2018 GMC Sierra 1500 Rear Shock and Struts

Your 2018 GMC Sierra 1500 might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Rear Shock and Struts you desperately need.

We currently carry 13 Rear Shock and Struts to choose from for your 2018 GMC Sierra 1500, and our inventory prices range from as little as $34.99 up to $203.99.

On top of low prices, Advance Auto Parts offers 5 different trusted brands of Rear Shock and Struts for the 2018 GMC Sierra 1500. We only sell parts from trusted brands like Monroe so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 792 reviews on our Rear Shock and Struts for the 2018 GMC Sierra 1500 from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Rear Shock and Struts stock in-person!

Rear Shock and Struts for Your 2018 GMC Sierra 1500

Rancho – RS9000XL Shock Absorber (Part No.RS999198)

RS9000XL Shock Absorber

from

$161.99
Get premium control and performance with Rancho RS9000®XL shocks. Recognized as the first nine-position manually adjustable ride control series in the off-road market, RS9000XL shocks are ideal for on- and off-road use, towing and more.

Product Features:
  • NINE LEVELS OF PERFORMANCE — Nine-position easy-to-adjust knob allows customized damping control and firmness for on-road and off-road flexibility
  • DESIGNED FOR HARDWORKING VEHICLES — Ideal for stock or lifted trucks, SUVs and Jeeps that tow, haul or go off road
  • INDUSTRY FIRST — Recognized as the first nine-position manually adjustable shock series in the off-road market
  • REDUCES FADE — Nitrogen gas pressurized to 120 PSI to minimize air-to-oil mixture and reduce damping performance fade and foaming
  • STRONG AND DURABLE — Features an application-specific 18mm nitro-carburized piston rod to resist scuffs and corrosion, double-welded loops at stress areas and 1.25-in. sintered iron piston for enhanced structural integrity
  • HANDLES EXTREME TEMPERATURE CHANGES — Up to 2.75-in. tri-tube body (application specific) filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F
  • SMOOTH PERFORMANCE — Polyurethane rebound bumper and bushings and graphite-filled fluon-banded piston help absorb ride harshness and enhance responsiveness to changing road conditions for an overall smoother ride
  • BUILT TO LAST — Low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression while the long-lasting premium liquid metallic finish and polyvinyl protective boot ensures long life
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Monroe – Reflex Monotube Shock Absorber (Part No.911533)

Reflex Monotube Shock Absorber

from

$89.99
Specifically engineered to provide better handling, control and performance for light trucks and SUVs, Monroe® Reflex® monotube shocks feature a high-pressure gas to provide additional spring rate, helping to maximize damping efficiency and control.

Product Features:
  • MAINTAINS VEHICLE CONTROL — Monotube technology maintains vehicle control over bumps, dips and potholes for vehicles originally equipped with monotube shocks and struts
  • IMPROVED IMPACT ABSORPTION — Hydraulic lock-out isolates suspension impact and helps maintain vehicle integrity (where applicable)
  • CONSISTENT RIDE — High temperature OE all-weather fluid contains special additives to assist with extreme temperatures and help reduce oil breakdown
  • EXCELLENT RESPONSE AND STABILITY — High-pressure nitrogen charge provides a quicker response for excellent vehicle control
  • BUILT TO LAST — High-strength shock housing and hardened, chrome-plated piston rod provide durability and longer service life
  • CONTROL AND DURABILITY — Fluon-banded piston provides consistent sealing between piston and pressure tube for better control and increased durability
  • REDUCED SHOCK FADE AND AERATION — Free floating dividing piston separates shock fluid from high-pressure gas charged to reduce shock fade and aeration
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Rancho – RS5000X Shock Absorber (Part No.RS55198)

RS5000X Shock Absorber

from

$85.99
Featuring a unique, exclusive valving system and advanced compression functionality, Rancho® RS5000®X shocks deliver improved overall on- and off-road handling and performance.

Product Features:
  • IMPROVED HANDLING AND PERFORMANCE — Cross Tuned technology featuring exclusive rebound valving system and advanced compression phase improves overall handling and performance on and off road
  • MINIMIZES ROUGH RIDE — Exclusive Progressive Engagement Valving is custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimizes a rough ride
  • STRONG AND DURABLE — Features a 16mm nitro-carburized piston rod to resist scuffs & corrosion, double-welded loops at stress areas, 35mm sintered iron piston for enhanced structural integrity and polyvinyl protective boot
  • HANDLES EXTREME TEMPERATURE CHANGES — Large twin-tube body filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F
  • SMOOTH PERFORMANCE — Polyurethane rebound bumper and rubber bushings help absorb ride harshness while the fluon-banded piston enhances responsiveness to changing road conditions for an overall smoother ride
  • REDUCES FADE — Nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixture to reduce damping performance fade and foaming
  • MAINTAINS VEHICLE CONTROL — Compression Control Valve is custom-tuned for each vehicle to regulate fluid transfer to absorb impacts without disc flutter and help maintain shock motion control
  • BUILT TO LAST — Low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression while the application-specific piston delivers heightened control of shock motion due to the expanded piston area
  • Rebound Bumper
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Rancho – RS5000 Shock Absorber (Part No.RS5198)

