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  1. Vehicle Suspension
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  3. Express Van
  4. 2003
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FITS 2003 Chevrolet Express Van
Timbren Rear Suspension Enhancement System

Timbren Rear Suspension Enhancement System

Item # TGMRG25C
Retail:$316.90
Our Price: $269.36
You Save: $47.54
Vehicle Suspension
Confirmed to Fit
2003 Chevrolet Express Van

1500

2500

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Timbren vehicle suspension for your 2003 Chevrolet Express Van are available from etrailer.com. Installation instructions and reviews for your Chevrolet vehicle suspension. Expert service, and great vehicle suspension prices. etrailer.com carries a complete line of Timbren products. Order your Timbren Rear Suspension Enhancement System part number TGMRG25C online at etrailer.com or call 1-800-940-8924 for expert service.
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2003 Chevrolet Express Van - Timbren Rear Suspension Enhancement System

  • Jounce-Style Springs
  • Rear Axle Suspension Enhancement
  • Extra Heavy Duty
  • Timbren

6,000-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your Chevrolet Express Van. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.


Features:

  • Improves suspension, handling and safety
  • Provides additional support as needed so you always have a smooth, comfortable ride
    • Allows the leaf spring ample movement while cushioning light loads
    • Becomes more rigid as more weight is added
      • Increases stability - providing great performance while hauling heavy loads
      • Reduces vehicle sag
  • Works independently - side-to-side
    • Helps compensate for off-center loads
    • Reduces body roll when swerving and turning corners
  • Acts as shock absorbers, taking the brunt of bumps and rough roads
    • Extends the life of your vehicle's suspension


Specs:

  • Includes 2 Aeon hollow rubber springs, vehicle-specific brackets and hardware for simple installation
    • Replaces axle bump stops on frame
    • No drilling required
  • Capacity: 6,000 lbs
    • Do not exceed the vehicle's weight-carrying capacity
  • Designed to work with a suspension system that is in good working order
  • Limited lifetime warranty - satisfaction guarantee


An example of sag on a vehicle's rear axle under a heavy load

Whether you're hauling heavy loads in your bed or cargo area or you're towing a trailer, you will often see the rear of your vehicle sag while the front end rises. In these cases, the rear axle is handling not only the weight of the cargo, but also more of the vehicle's weight. Because less weight is on the front axle, the front tires are making less contact with the road. Overall handling - traction, steering, and braking - is negatively affected. But the resistance from Timbren's Suspension Enhancement System works with your factory suspension to keep your vehicle level and improve your driving experience.


Diagram of the Timbren spring installed

The Timbren system comes with custom-fit brackets that are bolted onto each frame rail above the rear axle. Hollow rubber springs are bolted to the bottom of the bracket and hang down to where the bottom of the spring sits, 1" above the axle. The inch of clearance allows the existing factory suspension to operate normally under light loads and standard terrain, ensuring the smooth, comfortable ride that you are used to.


Animation of a standard Timbren rubber spring

Timbren Suspension Enhancement Systems are designed to work progressively. When the hollow rubber springs are compressed, the convoluted design causes them to quickly collapse along the folds. Once the folds are compacted, the stacked barrel shape increases resistance, stiffening the suspension and keeping your vehicle level.


Timbren suspension system works to prevent body roll

Each hollow rubber spring works independently to support the driver's side or passenger's side of your vehicle. This is helpful when you swerve or make sharp turns. Each spring is activated when it is needed, so body roll is greatly reduced. The independent action also works well when you are hauling off-center loads.


An example of a trailers swaying

Because the vehicle handles better with the springs, less turbulence will be passed along to the trailer, and this helps to keep the trailer in line. Your driving comfort is further enhanced if the trailer does begin to sway (from a gust of wind or a passing semi), because the movement from the trailer is not transferred to your vehicle. This also works to make the sway subside more quickly.


An empty truck on a bumpy road without Timbren

Another great feature of the rubber construction is that the springs absorb most of the road shock, creating a smoother, more stable ride overall. Wear and tear on the factory suspension is also lessened because the rubber springs work to prevent bottoming out on rough roads.


