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Author Topic: G80 locker in 04 Z71  (Read 1532 times)
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chp5
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« on: 09/24/11 02:55 AM »

I was reading another thread on gear ratios and codes in the glove box. My 04 Z71 has 3.73 gear (gt4) and a locker (g80).

Forgive my ignorance, but what does a locker do and what is the benefit?  Thx.
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2004 Z71, no cladding, Tahoe Z71 rims, CAI, backup sensors
ygmn
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« Reply #1 on: 09/24/11 02:58 AM »

When one rear tire spins faster then the other side... and speed is under 20 mph..

the locker will kick in and make both tires spin together...

which helps prevent on from being stuck... but make it hard to take turns..

it will unlock when you stop and back up or go over 20mph....

SEARCH EATON G80
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« Reply #2 on: 09/24/11 05:05 AM »

good answer ygmn  Thumbs up! 

I have the same, '04 Z71 3.73 rear end. Z71 or Z66 both came with the Eaton locking rear differential. At slow speed when one of your rear wheels slips it is supposed to lock up so both rear wheels turn at the same speed.

You can test it easy, all you need is a loose surface. Wet pavement, dirt road or anywhere you can break traction easy. Cut your steering wheel hard left or right then gun it from a stop, make sure nobody is in front of you ! The rear end will lock and since one rear wheel is traveling a further distance,... the rear end will get squirrly when you are turning.

Do it straight ahead too, you should be able to feel it lock.

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chp5
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« Reply #3 on: 09/24/11 06:49 AM »

Thanks for the replies. 
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2004 Z71, no cladding, Tahoe Z71 rims, CAI, backup sensors
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