Locker options?

[H3TDave]

I have an 09 H3T alpha non adventure and I would like to have rear and maybe front lockers. It does fine for what I need but at the least I'd like to upgrade to rear locker for when I get myself into a sticky situation. Anyone have any suggestions?

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[06PullUouT]

ARB air lockers.


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[mjferencak]

I heard if you have the money, OX is the way to go.

 

[4speedfunk]

Eaton E-locker...about $1300 installed.


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[H3TDave]

Eaton E-locker...about $1300 installed.


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Is it possible to wire it in using a factory harness and switch? I've seen extra wires in the dash I didn't pay attention what they were labeled.

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[4speedfunk]

The factory locker is wired thru the computer, so it's a bit more complicated than just getting the button strip and hooking it up. The stock locker is wired so it only works in low range. It gets defeated automatically when you switch to either hi-range mode on the transfer case. Some people don't like this safety feature and they actually rewire it to operate independently of the computer.
Also...factory front lockers are wired so they can only be energized after the rear one. So they only operate in a "secondary" position to the rear locker.

Many people (myself included) just use a standard outboard relay and a lighted switch. I can turn on my front locker anytime I please...and I often use it without the rear locker. My truck came with the factory rear locker and I have not rewired it. So it only operates in low range.

 

[H3TDave]

I didn't figure it'd be that easy. I was anticipating a setup that was separate from the factory since it didn't come with lockers originally. How does it affect the ABS / stabilitrac system?

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[atvspeed4]

I didn't figure it'd be that easy. I was anticipating a setup that was separate from the factory since it didn't come with lockers originally. How does it affect the ABS / stabilitrac system?

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Ive only heard of and seen pictures of one person have their 2008 H3 alpha retrofit with the factory front locker and wiring harness/ tccm flash so that the factory switch with the front locker worked. He was the son of one of the large GM dealership owners around here. Not worth it IMO.

 

[4speedfunk]

Probably lots of opinions on that. I personally feel that ABS, Stabilitrac, and TCS need the four corners of the truck to be completely untethered to each other. That is....open diffs that have unlimited slip from one side to the other. This way the brakes can squeeze each rotor independently according to the situation, without fighting the rotation on the other end of the axle. Low range defeats Stabilitrac and allows the rear locker to be used. Likewise, when you shift out of low range, lockers are defeated and Stabilitrac is allowed. This leads me to believe that the two (lockers and Stabilitrac) don't play nice together.


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[atvspeed4]

Probably lots of opinions on that. I personally feel that ABS, Stabilitrac, and TCS need the four corners of the truck to be completely untethered to each other. That is....open diffs that have unlimited slip from one side to the other. This way the brakes can squeeze each rotor independently according to the situation, without fighting the rotation on the other end of the axle. Low range defeats Stabilitrac and allows the rear locker to be used. Likewise, when you shift out of low range, lockers are defeated and Stabilitrac is allowed. This leads me to believe that the two (lockers and Stabilitrac) don't play nice together.


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Traction control or stabilitrac? Two different systems. Only automatic H3s had stabilitrac. Traction control doesn't care if you have one or two lockers engaged, if there is no difference in wheel speed it simply does not engage those brakes.

 

[alrock]

Eaton is easy and wire it like 4speed said. I use one of the blanks by the 12V outlets. I've only used it in 4low so I can't speak to how it might act up in 4H or 4H locked.