Timbren Suspension Enhancement Compared to the Competition

Timbren's Suspension Enhancement Systems are much easier to install than air springs - there are no air hoses to run, no compressors or gauges to hook up, and no manual adjustments to make. The rubber construction makes Timbren's springs more elastic than similar products constructed of microcellular urethane. And more elasticity allows for a more comfortable ride because the rubber has more travel.



GMRG25C - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TGMRG25C Installation instructions

Customer Satisfaction Score:


Customer Reviews

Timbren Rear Suspension Enhancement System - TGMRG25C

Average Customer Rating:  4.7 out of 5 stars   (5995 Customer Reviews)

6,000-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.

by:

very good product ,received just in time and fit perfectly on my GMC savana 2000 .Be sure to clean the two receptacle thats help.
très bon produit , reçu dans les délais et s'ajuste parfaitement . Assurez-vous de nettoyer le receptacle cela facilite l'installation.

Francis

2/21/2024

after one year of use the rubber springs are like new , no damage , no crack.



by:

The Timbren rear bump stops for 2020 Suburban were great quality and fit perfectly in the replacement of the original ones with no problems. The old ones pulled right out by hand with no hassle. When I installed the new ones I put 2x4 blocks that I cut underneath the bump stops. Then hooked up the 6,400 lbs travel trailer with about 750 lbs of tongue weight on it and they pressed right into place. The Suburban was more stable because it had less swaying while towing. I also gained about 1 inche more in the fender gap which means less rearend saging.



by:
Chevrolet Suburban

The rear suspension enhancement has made a big difference in towing - I have a 2020 Suburban with the tow package. I have a 5400 pd travel trailer(dry weight) which I assume is around 6400 pds loaded. I noticed a major difference in stability after adding these especially over rough pavement and bridges. The Timbrens have mitigated the rear axle slamming against the frame. I use an Equalizer hitch with the system and added loaded rated tires. The package works great. It’s a big improvement towing.



by:

I bought these for my 2001 Chevy Suburban with a 5.3 V8 and four-wheel drive. These Springs have been absolutely amazing, on more than on one occasion I've loaded up three to four thousand pounds in the bed of my truck and the vehicle only sagged 2 in from the unloading height.

The Springs are better than I thought they would be and will absolutely be an addition to every work vehicle from now on.
I highly recommend them.

Michael B.

8/9/2021

springs are holding up well, they still work like new.



by:

2017 suburban. Easy to install but I used the handle of my floor jack to pry the new rubber into the cup as I wasn’t able to get it to stay by hand. Once started, I lowered onto wood blocks and it popped right in. The pictures show the original stop, installing the the new ones with wood, installed with 1” gap sitting with no external load, and loaded with the weight of my 33’ camper. They definitely help with sagging and a little with stability. It’s still more squirrelly than I like, but that may just be the towing properties of the suburban up against its max gross weight. Definitely recommend if you tow any weight with a suburban.



by:

Installation was somewhat simple, had to raise the truck and lower quite a few times for it to settle in fully even with the 2x4 and lubrication. I hooked up my loaded trailer and it didnt squat as low as it did. My original bump stops were completely rotted away so I cant wait to try it on the road with these new ones



by:

The difference between the factory bump stop and the Timbren system is phenomenal in both size and composition. The install went as planned per the instructions. Definitely a better ride now when loaded, including a Cargo Carrier on back with a loaded Kong Kooler. Definitely worth the time and effort to upgrade my Suburban!



by:

2003 Suburban z71 4wd rear install. Removal of old bump stop was simple. Passenger Timbren install fairly easy but took some time to get seated fully. Driver side, different story. The harsh angle of the bump stop cup required numerous tries to seat it straight. Install took about 3 hrs in total. In hind sight I should have just pulled the tires. Do they work to reduce sag....100%



by:
2004 Chevrolet Suburban

I have a 2004 Chevrolet Suburban that I intend to use as a replacement for my '99 Chevrolet heavy half ton Suburban. I will use it for my work vehicle as an electrical contractor. The new bump stops are a great solution for me to use my '04 half ton Suburban as a one ton Suburban. They were not as easy to install as the video, but they were not too difficult either.

Nicholas M.

