Rear E-Locker
 

I've searched thru a few threads but with no luck. Has anyone successfully bypassed the lo-4wd control of the rear locker?

Re: Rear E-Locker
 

I'm no mechanic, so I am not sure why you want to by pass this, but I have a switch above the radio, where the 4hi lock, 4Low Lock etc buttons are. One is to engage/disengage the rear locker. And as far as I know, the rear locker is only available in the 5speed manual trans.

Re: Rear E-Locker
 

The locker is availabe with either transmission and the bypass he's referring to is so that it can be engaged in 4Hi-Lock. From the factory, you can only engage the rear locker when in 4Lo and it automatically disengages if you go over 20mph, IIRC.

There was some talk about this on here before. But I haven't seen anyone post that they have successfully bypassed it in the H3 yet.

Re: Rear E-Locker
 

Right on, there are plenty of times that I'd like the rear locker locked in 4-HI, dune riding, mud running, snow.... Anyone had any success?

Re: Rear E-Locker
 

I have not done this but the whole car runs on a 12-Vdc system. Just find the wire that goes to the e-locker and tap with a volt meter and turn it off and on and then hook up a switch. that should do it. give it a try and then let me know if it works.

Re: Rear E-Locker
 

What's 12V DC have to do with it. If it was a 6 volt system it would work the same, or a new 42 Volt system?

Yes, there is a way to bypass it and it requires more than one wire, or you will light up the DIC and set codes.

Re: Rear E-Locker
 

f5fstop, do you have more info than that? I sure would like to work around this limitation.

Re: Rear E-Locker
 

Don't really want to interject here, but...

With the full time 4WD, and the traction control system, in the situations you describe, I just don't understand why you would need it?

Re: Rear E-Locker
 

Don't believe you would need it at speeds above 20 mph. The locker is supposed to be used for low speed applications; thus the 20 mph unlock. It might cause damage to the rear locker, which from my experience reading forums, means the person will remove the bypass and hit GM for the warranty.

We already have enough legitimate hits on warranty for the front axle...:clapping: and that is GM's fault.


So, even though I know how, I won't say how.

Re: Rear E-Locker
 

Too bad. The guys with a Jeep Rubicon figured it out and gladly share the info on how to. Seems like a valid reason for wanting to be locked in 4Hi IMHO.

Re: Rear E-Locker
 

Are they Jeep / DC employees?

Re: Rear E-Locker
 

The e-locker is controlled by the transfer case shift control module. This module monitors both the control and return voltages from the e-locker actuator and if they are incorrect DTC-C0388 is set and SERVICE 4WD is displayed. The control module also has a free wheeling diode to accomodate the e-locker's actuator coil's inductance. The e-locker's coil normal resistance is between 2.2 and 4.3 ohms.

Re: Rear E-Locker
 

I'm sure some were in the beginning. But now it is so common that aftermarket companies are offering kits. DC stated that they did not want to offer it as an option due to liability reasons (i.e. soccer mom munching rear diff in mall parking lot because she hit button accidentally) just like f5fstop stated above.

My point is that it (should) be an easy fix for somebody to figure out and the reasons stated for wanting to do it are sound. I completely understand why f5fstop doesn't want to publisize how to do it and I wasn't giving him crap. I just said it was too bad that there wasn't a quick fix out there as the original poster's reasons for wanting to do it seemed logical to me. I'm sure somebody will eventually post how to do it. If you're stupid enough to do the fix and then munch your locker, then I agree you shouldn't claim it under warranty. But, just because GM (or Jeep) doesn't offer it that way from stock is no reason to discourage somebody from doing it IMHO.

Geez, you guys are sure quick to jump somebody's ass if they don't follow the norm like sheep around here!:popcorn:

Re: Rear E-Locker
 

Ya think???

I simply stated that there are two other systems that would cover the needed traction in the situations you described.

How is that jumping your ass?

Hummers are more sophisticated vehicles. Comparing them to an outdated redneck system the likes of which Jeep uses is just well.....dumb. They are different. Period.

:popcorn::popcorn:

Re: Rear E-Locker
 

Yeah, I think.

Actually, I wasn't refering to your reply. But, you jumping in kinda proves my point.

