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12-19-2008, 06:29 PM
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Hummer Expert
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Join Date: May 2007
Location: PHOENIX AZ
Posts: 681
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Re: Engage Rear Locker in 4-Hi on H2?
Just because I live in Phoenix doe's not mean I don't drive in snow country . I grew up and lived in northern New Jersey (Susex and Morris county ),and hunt in Northern Arizona and Colorado every year. I also spent 2 years in Bufalo New York . and have a set of chains for the H2,and my 05 Chevy 2500 HD ext cab 4x4 Duramax/allison pickup. I drive in the snow and ice every winter .
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A government big enough to
give you everything you want, is
strong enough to take everything
you have.
-- Thomas Jefferson
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12-19-2008, 06:31 PM
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Hummer Expert
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Join Date: May 2005
Location: Southern California
Posts: 829
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Re: Engage Rear Locker in 4-Hi on H2?
I know it is possible to bypass the low range lock out so you can use the locker in 4 high on Jeeps so it must be doable on Hummers too??
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Desert Dan
H3 2006 Adventure/Lux/5-speed/sunroof/rock rails/underbody skids/block heater/Boulder Grey/ Defender Roof Rack
Jeep TJ Rubicon 2003
1988 Jeep Cherokee
Gone - But- Not Forgotten 4x4's
1994 Jeep YJ
Toyota 4x4 Truck(s)
1970 Jeep CJ-5
1962 Willys Wagon
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12-31-2008, 07:19 PM
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Hummer Veteran
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Join Date: Jan 2008
Location: Hot Springs, Arkansas
Posts: 151
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Re: Engage Rear Locker in 4-Hi on H2?
I asked this question a while back and got the same responses. My brother in law did it on his TRD tacoma.....it's called a "grey wire mod" on their forums....apparently you just have to fool the locker into thinking it is "grounded" all the time.
Can someone confirm that this has been done on an H2?
DUCK
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2003 H2, Lux & Adv Packages, Cognito 3" front suspension lift, Gobi Stealth Rack w/ Ladder, Navigation, twin Optima battery setup, AirRaid Intake, Granatelli Mass Air Flow Sensor, Flowmaster Big Block II Exhaust, Diablosport Predator Programmer,Cognito Pitman/Idler Arm Kit, Fabtech Tie Rods, Rancho RS 9000 shocks, Warn bumper and 9.5x winch, Warn light bar, PIAA's everywhere (14), everything blacked out, and rollin' on 39.5" Super Swamper IROKs on black powdercoated stock wheels.
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01-01-2009, 07:33 AM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: Engage Rear Locker in 4-Hi on H2?
Disconeect the rear locker connector and Add a 5 Ohm resistor in series with the two wires going to toward the front of vehicle. Next, add a new 12volt circuit with switch and relay to send power to the two wires going to the connector at the rear diff. It does not matter which is + or - as it is a coil and just needs 12volts to energize.
You are done and can now manually control the locker. The resistor is to prevent "Service 4WD" error as the system looks for this resistance to be present that would normally be the resistance of the locker coil.
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H2 SUT 4.56 Gears, Front Locker, Cognito Pitman/Idler kit & Idler Pivot Kit, Fab Tech Tie Rods, True Tech Trailing Arms, Edelbrock Panhard Rod, PML rear Diff & Tranny Pans, Corsa Exhaust, Dynatech LT Headers, Diablo Predator Programmer, Volant CAI, Warn 9500 Winch, Escort 8500x50 & ZR3 Laser Shifter, Delta Light Bar, Rancho Steering Stabilizer & Bilstein Shocks, Ron Davis Radiator, PowerSlot Rotors, Hawk Brake Pads
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