No reverse.

ChevyTBLover

Original poster
Member
Nov 21, 2011
116
Get in my truck to go on break and I have no reverse. I've got everything else.. drive, 3, 2, & 1. but no reverse. Has anything like this happened to you guys before?:lipsrsealed::hissyfit:
 

The_Roadie

Lifetime VIP Donor
Member
Nov 19, 2011
9,957
Portland, OR
Mileage, maintenance history, and how old is the tranny fluid and did you check the level?
 

Wex

Member
Dec 4, 2011
124
When I change my fluid and the level is not high enough, I sometimes lose reverse.
 

RayVoy

Member
Nov 20, 2011
939
Yep, x3 on checking the fluid level, loosing a gear is usually a sign of low fluid.
 

mrphoenix80

Member
Jan 1, 2013
251
Yep fluid level check first. Then test drive and make sure when in "D" you have 2nd and 4th gear. I have not seen it in a while but the 4L60 has had some hard part failures that cause this. Happened to me in my old s10 jimmy, but I knew it when it did(it made some awsome sounds). However I may have been at WOT.:tongue:

Here's hoping its just the fluid level.:thumbsup:
 

Regulator

Member
Nov 20, 2011
2,496
No real issue here, just park smarter! :raspberry:
 

seanpooh

Member
Jan 24, 2012
461
mrphoenix80 said:
Happened to me in my old s10 jimmy, but I knew it when it did(it made some awsome sounds). However I may have been at WOT.:tongue:

Same here, I was at WOT trying to pass a slower driver and BAM... I never got to pass that car :redface:
The failure we experienced is the reaction sunshell gear failure. Either the splines get eaten away or the collar of the neck breaks.

EDIT: So I looked at the Service Books and it states that no reverse or slips into reverse;
8539074104_01a1da6401_b.jpg
 

mrphoenix80

Member
Jan 1, 2013
251
For me there was some anger involved. So I left work for lunch rather quickly and when it hit 2nd all you heard was a snap, the engine rev followed by a siren type noise and a thump when it went into 3rd. You should have seen how angry I was then:mad: :rotfl:
 

ErikSS

Member
Apr 14, 2013
46
Were you doing something stupid? Like maybe power braking in reverse to scare the SOB behind you who was being super rude? I've NEVER lost a transmission because of that. LOL
 

ErikSS

Member
Apr 14, 2013
46
I dont recall what he said I broke inside the transmission. I slowly lost reverse. After breaking multiple performance built transmisions... I went to a 4L80E with a 246 selectable tcase.
 

DDonnie

Member
Mar 26, 2012
2,631
ErikSS said:
I dont recall what he said I broke inside the transmission. I slowly lost reverse. After breaking multiple performance built transmisions... I went to a 4L80E with a 246 selectable tcase.

Dude, if you break this thing, you're going to need to switch to a tank, lol
 

ErikSS

Member
Apr 14, 2013
46
I got tired of breakin it. So I built it!
 

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dDUBb

Member
Aug 13, 2014
1
Common problem.

Reaction Sun Shell is broken / teeth are stripped. Have seen this several times with No reverse / All Forward gears OK.

GM updated part is "hardened" although still prone to breaking.
The "Beast" Sun shell is also prone to break. Either part is around $50.

Best solution I have found is the Sonnax sun shell with a new style bearing. Cost is about $100, but if youre tearing the trans down anyways, its going to need a good cleaning and might as well spend the $ on a better quality part.


- Dan
 

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