About TRQ: TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
Our direct fit gas-charged strut assemblies help to restore your vehicle’s handling and ride quality to just like new.
Attention California Customers:
WARNING: This product can expose you to chemicals including Chromium (Hexavalent Compounds), which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
This part fits
10 vehicles spanning 2002-2009.
Fits these Makes
Select vehicle
Year
Make
Model
Description
2004-2007
Buick
Rainier
Buick Rainier Rear Driver & Passenger Side 2 Piece Shock Absorber Set TRQ SBA60143
2003-2006
Chevrolet
SSR
Chevrolet SSR Rear Driver & Passenger Side 2 Piece Shock Absorber Set TRQ SBA60143
2002-2009
Chevrolet
Trailblazer
Chevrolet Trailblazer Rear Driver & Passenger Side 2 Piece Shock Absorber Set TRQ SBA60143
2002-2006
Chevrolet
Trailblazer EXT
Chevrolet Trailblazer EXT Rear Driver & Passenger Side 2 Piece Shock Absorber Set TRQ SBA60143
2002-2009
GMC
Envoy
GMC Envoy Rear Driver & Passenger Side 2 Piece Shock Absorber Set TRQ SBA60143
2002-2006
GMC
Envoy XL
GMC Envoy XL Rear Driver & Passenger Side 2 Piece Shock Absorber Set TRQ SBA60143
2004-2005
GMC
Envoy XUV
GMC Envoy XUV Rear Driver & Passenger Side 2 Piece Shock Absorber Set TRQ SBA60143
2003-2008
Isuzu
Ascender
Isuzu Ascender Rear Driver & Passenger Side 2 Piece Shock Absorber Set TRQ SBA60143
2002-2004
Oldsmobile
Bravada
Olds Bravada Rear Driver & Passenger Side 2 Piece Shock Absorber Set TRQ SBA60143
2005-2009
Saab
9-7X
Saab 9-7X Rear Driver & Passenger Side 2 Piece Shock Absorber Set TRQ SBA60143
Part Interchange
Brand Label
Part Number
KYB
343395
Monroe Shocks & Struts
37241
Gabriel
G63842
Unity Automotive
251020
GMC
15125520
Oldsmobile
15159038
GMC
19177778
Buick
15789591
GMC
15172341
GMC
15098142
Buick
15198311
GMC
19180755
GMC
15198893
Buick
15789588
GMC
15058617
GMC
15894447
Buick
15098727
GMC
15098726
Oldsmobile
15098726
Buick
15098726
GMC
15058616
Buick
15125520
GMC
19177207
GMC
19180749
GMC
19179512
GMC
19180776
Buick
15125521
GMC
15789559
GMC
15789589
GMC
88982347
GMC
15098727
Oldsmobile
15098725
Oldsmobile
15198311
GMC
15198311
GMC
19180754
Buick
15172340
GMC
19177781
Oldsmobile
15172340
GMC
15746779
GMC
15172342
GMC
15789591
GMC
19180774
Buick
15789589
Buick
15195073
GMC
15789590
GMC
19177786
Buick
15789590
Oldsmobile
15159648
Buick
15098725
Buick
15198894
GMC
15098725
Buick
15172342
GMC
15159648
GMC
15159038
GMC
15172340
GMC
15789588
Oldsmobile
15198893
GMC
25820704
GMC
15195073
Oldsmobile
15198894
Buick
15198893
Oldsmobile
15206892
GMC
15098143
GMC
15125521
Oldsmobile
15098727
GMC
15198894
GMC
19180752
Oldsmobile
15172341
Buick
15206892
GMC
15206892
GMC
15172343
GMC
15195074
Oldsmobile
15172342
Chevrolet
37242
Unity Automotive
251120
This item may be interchangeable with parts from other brands with the above part numbers.
This information is provided only for reference and does not guarantee that the item you are
purchasing is identical to parts with part numbers from the brands listed above.
