What are IG's 4 Gear Mode Recipes?

[Grenadian]

Hi, Dear
I need a detail of the 4 gear modes of IG.
High / High Lock / Low / Low Lock
My IG has become much smoother in the movement of the transfer case than before.
However, there is no proper usage situation of the 4 gear modes in the user manual.
I need education.

Very Thanks.

 

[Bruce B]

Hi, Dear
I need a detail of the 4 gear modes of IG.
High / High Lock / Low / Low Lock
My IG has become much smoother in the movement of the transfer case than before.
However, there is no proper usage situation of the 4 gear modes in the user manual.
I need education.

Very Thanks.

From the manual…
Not sure exactly what you are looking for beyond this?

 

[landmannnn]

Hi, Dear
I need a detail of the 4 gear modes of IG.
High / High Lock / Low / Low Lock
My IG has become much smoother in the movement of the transfer case than before.
However, there is no proper usage situation of the 4 gear modes in the user manual.
I need education.

Very Thanks.

In simple terms

High - normal roads
High lock - gravel tracks
Low - Slow and steady such as manoeuvring a trailer
Low lock - proper off road conditions

 

[Grenadian]

From the manual…
Not sure exactly what you are looking for beyond this?

View attachment 7878423View attachment 7878424View attachment 7878425View attachment 7878425

Very thanks for this, but Landmannn said what I want.

​

 

[Grenadian]

In simple terms

High - normal roads
High lock - gravel tracks
Low - Slow and steady such as manoeuvring a trailer
Low lock - proper off road conditions

Thanks a lot, What would I choose snow or a little ice?

 

[Bruce B]

Thanks a lot, What would I choose snow or a little ice?

I’d say “it depends”. The center differential lock gets you more traction at the expense of steering. If you are driving on a snowy or icy road, I’d probably leave it unlocked until I found myself in a situation where I was needing more traction say to get up a hill… then I’d lock it to push through.

 

[bemax]

Thanks a lot, What would I choose snow or a little ice?

If driving on a proper road without steep ascents you should stay in high without a locked diff. The Grenadier has a all time 4 wheel drive so you are prepared for some slippery parts if you have the momentum of a decent speed. Normally you shouldn’t notice a spinning wheel in such an situation.

 

[CrazyOldMan]

Thanks a lot, What would I choose snow or a little ice?

Here’s what I do - some snow on paved roads - 4H unlocked. Rural roads where the snow has not been cleared - 4H locked. Went into a field with deeper snow - 4L locked, in Manual at low gear.

 

[parb]

Steep gravel, down or uphill is a place where I go low on as well. Usually with just centerlock.

 

[Zimm]

Thanks a lot, What would I choose snow or a little ice?

high.

low will amplify the tq to the wheels which is not ideal, and any locking will force a tire to break free on a turn, which again is not ideal.

Two nights ago I was fiddling with the gear shifter and it permitted me pull away in second gear. That would be your ideal on a slick surface, and has the added benefit of you controlling the shifting and tq to the tires. I'll have to test that again. These trucks have a ghost in the machine, and there's no telling if that was a one off or it's programmed to allow it.

 

[Tom D]

Centre diff is good for loose traction surfaces even if you dont “need” it go go forwards. It improves handling. Gravel roads for example or packed snow. It also massively improves braking performance on low traction surfaces as due to the brake bias the front wheels are more likely to lock up, with the centre diff locked braking force is shared between all four wheels. Same with packed snow.

 

[Tom D]

The presenter may not be to everyone’s tastes but he’s right about this..
FF to the 5 minute mark..

View: https://www.youtube.com/watch?v=RgMP7YbhvwU

 

[AaronS]

One other thing to note: you should not have the transfer case locked (high or low) on pavement roads.

 

[CrazyOldMan]

high.

low will amplify the tq to the wheels which is not ideal, and any locking will force a tire to break free on a turn, which again is not ideal.

Two nights ago I was fiddling with the gear shifter and it permitted me pull away in second gear. That would be your ideal on a slick surface, and has the added benefit of you controlling the shifting and tq to the tires. I'll have to test that again. These trucks have a ghost in the machine, and there's no telling if that was a one off or it's programmed to allow it.

