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Dec 15, 2017 | 01:06 PM

danielallen

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4l80e

1997 chevy 3500 with the 4l80e trans just rebuilt ...drove it for 2 weeks before it lost all gears...checked fluid all good but if I shut the truck off and back on I regain all gears

Last edited by danielallen; Dec 15, 2017 at 01:09 PM. Reason: add more

Dec 15, 2017 | 05:25 PM

clinebarger

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From: Fort Worth, Texas

Change the filter, Use ONLY OEM Filtran filters. They are available though GM dealers & Isuzu Commercial truck dealers.

"IF" the filter is the issue, One of three things is going on.......
-The filter is clogged with debris....In this case the pan will be full of debris & you need to contact your builder.
-The filter is a aftermarket POS.
-The builder used WAY to much assembly lube or an assembly lube not made for transmission assembly.

Dec 15, 2017 | 07:16 PM

danielallen

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changed the filter didn't see anything in the pan a transmission guy said he never heard of it before ...he told me to change the speed sencer ,

Dec 16, 2017 | 06:17 PM

clinebarger

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"lost all gears" to me means it won't move at all......Is that the case? Or does it not shift?

Dec 16, 2017 | 08:29 PM

danielallen

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ya same thin g change the speed sencer and now I lost all gears

Dec 16, 2017 | 08:33 PM

Jays_SSZ28

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You can provide more information.

Like "trans just rebuilt" but has no warranty, you could explain how that worked out.

Dec 17, 2017 | 09:30 AM

danielallen

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the transmission was just rebuilt ,has no warranty,i drove it for two weeks and it shifted fine.one my way home the other day it shifted to second gear so I let of the gas..try to push the gas gas again and had no gears ..I pulled over and shut the truck off and back on and the gears came back..the next day I pulled the pan and there was nothing in the pan and filter was clean its a 97 chevy 3500 ...no dash lights on

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Dec 17, 2017 | 11:14 AM

danielallen

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no codes in the the computer ,no movement at all ....fells like its not engaging at all.it made no noise when I lost them and the trans fluid it looks clean and don't smell burnt ..

Dec 17, 2017 | 11:40 AM

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01ssreda4

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From: Turnin' Wrenches Infractions: 005

So everything is like neutral?

Dec 17, 2017 | 12:33 PM

#11

danielallen

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ya it fells like everything is in neutral ,move throw the gears and it feels like its not engaging ..its weird drove fine for two weeks then started this..

Dec 17, 2017 | 01:37 PM

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Jays_SSZ28

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Must be a budget rebuild to not have a warranty. I'd take it back to whoever rebuilt it.

Theres a long list of things that can cause this. I'm not typing it all out.

Dec 17, 2017 | 01:48 PM

#13

Jays_SSZ28

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Quote:

Originally Posted by danielallen

ya same thin g change the speed sencer and now I lost all gears

Did the speed sensor get changed? How about the wiring to it, could also be a wiring problem.

Dec 17, 2017 | 02:05 PM

#14

Jays_SSZ28

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Check the ground wiring.
Are you willing to put a pressure gauge on this?
It really sounds like you're not into screwing with it, might be better to take it to a shop.

Dec 17, 2017 | 05:14 PM

#15

brandon6.0

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From: Glennville, GA.

Check trans power fuse for power.

Dec 18, 2017 | 09:16 AM

#16

bbond105

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Even without power or a ground to the trans shouldn’t the truck at least move in reverse and forward unless there is a mechanical problem?

Dec 18, 2017 | 09:22 AM

#17

JoeNova

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Quote:

Originally Posted by bbond105

Even without power or a ground to the trans shouldn’t the truck at least move in reverse and forward unless there is a mechanical problem?

Yes, when you put the shifter in gear on an 80e and it doesn't have power (neither solenoid is on), it will only have 2nd gear.

Dec 18, 2017 | 10:52 AM

#18

Jays_SSZ28

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Quote:

Originally Posted by bbond105

Even without power or a ground to the trans shouldn’t the truck at least move in reverse and forward unless there is a mechanical problem?

Forgot about that.

The last 4L80E I built for a guy at work still had the same problems.
He found out a previous owner hacked up the wiring harness for the entire truck, he replaced it all and had no further problems.

I was 100% sure there was nothing wrong with my build.