9/18/2019

The Timbren Rear Suspension Enhancement System has worked out wonderfully for my 2004 Suburban. I use the vehicle as a work vehicle. I am an electrical contractor and haul about one ton of tools and supplies in it every day. It handles as if there is nothing in it.



by:

Excellent product, made a big difference



by:
2002 GMC Yukon XL

Size difference shocked me. Towing my wakeboard boat is much easier with less drag on my 02 gmc Denali xl. I have mine lifted 3" and didn't need the spacers even though I bought them. I would recommend this product to anyone who tows and has vehicle drag. My picture says it all.



by:

Installed on a 05 GMC Yukon. I went to put these in on a Saturday afternoon thinking I could do it in an hour or so. I was wrong. The stock bumper is 1/2 inch thick for the stock catch. The new is 1 inch thick. I used some silicone spray and cleaned the rust off the metal. I used the 2x4s as recommended and they slid right in. When I took the 2x4 out they slid right back out and I couldn't get them to stay in. I called customer service at 3 pm on Saturday and I was on hold for an hour and then hung up. After messing with this for 3 hours by that time I decided to just make it work. I ground notches into the top all the way around the same depth as the old bumper. Slid them in and they stayed. They sit direct on the stop and they do not have a 1 to 1 1/2 inch gap between them. Maybe I need new rear springs. Anyway they reduced body roll greatly ( I did the front at the same time). It rides much stiffer now, like my 01 F250, which is pretty rough. Does not squat with the trailer on though and makes for towing much better. Defiantly reduces sway. I will say this has been my worst experience with etrailer. I have purchased from them many times before but this one was just disappointing.



by:
2017 GMC Yukon

I own a 2006 GMC Yukon. We purchased a brand new 2017 32' Keystone Hideout Travel Trailer. The travel trailer remained well within our tow capacity when fully loaded. We also purchased and installed a weight distribution system. With all of these steps in place, the rear of our vehicle would sag. I purchased the Timbren SES Rear Suspension Enhancement System (Model TGMRG25C) from etrailer. The order arrived quickly within a few days. I was able to install myself in about 30 minutes. We just took the travel trailer out this past weekend. From the moment we hitched the trailer on, the difference was remarkable. No rear end sag at all. I would highly recommend this product.

Carlos C.

9/18/2018

A year later and the suspension enhancement system is working flawlessly.



by:
2005 Chevrolet Suburban

Product went in fairly easy. Taking the spare out provides a lot of room to work in. A medium size flathead screwdriver worked perfect to get the old ones out. I put one in from the bottom underneath and the other from the outside over the tire. Liked that the best. I was able to hold the product with one hand and slowly lower the floor jack with the other.
Haven't given it a good test yet. So far would rate the product as excellent. Would rate etrailer as excellent.
Joe

Jmacs53

6/17/2018

Very happy with the product!! Highly recommend!!



by:
Ford Explorer

Added these with a set 9f Monroe sensitive shocks on my express 1500 awd explorer conversion van. The pair has both raised the rear of the van. Stopped the bottoming out, and has a nice dampened feel over harsh bumps that used to bottom out the suspension.



by:

Vast improvement when driving on rough roads. My SUV use to bottom out and feel loose. With these it doesn't feel nearly bad and the back end doesn't drop low when loaded.



by:
2001 Chevrolet Suburban

They weren’t too bad to install. On my vehicle, 2001 suburban, they just slide into place, no bolting required. Seating them was a pain, but I got them in. The only thing I noticed is that I do not have clearance between the rubber stops and the axle pad once I put the suburban back on the ground. I haven’t towed yet, but I have notice that the ride is a little stiffer and the handling is much better..no roll. Service and delivery was great. I’ll buy from this company again.

Dawkins

6/1/2022

They have been great. Since there is no gap between the bumpers and the axle pad, our ride is a bit stiff. They really helped the handling while towing.



by:
2002 Chevrolet Tahoe

I installed these on my 2002 Chevy Tahoe just over a year ago and they are still fantastic. If your truck is banging or feels like a boat going down the road, I highly recommend installing the Timbren system. I did it myself in under an hour and what a difference.
Thank you etrailer!!!.

Rob G.

