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Discussion Starter · #1 · (Edited)
As the AWD 1500 wasn't produced for many model years, they are not very common at all, and most people do not realize the suspension differences in this van VS the 2wd models.

Same goes with parts listings on various sites and auto stores, alot of times there is no AWD selection when differentiating parts in the lookup software.

The front suspension is a Torsion Bar system, it is actually the same a the Chevy Avalanche, specifically the 2002 model year. Keep in mind the Avalanche comes with or without an electronic controlled adjustable suspension system, and when buying crossing these parts for van use be sure to make sure you are looking at the WITHOUT-Electronic Ride control model.

There have generally been a very poor selection of shock options for the front of these AWD vans listed when looking at upgrades.

But I've been through a few sets of shocks on my van since 2008 with 19x,xxx miles I've put on it. Daily driving it, loaded with tools and towing a car trailer most of the time. And I've always wanted to upgrade to Bilsteins but could never find an application for this van until after much research over the years realized this van is actually an Avalanche..

So in an attempt to ease the pain on other guys that love their AWD vans and want to at least know what options are out there for front shocks here is a list of some popular quality shocks.

AWD SPECIFIC FRONT SHOCKS: Max/Min=Stroke

ACDELCO 5405063 OEM Premium Monotube 15.31/10.32 = 4.99
ACDELCO 530441 OEM Twintube 15.07/10.44 = 4.63
ACDELCO 19257308 OEM Monotube 15.23/11.12 = 4.11
KYB KG5040 Gas-A-just MonoTube 15.11/10.78 = 4.33
KYB 341343 Excel-G TwinTube 15.15/10.31 = 4.84
KYB 565067 MonoMax Monotube Heavy Duty 14.92/10.83 = 4.09
Bilstein 5100 Monotube 24-186643 (w/ 2" Lift) 16.30/12.40 = 3.90
Bilstein 4600 Monotube 24-065009 15.43/10.89 = 4.54

REAR:
ACDELCO 5405043 OEM Premium Monotube 24.31/14.72 = 9.56
ACDELCO 51929 OEM Coilover/Load Assisting TwinTube 23.55/14.19 = 9.36
KYB 565103 MonoMax Monotube Heavy Duty 23.35/15.28 = 8.07
Bilstein 4600 Monotube 24-024815
 

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Discussion Starter · #2 ·
After finally figuring out what Bilstein 4600 model would fit, I immediately purchased a set and I can only wish I had be able to switch to them a decade ago... I've had them on other trucks I've owned and they are every bit as good as all the hype from basically everyone that runs them.

They are not hard or harsh, they absolutely helped the soft spongy feeling that is inherent to the Torsion Bar Suspension, yet the ride is still smooth loaded or unloaded. Worth every penny.

Here they are next to the KYB that is sold as the specific model for the AWD vans....


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Amazing. Been looking for 5100 part numbers for a week.

So- 2" lift
Front 5100- Part number is 24-186643 ( should fit with no spacer/ adapter/ lengthener?)

Rear- What 5100 part # is correct then ?
 

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Discussion Starter · #5 · (Edited)
Would you ever run different shocks up front than in rear? 5100 up front and yellows in rear? Amazon has the set of 4, with the 5100 part number listed for front- 24-186735 and for rear: 24-186742


The part numbers above apply to a 2500 Avalanche not a 1500 model. The fronts (24-186643) will not work because the lower mount is a standard eyelet not a Clevis. And the Clevis mount is the only reason these awd vans front shocks don't have a wide array of available options.

Those 5100 rears are very long at 26.15" vs 20.89 or 23.23 of the two 4600 options.

The second problem with those rears is they are eyelet mount at the top, where the AWD vans use a BarPin top mount. (although you may be able to press a barpin through the top mount. It's doable on some shocks, not sure one the 5100 bushing if it will give enough to do it.)

Per bilstein tech support directly, they say the 4600 and 5100 are equal shocks and the 5100 is just longer than it's equivaent 4600 model, if your truck is lifted then the longer shock is used, and as well as on the front coilspring mounted applications you can adjust the height on the shock body of a 5100. And they said there is no concern mixing 4600 and 5100 on the vehicle.


Here are two 4600 models that work for the AWD Rear and has the top BarPin mount:

Bilstein 4600 Monotube 24-024815 20.89/13.29
Bilstein 4600 Monotube 24-221948 23.23/14.8

This would be the closest 5100 Rear shock that could be used, but you would have to try to press a BarPin into the top bushing to use it, which should be doable.

Bilstein 5100 Monotube 24-187237 24.33/15.55
 

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I have a chevy express van 101, and I replace my shocks with Bilstein 24-187435 Shock. It comes with a monotube design which can improve the overall performance of the vehicle. This is perfect for heavy vehicles and gives a comfortable ride on all road conditions. It's worth buying because the company provides you a lifetime warranty.
 

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Would you ever run different shocks up front than in rear? 5100 up front and yellows in rear? Amazon has the set of 4, with the 5100 part number listed for front- 24-186735 and for rear: 24-186742

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Amazing. Been looking for 5100 part numbers for a week.

So- 2" lift
Front 5100- Part number is 24-186643 ( should fit with no spacer/ adapter/ lengthener?)

Rear- What 5100 part # is correct then ?

Did you ever figure out a set a rear shocks that works with the lift? I've got an 04 1500 Express with a 2 inch lift. Thanks!
 

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Yep! Been running a while now:

Bilstein Set of 4 Front/Rear Monotube Shock Absorbers for 06-10 Hummer H3

Manufacturer Part Number:
24-186643/24-185615
 

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Yep! Been running a while now:

Bilstein Set of 4 Front/Rear Monotube Shock Absorbers for 06-10 Hummer H3

Manufacturer Part Number:
24-186643/24-185615
Do they ride really stiff? I do a lot of driving on dirt roads and I've gotten pretty used to the squishy old shocks.
 
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