RS5000 Shock Absorber

from

$68.99
The shock that started it all! Rancho® RS5000 series has been the shock of choice for light trucks and sport utility vehicles since 1985. Available for stock and lifted applications, RS5000 is ideal for on and off-road use, at an affordable price.

Product Features:
  • Ten-stage velocity sensitive valving – Provides tuning specific for each vehicle
  • 5/8-in. (16mm) diameter piston rod (select applications) – Adds strength and durability. Size varies by application.
  • 1 3/8-in. (35mm) diameter piston (select applications) – Ensures performance in any environment
  • Protective boot included – Protects the shock rod and oil seal
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Rancho – RS5000X Shock Absorber (Part No.RS55297)

RS5000X Shock Absorber

from

$78.99
Featuring a unique, exclusive valving system and advanced compression functionality, Rancho® RS5000®X shocks deliver improved overall on- and off-road handling and performance.

Product Features:
  • IMPROVED HANDLING AND PERFORMANCE — Cross Tuned technology featuring exclusive rebound valving system and advanced compression phase improves overall handling and performance on and off road
  • MINIMIZES ROUGH RIDE — Exclusive Progressive Engagement Valving is custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimizes a rough ride
  • STRONG AND DURABLE — Features a 16mm nitro-carburized piston rod to resist scuffs & corrosion, double-welded loops at stress areas, 35mm sintered iron piston for enhanced structural integrity and polyvinyl protective boot
  • HANDLES EXTREME TEMPERATURE CHANGES — Large twin-tube body filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F
  • SMOOTH PERFORMANCE — Polyurethane rebound bumper and rubber bushings help absorb ride harshness while the fluon-banded piston enhances responsiveness to changing road conditions for an overall smoother ride
  • REDUCES FADE — Nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixture to reduce damping performance fade and foaming
  • MAINTAINS VEHICLE CONTROL — Compression Control Valve is custom-tuned for each vehicle to regulate fluid transfer to absorb impacts without disc flutter and help maintain shock motion control
  • BUILT TO LAST — Low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression while the application-specific piston delivers heightened control of shock motion due to the expanded piston area
  • Rebound Bumper
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Skyjacker – Hydro Shock W/Red Boot (Part No.H7036)

Hydro Shock W/Red Boot

from

$55.99
HYDRO H7000 series shocks are recommended for multiple shock applications and mild to moderate off-road use. Skyjacker(R) hydro shocks, Skyjacker(R) suspensions offers you a high quality shock absorber with true velocity sensitive valving. Shock absorbers, or spring dampers as it is called everywhere else except in the U.S, control the rate at which suspension springs compress and rebound. As the shock is pushed together, this is called bump or compression. As the shock expands, this is called rebound or extension. Absorbing the shock of bumps and suspension loading is actually performed by the springs in the suspension. The shock real job is controlling the energy stored in the springs. The performance specific internal components of Skyjacker shocks respond to the on- and off-road conditions instantly. Whether you are going over rough or smooth terrain at slow or fast speeds, the true velocity sensitive valving produces a stable, controlled level of resistance for better handling, improved stability, and maximum comfort. The technological innovations of these durable, long lasting shocks from Skyjacker(R) deliver a noticeable advantage over the original equipment and other shock dampeners. Skyjacker shock absorbers deliver a safe, comfortable ride with improved handling and stability. They keep the tires in contact with the terrain and put you in control of the road ahead

Product Features:
  • Hydraulic Action. Leak Proof Seal Prevents Hydraulic Fluid From Passing Around Piston Head For A Consistent And Reliable Ride
  • Multi Stage Velocity Sensitive Valving
  • Twin Tube Construction. DOM Tubing Reduces Internal Wear For Longer Product Life
  • Bonded Iron Piston For Durability And Longer Shock Life
  • Chromed Piston Rod Features Micro Polished Shaft For Improved Product Life And Performance
  • Orifice Disk For Axle Control In Any Condition
  • Red Polyurethane Bushings
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KYB – Gas Shock (Part No.345074)

Gas Shock

from

$129.99
Ride Comfort may be important, but restoring a vehicles Ride Control, stability, stopping, lane change responsiveness and handling is critical. KYB Excel-G Shocks and Struts are designed for the most important performance purpose: Restoring the vehicles original capabilities. KYB is a world leading supplier of shocks and struts to new vehicle manufacturers and the Excel-G is made on the very same KYB OE assembly lines, uses the same OE quality components and is calibrated to restore original, designed performance, not change it. That has earned Excel-G the classification: OEA (Original Equipment for the Aftermarket). The KYB Excel-G is a nitrogen gas-charged, twin-tube design that includes every quality component that our global OEM products include and it is the preferred choice by professional technicians.