9/1/2021

Still 5 Stars!!! I run a mobile locksmith business and carry over a 1000 lbs in tools and product and the Timbrens are still working great. My Tahoe rides as smooth as ever!!!



by:

Installation was simple and I love the way these don't affect my vehicles comfort when it's not loaded. When it's loaded down its not squatting and handles perfectly. I've had Firestone air lift shocks before and won't have them again. You have to keep a minimum of 10 psi in them and it made my truck bounce like a basketball ball when it hit a bump. I highly recommend this product.



by:

Love the support when I load my car trailer up. Ride with the empty trailer is good also. I have not tried it with the truck without trailer hooked to it. But I am 100% happy with the way it’s supports the rear.

Roger

8/31/2020

Little bit of a ruff ride without my trailer hooked to it but not to bad. Would still recommend to anyone. Supports the trailer 10x better than without.



by:
2003 Chevrolet Suburban

My 2003 suburban would bottom out a lot when towing. I didn’t want to do air bags so I tried this. I really needed these as my original bump stops were rotted out and these made all the difference in towing . Great product even after a year of using them .



by:
2006 Chevrolet Avalanche

the product was exactly as advertized and installed easily when i used hand soap for lubricant i haven't hooked to my trailer yet but the difference between the stock parts and these is amazing

George H.

11/2/2017

Great I would would recommend it to anyone



by:

As an trailer employee who owns a truck and a small farm I have had the opportunity to test several different suspension products. I kept the Timbren on my truck for several different reasons. First they are maintenance free. Second they do not affect the unloaded ride of my truck. Third they were the best at handling the heavier loads I tow because of the farm. Finally when towing a trailer or with a heavy load in the bed the body roll is noticeably reduced in the curves on two lane roads.
Mine have been on the truck for several years now and they perform like the day they were installed



by:

Good option for my vehicle, fast delive ry!!



by:

Should have been original equipment instead of the wimpy thing GM provided on my 2002 Tahoe. Along with adding a 10,000 pound tow bar (more than I tow, but wanted the strength), I can confidently tow a two horse bumper pull. Ride without the trailer is also greatly improved. Highly recommended.


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See what our Experts say about this Timbren Vehicle Suspension