To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
FREE Shipping is standard on orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii and Alaska.
Shipping is not available to a P.O. Box, APO/FPO/DPO addresses, US Territories, or Canada for this item.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii.
Final shipping costs are available at checkout.
How To Replace Rear Shock Absorbers 2002-09 Chevy Trailblazer
How to Replace Shock Absorber 2002-06 GMC Envoy XL
Created on:
Tools used
Socket Extensions
18mm Wrench
Jack Stands
18mm Socket
Ratchet
Floor Jack
1/2 Inch Breaker Bar
1. Remove the shock absorber
It is recommended to raise and secure the vehicle, but it is possible to do this with the vehicle on the ground.
Remove the 18 mm bolts at each of the strut by securing one end of the bolt with the wrench and use the socket and ratchet to remove the bolt from the nut.
2. install the new shock
Insert the shock into its mount and thread the bolt though.
Repeat with the bottom end of the strut.
Tighten the nut and bolts with your socket and ratchet and wrench
Brought to you by 1AAuto.com, your source for quality replacement parts, and the best service on the Internet. In this video, we're going to show you rear shock removal and replacement on this 2004 Trail Blazer, same as most of these mid-size SUVs. Tools you'll need are 18 mm socket with a ratchet and extension, and also an 18 mm wrench, and you probably would want jack and jack stands to raise and support the vehicle, but not totally necessary.
So to replace your rear shocks, as you can see I still have the tire on the truck, and you could actually do this on the ground, although it will cause a little clearance issue as you try and remove this lower bolt. But it's possible, you can do it on the ground. So there's that lower bolt, and there's a bolt up high right there. And if you are jacking your vehicle up, you can see my lift is under the frame. And then I have a bottle jack right here that's supporting the axle. You just want to give a little support of the axle so it doesn't drop down when you release the shock. What you probably want to do is take a couple extensions, that way you can work right outside your tire. And it'll come right apart, as you can see.
This is an 18mm again, and you might need two wrenches. One for here, and one to hold. But little trick... if all you have is wrenches, hook another wrench onto the end of that one, and that gives you some extra leverage. And like I said, on the ground this is going to be somewhat more difficult. Now I'm going to cheat 'cause I've got 18mm deep socket and an impact wrench. Comes right out. Back up top here. So that's how your shock comes out. Again, the shocks on this vehicle are fine. Just showing you how to do it. So to reinstall it, you want to put the top back up in. Put this top bolt in first. Now the bottom. Put that back in. Start that nut on. A good rule of thumb for these is get it about as tight as you can get it with a ratchet like that. And up to the top here. Again, just got my ratchet on here. That's tight as I can get it with the ratchet.
We hope this helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll free, 888-844-3393. We're the company that's here for you on the Internet and in person.
Tools used
Socket Extensions
18mm Wrench
Jack Stands
18mm Socket
Ratchet
Floor Jack
1. Removing the Shock
If you are raising the vehicle, support it by the frame
Loosen the lower 18mm nut and bolt from the shock
Loosen the upper 18mm bolt from the shock
If you have raised the vehicle, support the axle with a jack
Pull the bolts out of the shock
Pull the shock down and out
2. Installing the New Shock
Put the new shock into place
Thread the top 18mm bolt into the shock by hand
Push the shock up into place
Thread the lower 18mm bolt into the shock
Tighten the top 18mm bolt preliminarily
Fasten the 18mm nut onto the lower 18mm bolt
Tighten the lower 18mm nut and bolt preliminarily
If you raised the vehicle, lower it to the ground
Start the vehicle
Allow the air suspension to inflate
Check the ride height
Tighten the two 18mm bolts
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace the rear shocks on this 2003 GMC Envoy. It's the same procedure for all these SUVs: Envoy, trail blazer, Ascender, Ranier,. We show you the right side; the left side's the exact same procedure. Always replace your shocks in pairs, and you'll need new rear shocks from 1AAuto.com, 18mm socket and ratchet with an extension, and it helps to have a deep socket, an 18mm wrench. You can do this without even jacking up your vehicle, but for the video, to make it easier, we do put it up on a lift and use a jack.
