Re: Rear E-Locker
 

TC 1 is standard
TC 2 allows wheel spin and keeps the brakes from slowing the spinning wheels for mud and snow.

I always used e locker and TC2 in 4 low so don't know if TC2 worked in HI lock or open.

I just don't want TC to slow the wheels down when u need the wheel spin and the e locker is going to keep the rear tires same speed so the TC won't slow one rear wheel if it's turning faster because it has a little less traction.

will the e locker work in 4 hi in the H3?

Re: Rear E-Locker
 

where is the traction control ? i know there is only a button for stabiliztrack on the control panel..

Re: Rear E-Locker
 

No. It will disengage at 20MPH.

So can you go over 20MPH in TC 1?

Re: Rear E-Locker
 

That is because the Traction Control system is always on. You cannot turn it off.

Where is it? In the puter:D

Re: Rear E-Locker
 

Wow, strong opinions either way - I don't know what the right answer is, but I will add it is very difficult to design a traction system for all surfaces.

The TC switch shuts off both the stability and traction systems.

There are two wires going to the e-locker: light green and black (I think these are the colors). +battery is switched to the light green wire and the black wire returns to the transfer case shift control module where it connects to ground through a resistor/current limiter. The final circuit will be pretty simple but you need to do serveral tests first to understand what is inside the control module.

For example, you'll need a diode to clamp the inductive current for the e-locker coil to prevent an insulation breakdown when you interrupt coil current.

Re: Rear E-Locker
 

TC Switch?

Re: Rear E-Locker
 

Sorry, I wasn't clear - Traction Control System - TCS switch.

Re: Rear E-Locker
 

On which model H2 or H3?

If H3, what switch are you referring to?

Re: Rear E-Locker
 

I was refering to the H3. This is the rightmost switch - picture of a car with squiggly lines underneath it. Hold it in for 5 sec and this will disable the traction control and the stability system (if you have it).

Re: Rear E-Locker
 

That is the stabilitrac switch. Different system than the traction control.

You cannot turn off the traction control:D

Re: Rear E-Locker
 

You are incorrect sir/maam (;))... there is a switch on the column... the ignition switch! That will turn off the traction control. But I don't think it's useful over 5 mpg (I could be wrong;) )!

Re: Rear E-Locker
 

Sir????

You = :OWNED::OWNED::OWNED:

Re: Rear E-Locker
 

Here are two pages from the owners manual. You can get the electronic owners manual from www.mygmlink.com after you register.

Re: Rear E-Locker
 

:popcorn: That sure explains it :clapping:

Re: Rear E-Locker
 

so lets see, we turn OFF the TC/SC when in mud and snow or it will limit wheel spin which may get u stuck.
Now the e locker kicks out over 20mph, so if play off road in muddy or snowy conditions we just have to keep the speedo under 20mph :twak:

I know I've hit a lot more than 20mph in mud pits and snow drifts not to mention slippery hills.


I still want my elocker to stay on when I turn it on.

Re: Rear E-Locker
 

***crickets****




now what?

Re: Rear E-Locker
 

:iagree:

Re: Rear E-Locker
 

I made the mistake of not getting the off-road package so I can't just try this on mine. How about this. With the key off, disconnect the connector from the e-locker. Measure the resistance from the black wire (going to the control not to the e-lock coil) to a good ground as close to the control as possible. Zero out the probe resistance first.

Re: Rear E-Locker
 

I have the service manual and pages 4-150, 4-156, 4-160 explain the following respectively: Differential lock schematics, Circuit Description, and Electronic Diff Lock Will Not Disengage troubleshooting. I wish I could post this and have it be readable or be able to explain it. (I'm a Pharmacist not an Electrical Engineer):confused: if anyone else can post this info for ChevyHighPerformance to look at we might have an answer.

Re: Rear E-Locker
 

Damn it Jim!

Attachment 32564

Re: Rear E-Locker
 

I have these too. The control monitors the return. My question is it through a relatively large resistance to limit current (like 3 ohms) or a small resistance (like 0.25 ohms) just to monitor the current. My guess is that it's a small resistance, but I'd like to make sure. That's why I asked for a resistance measurement.

Re: Rear E-Locker
 

I'll do it sunday if someone doesn't get it done before.

Re: Rear E-Locker
 

Here is the circuit I?m thinking about to remotely control the e-locker. First, there are many different circuits to do this function. I?m leaning this way because you only need a single wire to run to the remote control switch. When you use the normal stock e-lock switch, the light green wire gets +12 volts and the black wire gets tied to ground. This energizes the relay?s coil. The contacts connect the e-locker coil to the transfer case shift control module.

When the normal stock e-lock switch is selected to disable the e-lock, you can control the e-locker using the remote switch. When the switch is closed, +12 volts is applied and current flows through a 5 amp fuse, a resistor (depends on the black wire to ground resistance measurement), to the e-locker coil, and then to ground.

It?s probably best to not use both the normal stock e-lock switch and the new switch. If both switches are used, you go over 20 MPH, and the transfer case shift control module tries to deenergize the e-locker, the relay will open and your remote switch will supply power to keep the e-locker engaged. The concern is I don?t know what happens to the e-locker while the relay transitions from on to off.

The part numbers listed are Radio Shack part numbers. Do not eliminate the diode.

Re: Rear E-Locker
 

CHP,
Your concern on this mod regarding using this override circuit and the stock circuit is valid. There is a missing link in your stock illustration that would be the interrupter or sensor that opens this circuit when certain conditions are met.
Implementing this mod would not be advised till after warrentee expiration.

Re: Rear E-Locker
 

It looks like I'm wrong and HummBebe is correct. I switched the stabilitrak system off by holding down the stab button, as the manual states, and I was still able to get the traction control to kick in even though the display showed "stab sys off". This is different from how the owners manual says the system operates.

Re: Rear E-Locker
 

Thank you for posting that. :D

Re: Rear E-Locker
 

The rear locker can be modified to work "anytime". There is a way where you can add a "bypass" wire to trick the CPU that it was in 4-low. It's been done many times with Tacomas and some Heeps. I'll try and take a more deeper look into this.