2021 trail boss Leveling kit

[Poppy]

I have heard that a trail boss will need a leveling kit and I have heard that it doesn’t. I’m not sure if it’s my eyes playing with me but I’m curious does the factory 2 in lift need to be leveled?

 

[Stormin08]

this has a 1.75" Level only. this was still stock Ranchos with the RL 1.75 level and RL upper arms.
like most, EVERY TRUCK VARIES SLIGHTLY

 

[Turkhntr]

This is stock with the 1.5 rough country level kit. You can tell the difference in looks ( no rake) but not in the drive of the vehicle, still drives just like when I bought it.

 

[Stormin08]

Poppy...Remember, the factory 2" is just that.. a 2" LIFT, GM raise both ends, and the truck has a rake designed into to accommodate hauling.

if it were designed for offroad driving at speeds, the tail would be slight lower for better handling and tracking

 

[NY3Wulf]

The rake does seem to vary. I started a thread on it. My '26 LTTB Duramax has only ~.5" rake but I have seen other TBs that are visually much more (1.5" plus). A 1" level would be about all I would want without a reverse-rake look.

 

[280Rem1]

The rake does seem to vary. I started a thread on it. My '26 LTTB Duramax has only ~.5" rake but I have seen other TBs that are visually much more (1.5" plus). A 1" level would be about all I would want without a reverse-rake look.

Mine too. Thankfully… I know the rake serves a purpose but am glad my TB LT rake is not prominent.

 

[NY3Wulf]

Mine too. Thankfully… I know the rake serves a purpose but am glad my TB LT rake is not prominent.

Hmm...I noticed you also have the 3.0 duramax (?). I wonder if heavier springs are put in with the diesels? I suppose it could also be that the V8s are (much) heavier than the 3.0, but I almost think it the other way around. If I believe the numbers in a quick search, they are nearly the same (450-500 lbs).

 

[280Rem1]

Hmm...I noticed you also have the 3.0 duramax (?). I wonder if heavier springs are put in with the diesels? I suppose it could also be that the V8s are (much) heavier than the 3.0, but I almost think it the other way around. If I believe the numbers in a quick search, they are nearly the same (450-500 lbs).

I measured the difference last night.
Rear wheel well is 3/4” higher than front wheel well.

 

[Bowtiefreak]

I am going to level mine. How much can I expect to pay to have it done?

 

[BigBlackie_'25TB]

The rake does seem to vary. I started a thread on it. My '26 LTTB Duramax has only ~.5" rake but I have seen other TBs that are visually much more (1.5" plus). A 1" level would be about all I would want without a reverse-rake look.

For my setup, this is what I went with because of the lift, tire size, etc.

Target Rake (Confirmed for Your Setup)
Goal: 1.25–1.5 inches of rake
Sweet spot: ~1.4 inches
This works best with:
305/70R18 (~34.8")
~5.3L weight bias up front
Caster: +5.5°
Camber: –0.2°
Toe: +0.10° total toe-in
Mixed street / off-road use
What Your Current Setup Usually Nets
On a Trail Boss with:
5" rear block
Deaver mini pack (replaces overload, adds lift + rate)
Typical rear lift outcome:
Block: ~5.0"
Deaver mini pack: ~1.0–1.25" (net, once settled)
Total rear lift: ~6.0–6.25 inches
Most trucks with a 4–6" front lift end up:
Front: ~5.0–5.5"
Rear: ~6.0–6.25"
That lands you right around 1.25–1.5" of rake once the mini pack settles.
So on paper, you’re already in the ideal window.