GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

4L60 not shifting after rear main

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Old Jan 11, 2022 | 11:10 AM
  #11  
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Sheesh bro a brother can't have questions on a public forum? That's crazy

My bad that after I bolted the trans to the engine I was moving the harness around. Hence why I said I didn't think it was that but I'd still check

My bad that I don't know how the stalk works. ****** retard

Anyways back to another question, when you say "The further you pull down on the stalk" do you mean like say I shifted from drive to 3rd, 2nd, 1st I could have thrown myself off target? And then doing that cycling more and more can continue to move me away?
You are also talking about the selector on the left side of the trans correct? I think I understand what you are saying now though unless the answers to the above two questions are no
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Old Jan 11, 2022 | 11:14 AM
  #12  
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Quick question have you checked the fluid since you lost the gears? Is it suddenly black and burnt smelling?
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Old Jan 11, 2022 | 11:19 AM
  #13  
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I was thinking about that when I got to work today. Whenever I pulled the dipstick the other day to add trans fluid it seemed pink or bright red but it seemed to shift fine then but that isn't the best check.
I will check the fluid when I get home and see what it looks/smells like
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Old Jan 11, 2022 | 11:25 AM
  #14  
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Originally Posted by shakenfake
Sheesh bro a brother can't have questions on a public forum? That's crazy

My bad that after I bolted the trans to the engine I was moving the harness around. Hence why I said I didn't think it was that but I'd still check

My bad that I don't know how the stalk works. ****** retard

Anyways back to another question, when you say "The further you pull down on the stalk" do you mean like say I shifted from drive to 3rd, 2nd, 1st I could have thrown myself off target? And then doing that cycling more and more can continue to move me away?
You are also talking about the selector on the left side of the trans correct? I think I understand what you are saying now though unless the answers to the above two questions are no
Calm thy chesticles youngin. Replies like this are why I called you out on being combative. Don't be sarcastic in one post then get your chestes wounded in the next. Its the internet, not that serious, amirite?

AnYwAy:

Stalk= gear handle on column
Shift selector/switch= left side of trans
Target= intended gear you want, IE "D" which is really "OD"

I know for a 93.3333% certainty that the shift selector does not move in a 1:1 ratio with the stalk. IE, P, R and N work because they are closer to the beginning of the travel, the further PRND321 positions get out of position because of the non-linear ratio

Granted, this is simply a theory. Much like my harness suggestion. The trans never came out of the truck per your own admission, so we can reasonably assume its not a mechanical issue. If the same TC and flywheel were used its not likely a TC spacing issue

It could be a damaged pump if the TC wasn't seated properly and you torqued the engine and trans together without enough spit. But I am going to assume that is not the case because you have 1 and 2, per your own admission

Lots of assuming happening here, but hey- its the internet, amirite?
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Old Jan 11, 2022 | 11:45 AM
  #15  
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Originally Posted by arthursc2
Calm thy chesticles youngin. Replies like this are why I called you out on being combative. Don't be sarcastic in one post then get your chestes wounded in the next. Its the internet, not that serious, amirite?

AnYwAy:

Stalk= gear handle on column
Shift selector/switch= left side of trans
Target= intended gear you want, IE "D" which is really "OD"

I know for a 93.3333% certainty that the shift selector does not move in a 1:1 ratio with the stalk. IE, P, R and N work because they are closer to the beginning of the travel, the further PRND321 positions get out of position because of the non-linear ratio

Granted, this is simply a theory. Much like my harness suggestion. The trans never came out of the truck per your own admission, so we can reasonably assume its not a mechanical issue. If the same TC and flywheel were used its not likely a TC spacing issue

It could be a damaged pump if the TC wasn't seated properly and you torqued the engine and trans together without enough spit. But I am going to assume that is not the case because you have 1 and 2, per your own admission

Lots of assuming happening here, but hey- its the internet, amirite?
Well that would make some sense I think.
Yeah never took the trans out completely. Same TC and flex plate


I'll check the fluid tonight and see what is what.
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Old Jan 11, 2022 | 01:39 PM
  #16  
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You 're not in tow mode are you?

Make sure the PRNDL switch didn't get damaged or knocked out of sync by the weight of the transmission.
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Old Jan 11, 2022 | 01:44 PM
  #17  
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That was the first thing I thought was damn am I in tow mode? haha but that would still shift. I basically get to like 5K RPMs and hang there no matter what I do.

Yeah I'll be looking over that **** tonight.
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Old Jan 11, 2022 | 01:46 PM
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So it's not even attempting to shift? The two speed 60e I messed with earlier this year would try to go into 3rd or 4th slip terribly then drop back down into second. It would attempt that shift at regular shift rpms like 3k.
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Old Jan 11, 2022 | 01:53 PM
  #19  
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I’ll take a video on my way home. Maybe I am explaining improperly so this way I can cut confusion.
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Old Jan 11, 2022 | 02:00 PM
  #20  
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Get the truck (safely with stands) in the air. With engine off... watch the PRNDL switch as a helper calls out the gears selected and see if the switch has full range of motion.

There is a PID in HP Tuners scanner that will show actual gear the trans is in and also the gear selected. If you can't find any wiring or mechanical issues in the PRNDL switch add those PID's to the scanner and take a short drive to get a log. If the PCM is commanding 3rd and overdrive and you're still having issues it may be internal.
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