine for four days does that make it unlikely that I got a check ball in the wrong place?
I did check the transmission fuse and it is fine and the fluid level is fine/no leaks.
I know I can change the solenoids with the Tranny in the truck, so I'm hoping not to have to drop the whole Tranny/Xfer case again. Are there any other likely suspects? Anything else I can check?
I also know how to Ohm out the solenoids and how to apply 12V to test them out of the tranny, but is there a way to test them without dropping the pan? I don't have a scanner, but maybe a way to feed 12V to the solenoid lead and listen for the click? I have to dump 6 quarts of new tranny fluid down the drain.
Thanks very much for any advice or suggestions.
there is a check ball in these suckers that Han get stuck and burn out I think the band? Or the 34 clutch pack, I don’t remember which.
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Joined: Sep 2021
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Ignition
Hey I am having the same thing , I think. my 2006 gmc seirra will drive in reverse, 1 and 2. 3rd and drive it just revs up , fluid looks good. It will fall out of gear shifting into 3rd. no check engine light on. it is droping hard when I put it in reverse though. and I did not have any issues before . it sliped out once when I punched it and the next day did the same thing and then went to doing this.What do you think
Had similar issue with my 80E.
2 things.
1 bad ignition module in column2 clogged cats.
4th would drop out, reverse would bang
Replaced transmission & same things happened. Ended up being ignition module wasn't sending the right signals.
CF Beginner
Joined: Oct 2021
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From: MN
When talking solenoids in the 4L60E there are more than two. If you get on Amazon put in 4L60E solenoid with harness it'll be just under a hundred bucks you can drained ATF drop the pan they're all right there super easy to do along with that you can do the throttle position sensor on the side of the throttle body and the pedal position sensor at the top of your accelerator pedal. Any of these can fix the problem but chances are your three four clutch packs are burned out probably your piston as well and it needs rebuilt. But replacing everything else I mentioned is not a bad thing if you're going to rebuild the transmission if you're going to get a used one and throw it in or a new one and throw it in no need, what ever you decide good luck to you and please let me know what the solution is.
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Joined: Jan 2022
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I'm having the same problem. I have spent a lot of time and money trying to figure out the 3-4 gear issue before I replace transmission. I know that if one of the solenoids goes out its best to replace both as the other usually follows. I have replaced my solenoids , changed fluid/filter as recommended using the SeaFoam transmission additive, which worked great but would not recommend it when adding your new fluid as it does an excellent job of cleaning out gunk and within days I had to do it all again. Also did the Chevron w/ Techron fuel treatment, which seemed to have an immediate effect as far as getting a little more power and lowering my RPMS while driving. My 02 sensors were also an issue causing my PCM to code and they were then replaced. Previous to this I had new universal cats put on, make sure they fit correctly as this will throw codes, too. There were no metal shavings/ debris in either tranny fluid changes. After resetting the PCM several times I'm still throwing codes with the 02 sensors. My SUV was originally in limp mode, after replacing cats it seemed to go out of limp mode where I was able to do a hard shift making it shift into 3 rd by taking OD off sometimes going back and fourth. Torque converter checked out to be fine, checked throttle body, clutch cables, other solenoids, fuses, and still I have problems going into 3 rd or 4 th gears. With OD on I can get into 3 rd but I can't heavy accelerate into 3 rd, if I want 4 th I have to take OD off. I went thru the wiring harness(s) which seemed to be fine. Finally, I've been told by another mechanic, that common issues for the 4L60e are as follows :
TPS leak - check the servo assembly or the 1-2 accumulator
Also check the TPS for smooth linear response over entire range of motion
Shift A & B solenoids and wiring issues ,as I stated above
Wiring from PCM to Trans and Trans back to PCM
Make sure 02 sensors wiring is NOT touching exhaust
Clogged valves
TCC Solenoid also check wiring
Do this with the VSS also
WORST CASE PUMP FAILURE TRANSMISSION OR THE DREADED 3-4 IS OUT AND REBUILD IS NEEDED....
If I confused you or was not clear , I'm a new not by choice up and coming home mechanic. This was 2 solid months of research, trial and error, mechanics advise, and determination . Hope any if at all helped to at least find out a simple non expensive solution can be made before worst case senario.
TPS leak - check the servo assembly or the 1-2 accumulator
Also check the TPS for smooth linear response over entire range of motion
Shift A & B solenoids and wiring issues ,as I stated above
Wiring from PCM to Trans and Trans back to PCM
Make sure 02 sensors wiring is NOT touching exhaust
Clogged valves
TCC Solenoid also check wiring
Do this with the VSS also
WORST CASE PUMP FAILURE TRANSMISSION OR THE DREADED 3-4 IS OUT AND REBUILD IS NEEDED....
If I confused you or was not clear , I'm a new not by choice up and coming home mechanic. This was 2 solid months of research, trial and error, mechanics advise, and determination . Hope any if at all helped to at least find out a simple non expensive solution can be made before worst case senario.
