Auto 4-wheel drive

[Judboy]

I see no issue putting in Auto 4-wheel drive when it is raining. Anyone disagree or confirm?

[Denaliboz]

I accidentally drove in auto 4wd for a couple of weeks and there were no negative effects that I noticed. Should be fine in my opinion.

 

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[Adleeper]

I've done it before. It only engages when the rear wheels start slipping so I don't see an issue with it.

[gSwift]

Here we go again!

 

http://www.gm-trucks.com/forums/topic/162486-driving-in-4x4-auto/?hl=%2Bauto+%2B4+%2Bwheel+%2Bdrive&do=findComment&comment=1472941

http://www.gm-trucks.com/forums/topic/157452-auto-4-wheel-drive-when-to-use/?hl=%2Bauto+%2B4+%2Bwheel+%2Bdrive

[Judboy]

Raining and wet roads seem to be an acceptable need for Auto-4wheel.

[fondupot]

I see no issue putting in Auto 4-wheel drive when it is raining. Anyone disagree or confirm?

 

Yep, I will flip into auto when its raining. but I will flip back to 2hi when I am moving in a straight line. I don't see a need for the auto to be engaged while in motion. But when at a stop light or making a turn, I flip it on for the added traction.

[KARNUT]

I had an 04 Z71 put 200k on it in 3.5 years, when it rained I put in auto 4WD sometimes for days on a trip if it rained that long, never had a problem. Figured that's is what it was for, otherwise 4WD high would work for mild off road. Made my living mostly off road, never broke a 4WD.

[Isriam]

what rainy situation would you ever need 4wd? i drive all the time on rain soaked roads with 2wd.

[mdmischief]

what rainy situation would you ever need 4wd? i drive all the time on rain soaked roads with 2wd.

 

 

Dying stock tires. Tires on my Canyon were awful towards the end of their life.

[TJay74]

Exactly, I have never needed 4wd to drive in the rain auto or not. If you cant get from point A to B in 2wd then maybe you should park the vehicle and drive it once the roads are dry.

[KARNUT]

what rainy situation would you ever need 4wd? i drive all the time on rain soaked roads with 2wd.

Ever hear of hydroplaning? It helps with that. If you have it use it. If it wasn't meant for on road the regular 4WD high would do it.

[TJay74]

4wd will not help with hydroplaning, hydroplaning means all tires have lost contact with the road surface, not just the rears. Spinning tires do nothing to regain traction when hydroplaning, decreasing speed until the tires break thru the boundary layer of water and contact the pavement again does.

[KARNUT]

Exactly, I have never needed 4wd to drive in the rain auto or not. If you cant get from point A to B in 2wd then maybe you should park the vehicle and drive it once the roads are dry.

Are you serous? The guy ask we answer. It helps like anti lock brakes, etc. I guess all people may not be as blessed as a driver as you. By the way, in the 40 years I driven I had two accidents, two drivers running stops lights. How about you?

[Isriam]

how do anti lock breaks prevent hydroplaning?

 

you do not want to use auto unless you're where your front tires can break free (mud, dirt, sand).

[mdmischief]

how do anti lock breaks prevent hydroplaning?

 

you do not want to use auto unless you're where your front tires can break free (mud, dirt, sand).

 

Antilock breaks don't. Once you've come up on plane nothing will change until you scrub off speed through the water resistance. Brake and steering input are what lead to crashes in most cases. The other cases are where you need to put in this input to avoid something but can't.