scared to death

[SuperNova]

Re: scared to death

So if what you're saying is true, then there's no difference between Auto 4wd, and 4HI. Guess you should let GM know, because they seem to think they needed an extra button.

In fact, here's what GM says about their auto trac transfer case:

"Light transfer case assemblies with aluminum housings and optimized low-range gears and electronic shift controls with reliable contactless sensors help the available Autotrac active transfer case in Silverado 1500 4x4 models to better adjust to varying road conditions. The Autotrac system features four drive modes (2HI, AUTO/4WD, 4HI and 4LO) plus a neutral setting.

-2HI provides the most efficient driving mode.
-When engaged, AUTO/4WD detects rear-wheel slippage and automatically shifts into 4WD as road conditions dictate.
-4HI helps handle snow, ice, rain and most off-road conditions.
-4LO helps handle extreme conditions, such as steep hills, deep sand, mud and snow. "


I thought you said it 'doesn't "sense" anything'?????

1-If you are not going to accurately read a post then there isn't much sense in further discussion.

2-I never said Auto 4wd and 4wd hi were the same thing, if fact I clarified the differences at least three times

3-I never said the Auto 4wd doesn't sense anything, in fact I said it uses a sensor to detect the position of the internal shift fork.

4- I have had these vehicles on a lift running and I can tell you for sure exactly how they work.

5- Part of my job as a Master Auto Tech(ASE, Chrysler, Jeep, Dodge and Volvo certified) is repairing and rebuilding 4wd, AWD and 2wd systems including front and rear axles and transfer case as well power transfer units (PTU). Including electrical Diagnosis.

6- The system on the new Silverados, Etc does use an active transfer case which electrically controls the internal clutch pack based on input from the ABS system the system is called Autotrac although it still has the Auto 4wd button as previous models, it is a different system. It also does not "shift into 4wd"-- it just applies more pressure to the clutch pack to transfer more power to the front axle.
--
Stan

 

[Noodlestsc]

Re: scared to death

Unless you have lockers front and rear no vehicle truly has "full time" 4 wheel drive.

Just stirring it up a bit...hmmmm can you tell it's winter time around here

 

[SuperNova]

Re: scared to death

Unless you have lockers front and rear no vehicle truly has "full time" 4 wheel drive.

Just stirring it up a bit...hmmmm can you tell it's winter time around here

This was also noted in previous posts.

 

[newbie4life]

Re: scared to death

The Auto 4wd doesn't "sense" anything it has no sensors other than for the position of the shift fork and it doesn't communicate with any of the other modules.

"3-I never said the Auto 4wd doesn't sense anything, in fact I said it uses a sensor to detect the position of the internal shift fork."

Do these two statements look similar to you?

That's it... I quit. I guess I'm just irritable from the cold. I apologize for getting your blood boiling. It's gotten so ridiculous, I can't even remember what the frick we were discussing.

Stick a fork in me.... I'm done.

 

[SuperNova]

Re: scared to death

Yeah, you're right, we're nit-picking over nonsense--must be cabin fever. You read your manual and have an understanding of how to use your system in different situations and I believe that was the whole message to begin with. I too apologize for any ill feelings. My only intent was clarity and that got lost in minutae.
--
Stan

 

[Nos4r2]

Re: scared to death

In fact, here's what GM says about their auto trac transfer case:

"Light transfer case assemblies with aluminum housings and optimized low-range gears and electronic shift controls with reliable contactless sensors help the available Autotrac active transfer case in Silverado 1500 4x4 models to better adjust to varying road conditions. The Autotrac system features four drive modes (2HI, AUTO/4WD, 4HI and 4LO) plus a neutral setting.

-2HI provides the most efficient driving mode.
-When engaged, AUTO/4WD detects rear-wheel slippage and automatically shifts into 4WD as road conditions dictate.
-4HI helps handle snow, ice, rain and most off-road conditions.
-4LO helps handle extreme conditions, such as steep hills, deep sand, mud and snow. "

I'm glad GMC didn't try and teach me to drive offroad! 4hi for rain?!!!

 

[Lone Duck]

Re: scared to death

I have heard a few people claim that a 4x4 won't stop better than a 2wd. That is wrong. a 4x4 will stop better than a 2wd. IF YOU USE YOUR ENGINE AND GEARS FOR BRAKING ! This way the engine is slowing down 4 wheels instead of only 2. 4 wheels have more contact to surface if your engine and gear box are doing the braking, you need less peddle to come to final stop.

 

[newbie4life]

Re: scared to death

I'm glad GMC didn't try and teach me to drive offroad! 4hi for rain?!!!

Hey Satan:

Ummm.... aren't you the guy that uses a front hitch, with a tow rope to retrieve his boat? I'm looking through my manual right now, and GM doesn't say anything about that either???? Imagine that!