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    With a 600 lbs tongue weight on your travel trailer, I recommend the # FA92-00-0800 Fastway e2 Weight Distribution w/ 2-Point Sway Control. This system is for a tongue weight of 400-800 lbs. Since you are at 600 lbs that puts your tongue weight right in the middle of the range which is ideal when using weight distribution. This has a bolt on installation so no drilling is required. As for heavy duty shocks and adding a leaf to your leaf springs, we do not carry shocks or an add-a-leaf...
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  • Adding Timbren Suspension Enhancement System On a 2019 Yukon With The Magneride Air Suspension
    Adding any after market bump stop/jounce bumper could potentially raise the vehicle 1" because they are longer than the factory bump stop however, they are compatible with the Magneride system. Adding them can potentially effect how the vehicle rides when not towing and how the vehicles built in sensors for the air springs read the level of the vehicle. There are two types of bump stops/jounce bumpers available for the 2019 GMC Yukon 6.2L with the Magneride system. The Timbren Rear Suspension...
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  • Operation and Durability of Timbren Rear Suspension Enhancement for a 2007 Chevy Express Van
    Depending on how many springs you are able to add, you may still experience some sag or, on the other side, a very stiff ride. The Timbren Rear Suspension Enhancement System, # TGMRG25C, will prevent sag at the rear of the vehicle just as well if not better than additional leaf springs. This system will also not affect the unloaded ride of the van as additional leaf springs could. When installed, this system has a 6,000 pound capacity. They are made out of durable rubber and should last...
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  • Timbren Suspension Kit Fit for 2002 Cadillac Escalade All Wheel Drive
    For your all wheel drive 2002 Cadillac Escalade the part # TGMRG25C is the correct fitting Timbren kit. AWD and 4WD would mean the same thing in the context of what this kit fits.
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  • Replacement Timbren Rear Suspension Enhancement System for 2004 GMC Yukon XL Denali
    The Timbren Rear Suspension Enhancement System # TGMRG25C do not come with replacement springs available. Unfortunately you will need to get both springs to replace your missing spring. To ensure you don't lose another spring, I recommend using the Loctite Threadlocker 262 - High Strength # LT37420. This will keep the threaded bolt from vibrating loose over time.
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  • Cost Effective Suspension Enhancement System for a 2009 GMC Savana Van
    The most cost effective suspension enhancement system we have for a 2009 GMC Savana Van is the SumoSprings Solo Custom Helper Springs part # SSR-204-40 for 1500 models or part # SSR-205-47 for 2500 and 3500 models. These two options are more cost effective than the Timbren Rear Suspension Enhancement System part # TGMRG25C but they will also not provide as much support although will still work to reduce sag/squat.
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  • How To Prevent a 2009 GMC Savana Van From Sagging
    Yes, the Timbren Rear Suspension Enhancement System part # TGMRG25C which is a fit for a 2009 GMC Savana Van will reduce sag/squat therefore lift the ride height back to normal or if not normal, very close. The Timbren Rear Suspension Enhancement System is actually the most common solution to fix rear sag/squat as they not only work really well but are also easy to install and rather cost effective. If you were to ask me what I recommend, the Timbren Rear Suspension Enhancement System...
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  • Recommended Timbren Suspension Enhancement System For 2002 Chevrolet Tahoe
    If your 2002 Tahoe is a 4-wheel drive, the Timbren Vehicle Suspension, part # TGMRG25C will work great for you. This system helps with the sag and helps increase stability. If you have a 2 wheel drive Tahoe, the Timbren system that is designed for your Tahoe is part # TGMRYS4. This system will not increase the weight carrying capacity of your Tahoe and the Timbren system is designed to work with a suspension system in good working order. I have attached an installation video of the...
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  • How Does the Timbren Rear Suspension Enhancement System Attach?
    Yes, there is a bolt that goes all the way through that holds the Timbren Rear Suspension Enhancement System item # TGMRG25C in place. I have linked the instructions and an installation video below so you can see the steps involved and all the tools and hardware needed.
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  • Clearance Dimension for Installed Timbren Jounce Spring Kit on 2003 GMC Yukon XL
    It is not a problem for the Timbrens to rest on the axle but they may affect your unloaded ride characteristics as you note. You can try shifting around the cargo load in the truck to see if this changes the spacing between the spring and axle. As noted in the instructions, which are linked for you, there may be no visible gap when this kit is installed on certain medium- and heavy-duty vehicles. All suspension enhancement kits for your 2003 GMC Yukon XL, whether air bags or jounce springs,...
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  • Ideal Solution for Stopping Rear Suspension Sag While Towing with a 2005 GMC Yukon XL
    I have a solution for you, but it's not suspension enhancement for your 2005 GMC Yukon XL. Instead I would recommend a weight distribution system as not only does it help with sagging, but since it reduces the sag by redistributing some of the tongue weight up to the front axle of the trailer you also get increased handling and braking performance. The part # TGMRG25C is a fit though and would give you rear suspension support. The best way to pick out a weight distribution system is to...
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  • Correcting Rear Sag on 2006 Cadillac Escalade with Auto Leveling Shocks Towing Travel Trailer
    Since you are towing a travel trailer, I recommend using a weight distribution system to combat the rear end sag you are experiencing on your 2006 Cadillac Escalade. The weight distribution system works to distribute the trailer's tongue weight between the two axles of your Escalade, rather than a traditional hitch ball and ball mount that place all of the trailer's tongue weight on the back axle. Based on the information I found in the 2006 Escalade owner's manual, Cadillac recommend the...
