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Old 12-19-2013, 09:17 AM
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Re: weird 4x4 problem 2003 Chevy Tahoe Z71

Quote:
Originally Posted by j cAT View Post
I find the vehicle 4wd confusing to me with your post.

your vehicle should have auto 4wd . this is activated when the vehicle PCM see a slippage.

with 4wd lo/hi you are in locked 4wd. the front axle and rear are locked as one.

when stopped and stuck you use 4wd hi/lo not auto.
I get it stuck on purpose to test the 4wd. as stated above, in 4HI the front wheels dont spin when on the ground and hence I get no traction to get out BUT when in auto 4wd the front wheels do spin and I get decent traction. I am aware that this does not make sense and that is why I am posting this question here.

Thank you for explaining to me when to use auto 4wd and 4hi and when to change the oil.
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