It is funny in that I wasn't comparing apples to oranges. I agreed with the original poster that you should be able to bypass the system and that his reasons for wanting to seem valid. The fact remains that even though "Hummers are more sophisticated vehicles", there should be a way to do it. And if the guy wants to, he'll find way. I bought a Lux/Adventure over the Rubi. I'm one of you guys. I just don't share in the elitist attitudes that stock vehicles (no matter how "sophisticated" they are) should remain stock because thats how our lord god Hummer wanted them to be. If there are improvements to be had by tinkering under the hood in the effort of better off-roading, I'm all for it. But, as stated, I was not giving f5 attitude for not giving it up. He is a valuable asset to this board and has helped me out. I would not want him to jeopordize his job over a questionable mod. (Least of all for somebody else instead of me :D.)

You guys are a trip. I suppose that if I wanted to crank on my torsion bars a couple of turns to run bigger than stock tires, you'd poo-poo it because it isn't how it came from the factory? Give me a break.

You need to see how some of you long timers come across sometimes. Holy crap!

Re: Rear E-Locker
 

Just because you can ...doesn't mean you should:p

Re: Rear E-Locker
 

Oh and I run 35's with 5 turns, kicks ass on the Rubicon:excited:

Re: Rear E-Locker
 

My next mod. Going with 35" BFG/MT's. Was going to try 2.5 turns first. And, Moab is a couple hours from me.:jump:

Re: Rear E-Locker
 

So does that mean the Jeep guys are "cooler" than we are??

And you still have not address the need. Why when you have Traction Control and Stabilitrac?

Re: Rear E-Locker
 

:popcorn:

Re: Rear E-Locker
 

You're kinda wordy aren't ya? :giggling:

Re: Rear E-Locker
 

Cooler, no (especially how you basically owned Moab on things the Jeep guys run away crying from :giggling: ). A bit more open to sharing thoughts on improving factory stuff... maybe. ;)

I'm no expert with sand, but Traction Control and Stabilitrac doesn't seem like it would be of as much a benifit as a locked rear in a 60/40 set-up. Snow and ice yes. Mud? Who cares... only rednecks play in mud.

Re: Rear E-Locker
 

I'm at work and I get paid by the hour... :fdance:

Re: Rear E-Locker
 

It's designed to prevent driver error, it detects spin and sends power to the opposit wheel.

I've run sand, a little snow, and some serious mud (probably won't do that much). With the BFGs in sand and mud, it was awesome.

No worries. Only Sewie got stuck:giggling:

Re: Rear E-Locker
 

Good thing you were at the bottom to get pics. :OWNED:

Re: Rear E-Locker
 

Who exactly is jumping on your ass? :confused:

Re: Rear E-Locker
 

Hey, I saw that picture... I think Sewie was just taking a break he wasn't really stuck..... :beerchug:

Re: Rear E-Locker
 

I'm a LONG way from being an expert on much of anything.. But my observations in sand was that the H3 did much better in 4Hi Lock with the traction control turned off.. With the traction control on it kept feeling like the motor was bogging down.. In 4Lo I had plenty of power, but no speed.. 4Hi Lock with traction control turned off, the truck would stand up and go...

On the rear E-Locker... Eaton makes a locker thats designed to be used on the drag strip.. Granted we're not on the drag strip, but there's not a soul here putting 500hp to the rear wheels either.. If Eaton's will hold up on a 500hp dragster, GM should be able to make one that'll stand up to the power an H3 can dish out... Of course you think they'd make a Front diff that would hold up to though...

As far as being able to bypass the setup to get it to work, it shouldn't be to much of a problem for any decent mechanic that's familiar with electronic transfer cases and e-lockers.. Just remember that most decent mechanics do that kind of stuff to make a living.. You may end up having to drop a bit of change to get it done right..

Rob

Re: Rear E-Locker
 

Until I blew right past you.....