Icy paved roads correct - you don’t want spin on the tire from a stop. My third scenario (deeper snow off-road) would I go 4L and manually control the gear. You want to ooooooze out of that position. Also - I keep snow socks for the tires just in case.

 

[CrazyOldMan]

I have these stored in the back - haven’t had the need to use them but thought the reviews looked good. Interested in hearing from anyone who has had to use them for recovery in snow (compared to chains). I’ll also put on the winter tires in the next few weeks. More slipping than I would have liked last week with our first snow/sleet of the year on the K02’s.

View: https://youtu.be/sPkM1CL4oGY?si=pPUJa7EzqTppC48u

 

[Bruce B]

I have these stored in the back - haven’t had the need to use them but thought the reviews looked good. Interested in hearing from anyone who has had to use them for recovery in snow (compared to chains). I’ll also put on the winter tires in the next few weeks. More slipping than I would have liked last week with our first snow/sleet of the year on the K02’s.

View: https://youtu.be/sPkM1CL4oGY?si=pPUJa7EzqTppC48u

It’s interesting to hear your comment about the KO2’s in the snow. They sure look like they’d be decent in the snow but apparently the lack of a snow rating means something! I used to sell our customers snow tires with the promise that if they did not believe the performance in snow was worthwhile, I’d purchase them back. I never had a single person ask for their money back.

 

[CrazyOldMan]

It’s interesting to hear your comment about the KO2’s in the snow. They sure look like they’d be decent in the snow but apparently the lack of a snow rating means something! I used to sell our customers snow tires with the promise that if they did not believe the performance in snow was worthwhile, I’d purchase them back. I never had a single person ask for their money back.

I haven’t had much experience with them in snow - one blizzard with heavy, sticky snow and a snow/sleet mixture with less accumulation. They ARE three peak rated but i wasn’t impressed - also wasn’t impressed during heavy downpours. But, consider the source - I’m in Wisconsin and our version of drifting is gunning it through turns on snow - and this is a 6000 lb truck. My expectations might just be out of whack. I’ll see what I think about how it handles with the Blizzak LT’s. And I hear that the K03’s are supposed to be a little better, especially with water clearance - so when it’s time to get rid of the K02’s I’ll try that. K02’s have been great with most conditions.

It would be interesting to hear feedback from regions that get that “just a little too warm” winter precipitation that turns to sleet or freezing rain - parts of the UK, US mid-Atlantic, etc. I drive in snow all the time - still hate driving through PA during an ice storm. Other than white-out Hoth conditions in Wyoming with 5 feet of visibility, that would be my least favorite kind of winter driving.

 

[Bruce B]

I haven’t had much experience with them in snow - one blizzard with heavy, sticky snow and a snow/sleet mixture with less accumulation. They ARE three peak rated but i wasn’t impressed - also wasn’t impressed during heavy downpours. But, consider the source - I’m in Wisconsin and our version of drifting is gunning it through turns on snow - and this is a 6000 lb truck. My expectations might just be out of whack. I’ll see what I think about how it handles with the Blizzak LT’s. And I hear that the K03’s are supposed to be a little better, especially with water clearance - so when it’s time to get rid of the K02’s I’ll try that. K02’s have been great with most conditions.

It would be interesting to hear feedback from regions that get that “just a little too warm” winter precipitation that turns to sleet or freezing rain - parts of the UK, US mid-Atlantic, etc. I drive in snow all the time - still hate driving through PA during an ice storm. Other than white-out Hoth conditions in Wyoming with 5 feet of visibility, that would be my least favorite kind of winter driving.

My mistake… I thought they were not snow rated. I ordered my Grenadier with the Bridgestone Dueler A/T tires and I know they are snow rated.

 

[CrazyOldMan]

My mistake… I thought they were not snow rated. I ordered my Grenadier with the Bridgestone Dueler A/T tires and I know they are snow rated.

They might actually be a little better in snow - not sure, haven’t tried them

 

[255/85]

I have these stored in the back - haven’t had the need to use them but thought the reviews looked good. Interested in hearing from anyone who has had to use them for recovery in snow (compared to chains). I’ll also put on the winter tires in the next few weeks. More slipping than I would have liked last week with our first snow/sleet of the year on the K02’s.

I wonder what the lifespan of those are?