Product Features:
  • KYB Recommended Orem Replacement Shock
  • The KYB Excel-G Helps Restore The Designed Control And Handling Of Your Gm Truck
  • The KYB Excel-G Uses A Triple Lip Fluid Seal To Reduce The Chance Of Oil And Gas Leaking Out
  • Vehicle Specific, Hand Assembled, In-House Damping Valves Correctly Manage Tire Contact, Steering Response And Body Movement
  • Electronic Safety Systems Depend On The Suspension, Brakes And Tires Operating As The Vehicle Manufacturer Intended. The KYB Excel-G Helps Keep Electronic Safety Systems Performing As Designed.
  • KYB Has The Strongest And Thickest Strut Bodies And Brackets In The Industry; Minimizing Flex To Maintain Correct Alignment In All Conditions
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Suncore – Shock Absorber (Part No.12S251500)

Shock Absorber

from

$34.99
Shock Absorber

Rancho – RS9000XL Shock Absorber (Part No.RS999297)

RS9000XL Shock Absorber

from

$161.99
Get premium control and performance with Rancho RS9000®XL shocks. Recognized as the first nine-position manually adjustable ride control series in the off-road market, RS9000XL shocks are ideal for on- and off-road use, towing and more.

Product Features:
  • NINE LEVELS OF PERFORMANCE — Nine-position easy-to-adjust knob allows customized damping control and firmness for on-road and off-road flexibility
  • DESIGNED FOR HARDWORKING VEHICLES — Ideal for stock or lifted trucks, SUVs and Jeeps that tow, haul or go off road
  • INDUSTRY FIRST — Recognized as the first nine-position manually adjustable shock series in the off-road market
  • REDUCES FADE — Nitrogen gas pressurized to 120 PSI to minimize air-to-oil mixture and reduce damping performance fade and foaming
  • STRONG AND DURABLE — Features an application-specific 18mm nitro-carburized piston rod to resist scuffs and corrosion, double-welded loops at stress areas and 1.25-in. sintered iron piston for enhanced structural integrity
  • HANDLES EXTREME TEMPERATURE CHANGES — Up to 2.75-in. tri-tube body (application specific) filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F
  • SMOOTH PERFORMANCE — Polyurethane rebound bumper and bushings and graphite-filled fluon-banded piston help absorb ride harshness and enhance responsiveness to changing road conditions for an overall smoother ride
  • BUILT TO LAST — Low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression while the long-lasting premium liquid metallic finish and polyvinyl protective boot ensures long life
See More

Monroe – Magnum Light Truck Shock Absorber (Part No.552001)

Magnum Light Truck Shock Absorber

from

$106.99
Magnum Light Truck Shock Absorber

KYB – High Pressure Monotube Gas Shock (Part No.565128)

High Pressure Monotube Gas Shock

from

$203.99
Tough conditions demand tough truck shocks. The large bore KYB MonoMax provides the additional stability that heavier, more powerful or high center of gravity vehicles demand. The KYB MonoMax is a heavy duty monotube shock absorber that provides the most handling, control and durability of any KYB shock; and its just for trucks. The MonoMaxs tough design automatically adjusts to driving conditions with fade-free performance. The KYB MonoMax has an outstanding reputation for vehicles that do real work, go off-road, tow a trailer or haul heavy loads. It uses a work-ready, zinc-coated steel piston ring and includes an off-road dust boot.

Product Features:
  • Maximum Performance Upgrade With Up To 40% More Damping Performance Than Standard Shock Absorbers
  • Perfect Solution When You Need To Upgrade Suspension Performance On Your Gm Truck
  • Truck Monotube Design Outperforms All Other Standard Shock Absorbers
  • Zinc-Coated, Stainless Steel Piston Ring Provides A Positive Seal In The Most Extreme Conditions
  • Rubber Boot To Protect The Shaft And Keep Dirt And Debris Away From The Seals
  • Engineered To Help Vehicles With Electronic Safety Systems (Esc, Abs, Etc.)
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KYB – High Pressure Monotube Gas Shock (Part No.555055)

High Pressure Monotube Gas Shock

from

$134.99
The Gas-a-just monotube shock absorber is available as an OE monotube replacement to restore your vehicles original capabilities. The KYB Gas-a-just has two separate working chambers: An air-free hydraulic piston and valve area for responsiveness and control, and a second high-pressure nitrogen gas area with a floating piston that provides a comfortable ride during normal driving and adds instant performance on demand.