:OWNED:

Re: Rear E-Locker
 

Whatever SloMo....:rolleyes: :fdance:


And the video evidence does not support your crazy theory. :OWNED:

Re: Rear E-Locker
 

Don't cry baby, :crying: we all know you're the best H3 wheeler:giggling:

Re: Rear E-Locker
 

Damn, for enough money you can get anything you want. I would imagine that the Eaton locker on the drag car is considerably different than the Eaton locker (AAM Diff) that comes on the H3. Let's just compare apples to apples, and not to oranges in the future.
As for the technicians who do that for a living...take the damn H3 to them and have them to the bypass; I really don't give a flying rat's a** what you or your so-called technicians do with the rear locker.

Re: Rear E-Locker
 

Would ya just say it.....please.....let it fly...K?? :giggling:

Re: Rear E-Locker
 

back on TOPIC, I'd like to get the e locker to work anytime too.

I was going to try it on the H2 before we got rid of it.

Always get tired of having to keep locking it in after blast through mud holes.

I also know how trucks w/ dual detriot locker drive on snow and ice, have to be a little careful on curves.

I'll have to see if my EFI live can clear codes in the H3, if it does, I'll just reset them after playing.

Re: Rear E-Locker
 

Snow and Ice = Stabilitrac

Sand, Mud or loose soil = Traction control


For fcks sake:rolleyes:

If you need a locker at those speeds, I'd venture you are over using it at lower speed too.

Please tell me what I am missing here???

Re: Rear E-Locker
 

You need to read around the forums more ;) :D

Lots of us have already cranked and many have 35's :clapping:


:popcorn:

Re: Rear E-Locker
 

if you want to do ithis its probably not difficult at all. Just take a voltmeter and probe the wires out of the locker and see what their status is when in hi(unlocked), hi(locked), low(locked). Play around with diffrent settings and make sure you know what is what.

Locking the diff is probably the easy part, appliying votage where necesary. The other part of not setting codes is harder, but if im on the rite track it should be easy. Since you know what the voltages, resistance or what ever else may chage, just duplicate that condition on the wires going back to whatever is controling the locker, so that its fooled into thinking the locker is unlocked. Do this simulation with a battery or some electronic tinkering things:) .

I am not saying this will work, but if you are desperate its worth a try, and I personally (with my limited knowledge:o ) think it might work. However, as many have said you can ruin your locker (or something else) by using it when your not suposed to.

I personally would not have the locker engaged at any speed even on sand, snow, ice or whatever. I would just leave it to the TC, stabilitrack. The reason I say this is because engineers with far greater knowledge than most of us have designed this vehicle, and if they think it should be this way then im for it. Although lawyers might have had something to do with the engineering process. However you are your own person and you have your own truck so you have the freedom to do whatever you like (just remember GM will not be responsible for repairing any damage), thats why you paid for it.

If you actually do this and something, anything, goes wrong, dont be looking for me afterwards.:D

Oh and by the way, does the H3 have Traction Control and StabiliTrack, or just Traction Control?

Re: Rear E-Locker
 

At a HH they had a pretty tall steep muddy hill and said the H2s wouldn't make it up only H1s (H1 w/ wore tires couldn't even make it up).

I followed the lead H1, needed a little run but had a creek at the bottom so couldn't get much speed. low range everything locked TC on normal.
It kept pulling the engine down from all the slippage, still made it up but barely.
went down and tried it later after the stock H2's and one H1 couldn't make it up. turned to TC2 to allow slip and worked much better w/ more speed.
w/o locker it may not have made it. there was two of us running true mud tires (both of us made it), the others were stock TA, only way for them to make it was run on the sides where it wasn't muddy and not as step.


I like to decide when I want to run e locker not GM's lawyers.

Re: Rear E-Locker
 

:popcorn:

Re: Rear E-Locker
 

TC 1 = 4hi lock ?
TC 2 = 4lo lock ?

Or is it the other way around?

When you have an H3 in 4lo lock, the stabilitrac system is disabled.
However, the traction control system still operates.

In 4hi lock, both systems are available.These system are "smarter" than an engaged e-locker.

I can't speak for an H2.

In that type of situation, I would venture to guess a locker would have swept the vehicle sideways at a higher speed.

Lawyers protect large companies from making really big mistakes.

It could also be that the system was tested to the point they knew Stabilitrac and Traction Control were the better alternative, both for people and vehicle components.