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  • How to Correct Bottoming-Out of Rear Axle on 4-Inch Lowered 2005 Chevrolet Tahoe 4WD
    If your 2005 Chevrolet Tahoe has a 4-inch lowered suspension, reduced suspension travel - and the tendency for bad bumps to make themselves known - is a natural outcome of shorter shocks. One of my associates here at etrailer was able to confirm for me that the truck did come with short coil springs to start with. Timbren rubber jounce springs will not help with this issue because they are taller than your factory bump stops and will actually make contact with the axle sooner. I checked...
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  • How to Reduce Vehicle Sag on a 2004 GMC Yukon
    The maximum gross trailer weight (GTW) and tongue weight (TW) capacity of your 2004 GMC Yukon will vary from 5,700 lbs to 12,000 lbs depending on chassis (1500,2500,3500), drive (2WD,4WD), gear ratio (3.42,3.73,4.10), and GCWR (Gross Combined Weight Rating). The easiest way to tell the true towing capacity of your vehicle would be to find both the GCWR and the Gross Vehicle Weight (GVW). These figures can be located on the information tag inside the drivers door jamb. If you subtract the...
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  • Solution For Helping Rear Suspension of 2002 Chevy Suburban that Sags When Towing
    If you are experiencing sag while towing I have a better solution than suspension enhancement. Instead I would recommend a weight distribution system because not only does I stop the sag it distributes some of the tongue weight of the trailer up to the front axle of the tow vehicle which allows the handling and braking to improve. The best way to pick out a weight distribution system is to base it off of the loaded tongue weight of the setup when it is loaded and ready to tow. This figure...
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  • Timbren Springs Not Lining Up with Axle Bracket on 2004 GMC Yukon XL
    Is it the additional spacers that are causing the main part of the spring to out of alignment compared to the stock bump stops on your 2004 GMC Yukon XL? Are the Timbren springs fully seated in the bump stop cups? On these vehicles it is hard to manually push them into place. We usually use a block of wood and slowly put weight back on the axle so that the wood and the weight will push the springs into the bump stop cup. And I know you have the Z71 springs but is the Yukon itself 4-wheel...
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  • Suspension Enhancement Recommendations for a 2005 Chevy Express Van 1500
    The first thing I would do is check that the suspension on your 2005 Chevy Express Van is in good working order. Suspension enhancement products are designed for systems that are in good working order. The springs you referenced will not fit a 2005 model. But, depending on the problem you are having there are products that will fit. I would go with a Timbren system for the front, # TGMFK15A, and rear, # TGMRG25C. What these systems will do for you is prevent bottoming out, provide extra...
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  • Can SumoSprings Be Added To 2002 Chevrolet 4WD Tahoe With Front And Rear Timbrens In Place
    The first thing you will want to do is inspect your suspension system to make sure it is in good working order. If you have a weak suspension and relying on the Timbrens you already have installed, you will get more bounce than normal. The Timbrens are intended to help with a properly working system to help add support when carrying heavy loads. I called my contact at Timbren and they told me that adding additional support to the rear coil springs on your Tahoe like part # CSS-1094R will...
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  • Weight Distribution System Recommendation for a 2002 GMC Yukon Towing a Horse Trailer
    I have a better solution for you, but first I must tell you that Timbren and other suspension enhancement solutions are designed for a vehicle needing additional support in the bed or rear cargo area for the vehicle. What you need when towing a heavy trailer is a weight distribution system. Any time you are towing a trailer that weighs more than 50 percent of the tow vehicle we recommend weight distribution. WD systems are known to help with trailer sway, especially if a sway control system...
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  • Comparing Timbren Rear Suspension Systems TGMRYS4 and TGMRG25C for 2005 Chevy Suburban
    The correct Timbren Rear Suspension Enhancement System for a 2005 Chevrolet Suburban part # TGMRYS4. The Timbren Rear Suspension Enhancement System part # TGMRG25C will fit as well but is taller so it will engage sooner.
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  • Adding Rear Helper Springs to a 2001 GMC Yukon XL with Auto-Leveling Shocks
    I do have a solution for you but there are no air bag systems that work on the 2001 GMC Yukon XL with the auto-leveling feature. What you can do is use some Timbren springs which will engage only if they need to (if the vehicle sags enough). With the auto-leveling system and the weight distribution adding the Timbren springs will make the rig very solid. If you have a 1500 4x4 use # TGMRG25C If you have a 1500 2-wheel drive use # TGMRYS4 If you have a 2500 4x4 use # TGMRSB4S And if you...
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  • Should Suspension Enhancement and Weight Distribution be Used Together to Tow with 2001 Chevy Tahoe
    Since you are already using weight distribution I would not recommend adding suspension enhancement because the two systems tend to work against each other. But in general, using suspension enhancement like Timbren Springs # TGMRG25C does improve vehicle ride quality, reduces side to side roll, and will help keep the vehicle level when there is a load in the vehicle or when towing. If you are having issues with steering and ride quality it could be that you need to make some adjustments...
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  • Which Timbren Rear Suspension Kit Fits 1999 Chevy Express 1500 Rear Axle
    Yes, the Timbren rear suspension enhancement kit part # TGMRG25C does for sure fit your 1999 Chevy Express 1500 van rear axle.
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