Product Features:
  • The Correct, Monotube-Designed Orem Replacement
  • The KYB Gas-A-Just Helps Restore The Designed Control And Handling Of Full-Size Gm Trucks
  • Gas-A-Just Monotubes Are Designed For Vehicles That Work, Tow, And Have Larger, Heavier Tires & Wheels
  • High Pressure Monotube Design Separates The Gas And Oil For Fade Free Operation And Instant Response
  • Fluid Leaking Can Be A Cause Of Shock Failure, The KYB Gas-A-Just Has An Ultra-Smooth Triple Chrome Plated Chrome Piston Rod To Reduce Seal Wear
  • The Higher Gas Pressure Of The KYB Gas-A-Just Responds Quickly To Improve Steering Response
  • Electronic Safety Systems Depend On The Suspension, Brakes And Tires Operating As The Vehicle Manufacturer Intended. The KYB Gas-A-Just Helps Keep Electronic Safety Systems Performing As Designed.
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Rancho – Shock Absorber (Part No.RS77198)

Shock Absorber

from

$101.99
Application tuned for precision on-road and off-road handling, Rancho RS7MT monotube shocks are highly effective in the dissipation of heat, making them ideal for extreme off-road use and larger wheel and tire packages. RS7MT shocks feature an integrated

Product Features:
  • PRECISE HANDLING AND PERFORMANCE — Deflective Disc Valving features digressive, linear or progressive turning based on application requirements for precision handling and performance on and off road
  • STRONG AND DURABLE — Features a 14mm hardened chrome piston rod to resist scuffs & corrosion, double-welded loops at stress areas, double strength closure method and hot form reserve tube
  • HANDLES EXTREME TEMPERATURE CHANGES — Large 2-in. monotube body filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F
  • REDUCES FADE — Full-floating dividing piston and high-pressure nitrogen gas maintains constant pressure against the hydraulic oil, reducing aeration and shock fade
  • SMOOTH PERFORMANCE — Internal rebound bumper and shouldered rubber bushings help reduce noise, vibration and ride harshness while the PTFE-banded piston enhances responsiveness to changing road conditions for an overall smoother ride
  • THE RIGHT FIT — Designed to fit right out of the box, application-specific mounting installs easily with no need for installing sleeves or extra hardware
  • KEEPS DIRT AND DEBRIS OUT — Sealing system with integrated dirt wiper helps keep moisture, dirt and debris from being ingested into the shock and contaminating the oil and destroying the internal seal
  • BUILT TO LAST — Large 46mm fluon-banded piston for consistent sealing between the piston and monotube for precise control, ride and handling, for extra protection black shock boot RS1952 and RS1961 are available for purchase
  • BOLD APPEARANCE– Black satin finish with distinctive Rancho red logo for an eye-catching look that stands out
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FAQs for 2018 GMC Sierra 1500 Rear Shock and Struts

What are the most popular Rear Shock and Struts for the 2018 GMC Sierra 1500?

With 5 brands you can trust, our most popular Rear Shock and Struts for the 2018 GMC Sierra 1500 parts are:
Reflex Monotube Shock Absorber
from $89.99
(49)
Reflex Monotube Shock Absorber
Rear Shock and Struts
RS5000X Shock Absorber
from $85.99
(13)
RS5000X Shock Absorber
Rear Shock and Struts
RS5000X Shock Absorber
from $78.99
(2)
RS5000X Shock Absorber
Rear Shock and Struts

What are the best aftermarket Rear Shock and Struts for the 2018 GMC Sierra 1500?

See what past customers had to say about our highest-rated Rear Shock and Struts for the 2018 GMC Sierra 1500:
RS5000 Shock Absorber
from $68.99
(11)
RS5000 Shock Absorber
“I put the Rancho RS5000 Shock Absorber’s on the back of my 2015 z71 4×4 Silverado and they are Great. They are easy to install, and the ride is amazin”
RS9000XL Shock Absorber
from $161.99
(1)
RS9000XL Shock Absorber
“MAKE SURE YOU PUMP THE PISTON A FEW TIMES TO GET THE AIR OUT BEFORE INSTALLING. MAKES IT EASIER TO TELL WHAT THE SETTINGS ARE. ONCE AIR OUT FROM SHIPP”
Hydro Shock W/Red Boot
from $55.99
(1)
Hydro Shock W/Red Boot
“Missing tie for covers”