Actually, I've been in rains where 4wd would be handy. When pools up in the tracks of the roads, if it makes the driver feel safer, then by all means, use it.... it's not there for looks.

 

[Nos4r2]

Re: scared to death

Hey Satan:

Ummm.... aren't you the guy that uses a front hitch, with a tow rope to retrieve his boat? I'm looking through my manual right now, and GM doesn't say anything about that either???? Imagine that!

Nah, got no front hitch now-and don't personally need to use a rope. I've got a proper 4x4 and I know how to use it...

 

[scoutabout]

Re: scared to death

Most interesting ramp I was ever on was nothing but steel grate supported by huge ibeam pilings and attached to a concrete pier. Man, that thing was steep but the traction was terrific. Really creeped me out though to be able to look down and see water under the entire rig -- vehicle and boat!​

 

[magster65]

Re: scared to death

I'd put it in 4wd before backing down the ramp to pull the boat out. If you have a 4-low option, use that as well. There will be a dramatic decrease of drama.

Yep

 

[starcraft67]

Re: scared to death

Well this has sure turned out to be a lively thread, a lot of fun. Too bad we don't all live in the same place, so we can go down to the corner for a cold one and keep hashing the the 4WD thing out.

 

[StarznBarrz]

Re: scared to death

ahhh man bigjohn1 nothings the same anymore is it?!

 

[StarznBarrz]

Re: scared to death

hahaha got that right starcraft

 

[Mike Robinson]

Re: scared to death

A lot of us over here using 2wd cars haul the boat up the ramp on a long rope to the towball. It keeps the car on the flat and makes it a lot easier to recover.

You do need someone on lookout for it though or some idiot will try and walk either behind the boat or over the towrope.

If you happen to read this Nos4r2.

What did you use under the hitch of the trailer to keep it from dragging?

 

[Mr.Stuart]

Re: scared to death

um, I have a 4 wheel drive jeep grand cherokee, with quadra track, it works for me, but in a two wheel drive, when you get stuck, your just ...well, stuck, in a 4x4, when you get stuck, your REALLY stuck.

I love my Jeep, if I could fit it through the front door and take it to bed with me, I would, my faithful, somewhat dependable, high millage, ocasionally makes me walk, Jeep, .....never mind, it's a Jeep thing, you wouldn't understand.

that's all I'm gonna say ....

 

[SuperNova]

Re: scared to death

um, I have a 4 wheel drive jeep grand cherokee, with quadra track, it works for me, but in a two wheel drive, when you get stuck, your just ...well, stuck, in a 4x4, when you get stuck, your REALLY stuck.

I love my Jeep, if I could fit it through the front door and take it to bed with me, I would, my faithful, somewhat dependable, high millage, ocasionally makes me walk, Jeep, .....never mind, it's a Jeep thing, you wouldn't understand.

that's all I'm gonna say ....

I work on Jeeps...and I DO understand....you are mentally challenged...as are all Jeep owners.....lol

 

[Mr.Stuart]

Re: scared to death

I work on Jeeps...and I DO understand....you are mentally challenged...as are all Jeep owners.....lol

I knew there would be someone out there that understood us Jeep owners

 

[Cruiserman]

Re: scared to death

Hi folks and happy safe boating. There are a lot of forces at work here. angles and loads and surface contact and such. There is a synergy between many elements to be safe and effective to maneuver the load in and out without ever feeling out of control. The vehicle size and weight is important but other factors should never be "professionally overlooked. The tongue weight of your trailer should provide a substantial load on the rear wheels and "negative tongue weight will make almost any vehicle slide when the rear wheels are wet. Any vehicle with four wheel drive should employ its use "always" when lowering or raising the load. The rear wheels should never become wet, submerged, or launched on a slimy ramp. Wheel chocks should always be used when you exit the vehicle. And always use your owners manual for reference for towing capacities. Speed should always be a crawl and your brakes need to be in top condition as to provide equal stopping power to all wheels. Never rely on gross vehicle weight alone to determine your suitability for launch. These other factors are far more important in keeping an even load. Trailer boating should never be considered a daredevil exercise. It should feel safe and controlled... And to use large people on your bumper is silly and reckless .. have another beer... of course.. im all for beer.. dont get me wrong....Think of this scenario ... neutral or negative tongue weight.. rear tow vehicle wheels submerged to the hubs (dont forget they are full of air and buoyant) steep incline, only 2 wheel drive employed... you could have a one ton Ram or f250 with 4 rear tires launching or retrieving a 180 bowrider and sliding to and fro around the ramp... its rear wheel grabbing capacity diminished by more than 50 percent... Think it through people