Transfer case stupid question thread

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Supercharged111

Truly Awesome
Joined
Aug 20, 2015
Messages
12,613
Reaction score
15,236
I have a stupid question. My 98 grinds goin between 2 n 4. Had to use 4lo in reverse to get truck to move. Before I did axle swap it was churning the front wheels but rears were locked. Truck engages in reverse just fine but will lock up back wheels if it rolls too far in reverse.

And I have a stupid question for your stupid question: is the ratio of the new 14 bolt the same as what it replaced?
 

Joe Dirte

I'm an idiot!
Joined
Dec 30, 2017
Messages
2,530
Reaction score
5,300
Location
Ahia
And I have a stupid question for your stupid question: is the ratio of the new 14 bolt the same as what it replaced?
3.42 to 3.73. Didn't use 4wd after install. Axles were matching factory before the swap when I was using 4wd to move.
 

Supercharged111

Truly Awesome
Joined
Aug 20, 2015
Messages
12,613
Reaction score
15,236
3.42 to 3.73. Didn't use 4wd after install. Axles were matching factory before the swap when I was using 4wd to move.

Derr, I see now this was a pre-swap question. It looks like you were spinning a set of wheels when you tried throwing 4wd? That'll grind all day if that's the case. All 4 need to be spinning the same speed for that. 4lo you should be creeping like .5mph again all 4 at the same speed to get it to go. I've had pretty good luck at a stand still as well, just be aware that sometimes you need a little movement for it all to fall into place. I spin the rears on a sheet of ice once, let off and threw 4wd. Boom! There's 4wd. I didn't realize the rears were still spinning when I went for it.
 

Joe Dirte

I'm an idiot!
Joined
Dec 30, 2017
Messages
2,530
Reaction score
5,300
Location
Ahia
Derr, I see now this was a pre-swap question. It looks like you were spinning a set of wheels when you tried throwing 4wd? That'll grind all day if that's the case. All 4 need to be spinning the same speed for that. 4lo you should be creeping like .5mph again all 4 at the same speed to get it to go. I've had pretty good luck at a stand still as well, just be aware that sometimes you need a little movement for it all to fall into place. I spin the rears on a sheet of ice once, let off and threw 4wd. Boom! There's 4wd. I didn't realize the rears were still spinning when I went for it.
I'm tryin figure out why the rears are locking up or acting like reverse is shot but the fronts engage no problem n spin. Tryin go thru diagnostics before I just send trans to be rebuilt cuz to me it's odd that the rear is havin issues (both axles good) but the front is workin fine. That's why I'm leaning toward transfer case as my next point to investigate before I go to reverse in the trans. It is a 4L80e if that matters.
 

Joe Dirte

I'm an idiot!
Joined
Dec 30, 2017
Messages
2,530
Reaction score
5,300
Location
Ahia
Derr, I see now this was a pre-swap question. It looks like you were spinning a set of wheels when you tried throwing 4wd? That'll grind all day if that's the case. All 4 need to be spinning the same speed for that. 4lo you should be creeping like .5mph again all 4 at the same speed to get it to go. I've had pretty good luck at a stand still as well, just be aware that sometimes you need a little movement for it all to fall into place. I spin the rears on a sheet of ice once, let off and threw 4wd. Boom! There's 4wd. I didn't realize the rears were still spinning when I went for it.
Was out at my friend's garage last nite n picked his brain a Lil while we hung out n drank. I dunno why I didn't think of this. He said "pull the rear driveshaft n try 4wd. You said reverse engages fine n if it moves then something wrong in the transfer. You've already eliminated the junk 10bolt bein issue."
You must be registered for see images attach
 

Supercharged111

Truly Awesome
Joined
Aug 20, 2015
Messages
12,613
Reaction score
15,236
Was out at my friend's garage last nite n picked his brain a Lil while we hung out n drank. I dunno why I didn't think of this. He said "pull the rear driveshaft n try 4wd. You said reverse engages fine n if it moves then something wrong in the transfer. You've already eliminated the junk 10bolt bein issue."
You must be registered for see images attach

You're now mismatched front and rear, right? That gives you either a power gear or economy depending on if you rock fwd or rwd.
 

Wlegan

Newbie
Joined
May 17, 2023
Messages
1
Reaction score
0
Location
Illinois
I need a new front yolk for the t case in my 2000 k3500 dump truck. Bought the truck with a missing drive shaft. When I went to install one I found someone broke a bolt in the yolk and mangled the hole with a drill before giving up. I've found every other yolk for the truck but not the front output.

It's a 7.4 4l80 4x4 4.10

Can someone point me to the right part?
 

Komet

I'm Awesome
Joined
Nov 12, 2022
Messages
633
Reaction score
1,596
Location
Skagit Valley, WA
I did a stupid thing and split my front diff apart on the truck and all the pieces in the middle fell out before I could see where they go. This is how it goes back together, right?

You must be registered for see images attach


You must be registered for see images attach


Y'all just use rtv and thread sealant on the bolts when it goes back together?
 

Schurkey

Supporting Member
Supporting Member
Joined
Jan 14, 2018
Messages
10,964
Reaction score
13,744
Location
The Seasonally Frozen Wastelands
I need a new front yolk for the t case in my 2000 k3500 dump truck... ...I found someone broke a bolt in the yolk... ...I've found every other yolk for the truck but not the front output.
Eggs have yolks. Transfer cases have yokes.

Try the GM stealership, or a local transmission shop.

I did a stupid thing and split my front diff apart on the truck and all the pieces in the middle fell out before I could see where they go. This is how it goes back together, right?

You must be registered for see images attach


You must be registered for see images attach


Y'all just use rtv and thread sealant on the bolts when it goes back together?
All that would be in the downloadable service manuals available from links posted on this site.

I would expect NO RTV Silicone. Probably Anaerobic form-a-gasket (Loctite or Permatex 518, or similar) and perhaps thread-locker on the bolts. Again, that'd be in the service manual.
 
Top