Your rear shock is held in with an 18mm bolt up here and an 18mm bolt down here. Using an 18mm socket and ratchet, and 18mm wrench, just loosen up this lower bolt and hit it out as far as you can with the wrench. We'll fast forward as he loosens up the top bolt. You don't have to entirely remove them until you've loosened both of them. That makes it a little bit easier. If you are using jack and hack stands, have the jack stands supporting the frame of the vehicle, and then put some upward pressure on the rear axle with your jack to take some of the load off of the shock. I'm just watching the top of the shock to see it compress some. Now with the bolts loosened, you can pull the lower bolt out and then pull the top bolt out. You see that? Then it pulls free.
Up top, is the old shock. Below it, is the new one from 1A Auto. You can see they're identical, and they'll fit exactly the same. Feed your new shock up into place and replace that top bolt to hold it in place. Now, you'll need to line up the lower hole and this I only have to push up a little bit. If you have your vehicle on the ground you'll have to push it up more, push the shock up and then put the bolt through. We'll fast forward as Mike tightens those both up. Right now you're just tightening them preliminarily, although you can, if you're working without a jack and jack stands, and the vehicle's on the ground, you can tighten them up. What we do is we start up the vehicle just to give the air suspension a chance to inflate and make sure the vehicle's at its correct ride height. Then once we know it's at the correct ride height tighten up the bolts for the shocks.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
SBA60143
In Stock
Product Reviews
4.7/ 5
★★★★★★★★★★
23 reviews
5★
91%
4★
0%
3★
0%
2★
9%
1★
0%
★★★★★April 16, 2026
Very good quality product in my opinion.
Fist, the shipping delivery was fast!
And the TRQ shock absorbers feel very good on my car. I would recommend this product to anyone.
★★★★★September 26, 2024
Nice
Perfect!!!!! Easy install very good quality! Couldn't be happier with my purchase ??
★★★★★August 17, 2023
Rear suspension
Worked great
★★★★★May 31, 2023
Great shock replacements!
Great shock replacement and fixed my issues with the 05 trailblazer hopping on bumps and pot holes.
★★★★★January 14, 2023
Fit right on more well constructed than the original ones
★★★★★February 8, 2022
1 A auto is that, 1st. In quality and service
I have bought auto parts before on many occasions and have always been satisfied with the quality and shipping. I have never had any problems when it came to the installation everything fit great. I A auto is always my first choice.
★★★★★December 21, 2021
Parts arrived as promised and easily installed. Thanks
★★★★★November 4, 2021
Theyre perfect
★★★★★June 21, 2021
I highly recommend 1AAUTO
These shocks are a perfect fit, well made and very inexpensive!
I highly recommend 1AAUTO as I have used their parts often, with great success.
★★★★★June 9, 2021
Easy to install, but leaks.
I purchased the full 4 piece set, fronts and rear. Installed rear. Then front after a few months. With less then 40k miles, one rear strut starting leaking. So time to change again.
Showing 1–10 of 23 reviews
Customer Q&A
Got a question about this part? Post it and get answers from our team.
tnyJuly 2, 2020
whats the size/length of the rear shocks?
Thank you for your inquiry. Actual Measurements are not listed or available. Our parts are exact replacements for your vehicle's OEM parts. As long as your year, make, and model match up with our listing, these parts will directly fit and function like the originals. Please let us know if you have any other questions. Thank you!.
Adam · July 2, 2020
SMay 7, 2019
Are these the correct shocks that pair with the air self leveling rear end on my 2007 SS3 Trailblazer? (I just purchased new air bags from this site to replace on same vehicle)
This is for standard suspension and will not be able to fit for a vehicle with the self leveling suspension.
Emma · May 7, 2019
Showing 1–2 of 2 questions
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