Jump to content

auto or 4wd

orviskid

Recommended Posts

fondupot Senior Enthusiast

fondupot

Posted
Posted

Auto is considered part time 4 wheel drive. The front wheels will only engage when the rears slip.

 

Here is how you should use the 4wheel drive system in your truck. Also keep in mind you can shift from 2hi to auto, or from 2hi to 4hi on the fly. Same deal going back to 2hi from those. But for 4lo you will need to be at a stop with the truck in neutral.

 

2hi - Normal dry conditions

Auto - Slick roads, rain, light snow

4hi - Heavy snow on roads, offroad

4lo - Low speed, offroad

00Silverado4x4 Senior Enthusiast

00Silverado4x4

Posted
Posted

Auto is considered part time 4 wheel drive. The front wheels will only engage when the rears slip.

 

Here is how you should use the 4wheel drive system in your truck. Also keep in mind you can shift from 2hi to auto, or from 2hi to 4hi on the fly. Same deal going back to 2hi from those. But for 4lo you will need to be at a stop with the truck in neutral.

 

2hi - Normal dry conditions

Auto - Slick roads, rain, light snow

4hi - Heavy snow on roads, offroad

4lo - Low speed, offroad

If I may, for shifting to 4lo, the truck should be rolling about 3-5mph as well as the trans being in neutral. It may shift when completely stopped, but it will shift quicker if rolling a few mph's. Otherwise, as was said ^^^

elite0259 Enthusiast

elite0259

Posted
Posted

Anybody ever noticed how much metal get's stuck to the drain plug of the transfer case? I'm not convinced auto 4WD is that great of an invention... That being said I used to really like it until it came time to do the fluids...

orviskid Enthusiast

orviskid

Posted
  • Author
Posted

I always had 2wd trucks so i"m not used to using any of these. if it snows i'll turn auto on, thats about it. i guess if there's a foot of snow I'd use 4wd. even with the ice we just had in CT, i didn't turn anything on. those won't help any with ice. thanks for the info.

fondupot Senior Enthusiast

fondupot

Posted
Posted

I agree with the first post except for the rain part, learn some throttle control folks!

 

With the stock goodyears, I spin the back tires really easily with even light throttle. I will flip to auto for take off from a standstill, also on turns in the rain. helps tremendously.

oldmann Senior Enthusiast

oldmann

Posted
Posted

also, whats with stabili-trac??? isn't auto and 4wd enough??

ST is a nanny control that helps the truck stay straight by applying the brakes on certain wheels to straighten. It works well except when you get stuck. it will apply the brakes. you can hold the traction control button for 10 seconds and it will "shut off" kinda.

KMGZ400 Senior Enthusiast

KMGZ400

Posted
Posted

 

With the stock goodyears, I spin the back tires really easily with even light throttle. I will flip to auto for take off from a standstill, also on turns in the rain. helps tremendously.

Agreed... Any truck I have ever driven it is very easy to spin the tires unexpecatntly especially in turning or uphill starts

00Silverado4x4 Senior Enthusiast

00Silverado4x4

Posted
Posted

Anybody ever noticed how much metal get's stuck to the drain plug of the transfer case? I'm not convinced auto 4WD is that great of an invention... That being said I used to really like it until it came time to do the fluids...

I didn't have much of anything on my plug when I changed my fluid back around ~90k miles. I use Auto4wd all the time.

elite0259 Enthusiast

elite0259

Posted
Posted

I didn't have much of anything on my plug when I changed my fluid back around ~90k miles. I use Auto4wd all the time.

Really? mine had a fair amount. Not horrible but still more than I expected. I think I did the fluids around 115K. The magnet is huge so I'm sure it's not as bad as I'm making it sound... i just remember my sisters fiance who I work on the truck with (whos a total ford guy) still makes fun of me several months later...

elite0259 Enthusiast

elite0259

Posted
Posted

I thought it was useful until I started going sideways down the road, but the front wheels never engaged because the wheels were all traveling the same speed. I like it for going through stop lights/signs though so the wheels don't all lock up while turning...

fondupot Senior Enthusiast

fondupot

Posted
Posted

I refuse to use auto 4x4. I know how to control my drive wheels.

 

Ok. But then why even buy your Z71? The point of having 4x4 is to use it...

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,840
    Total Members
    8,960
    Most Online
    appletrav
    Newest Member
    appletrav
    Joined

  • Who's Online   4 Members, 0 Anonymous, 287 Guests (See full list)

  • Latest Articles

  • Posts

    • Core-Lokt
      Wiring Help, Please

      By Core-Lokt · Posted

      Thanks; I looked there a few minutes, and I think I can find something. I really never looked there, as I thought it was stuff like PTO/aftermarket bodies/accessories like snow plows.
    • newdude
      2 speed transfer case optional now?

      By newdude · Posted

      This is a 1/2 ton thing ONLY.  All HDs 2020-2026 have the two speed transfer case, with Autotrac as an option.     1/2 tons 2019-2026, regular 4x4s come with a single speed case (no 4LO!), and trucks with Z71 ordered, or all Trail Boss trucks come with the 2 speed case.  2 speed case is also an option on WT, and is also standard on High Country.  
    • newdude
      Different requirements for oil filters?

      By newdude · Posted

      2013 5.3 still to this day calls for the PF48 filter.  Which as a 15psi bypass pressure.     There is a TSB, 17-NA-157 that talks about the PF-63 and PF-64 filters which have a higher bypass rating of 22psi.    TSB HERE - temp.xml   "Beginning in 2012, the oil pumps began to regulate main gallery feedback instead of pump out pressure. This means that the oil pump now does not begin to regulate until pressure is built up to the main gallery. This change reduces the amount of time it takes to provide oil to the engine bearing and lifters during extreme cold start conditions.  Main gallery feedback oil pump control systems are present on the following engine families which use Spin-on oil filters: Small Gas Engine (SGE), Large Gas Engine (LGE), High Feature (HFV6) Gen2 and Small Block Gen5 gasoline engines. These engines with the main gallery feedback oil pump control systems are factory built with an ACDelco® oil filters"   It also calls out what engines use those filters.  The gen 4 small blocks were not on that list (LMG, LC9, L9H, L92, L94, L20, L96).  Gen 5 small blocks use the higher pressure filter.          That all said...   Your 7045 Napa filter is the PF63 equivalent, with 22psi bypass.  You are already using the higher bypass pressure filter.  You CAN keep using it, you don't technically have to use it though.  
    • Grumpy Bear
      Different requirements for oil filters?

      By Grumpy Bear · Posted

      Do you know WHY the filter relief setting was increased to 22 psig?    When the new system goes into the second stage the pump volume ramps up considerably. It was found that the 15 psi filter bypass setting put the filter in bypass on a warm engine when the second stage was activated. Raising the filter bypass setting forced the filter to do what it designed to do. Filter. Preventing debris from circulating during high load, high rpm operation.    So next question is how did GM find this out? VLOM/lifter failures and a deep dive by Melling Corp.    Last question. Is it required? Look at it like this; a motor may be equipped with a rev limiter. But it only works if the set point in reached. That 22 psig setting only matters if the pressure differential across the filter media exceeds 15 psig during normal warm operation. Second stage kicks in around 3000-3500 rpm.    I can't answer your question because I don't know you and how you use the truck. But I think there is enough information here to let you decide for yourself. 😉
    • Coastie05
      give me some tips to make my truck look better

      By Coastie05 · Posted

      Go back to OEM wheels. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...