2003 GMC Sierra 1500 Air Suspension and Kits

Timbren suspension enhancement system – The decision is easy, Timbren suspension kits (SES kits) are designed to enhance the suspension of your vehicle. Improve load handling haul heavy loads with ease eliminate sag and sway.

Product Features:

• Eliminate Suspension Sag: When Towing A Heavy Trailer, Timbren SES Extends The Life Of The Suspension Of Your Vehicle And Helps To Avoid Bottoming Out
• Control Trailer Sway, A Condition Which Occurs With Unbalanced Loads, In Crosswinds Or When Passing Heavy Trucks Timbren SES Stabilizes Your Vehicle
• Control Body Roll, During Cornering With Powerful Progressive Rate Rubber Springs Which Resist Lean And Enhance Vehicle Stability
• Improve The Ride, By Allowing The Aeon(R) Rubber Springs Absorb Road Shocks And Bumps. Towing A Trailer Doesnt Have To Mean Poor Ride Quality
• Economical And Trouble Free
• Simple And Easy To Install

Timbren suspension enhancement system – The decision is easy, Timbren suspension kits (SES kits) are designed to enhance the suspension of your vehicle. Improve load handling haul heavy loads with ease eliminate sag and sway.

Product Features:

• Eliminate Suspension Sag: When Towing A Heavy Trailer, Timbren SES Extends The Life Of The Suspension Of Your Vehicle And Helps To Avoid Bottoming Out
• Control Trailer Sway, A Condition Which Occurs With Unbalanced Loads, In Crosswinds Or When Passing Heavy Trucks Timbren SES Stabilizes Your Vehicle
• Control Body Roll, During Cornering With Powerful Progressive Rate Rubber Springs Which Resist Lean And Enhance Vehicle Stability
• Improve The Ride, By Allowing The Aeon(R) Rubber Springs Absorb Road Shocks And Bumps. Towing A Trailer Doesnt Have To Mean Poor Ride Quality
• Economical And Trouble Free
• Simple And Easy To Install

High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:

• High-quality products that meet OE appearance and performance to

Product Features:

• Premium components and our own manufactured circuit board ensure precise operation, reliability, and extra durability for a longer service life
• Our electronic voltage regulator PC boards are encapsulated in epoxy to deliver improved performance and resistance to failure that may be caused by vibration and corrosion of electrical connections
• All parts are manufactured to stringent quality requirements. Our plants are TS16949 and ISO9001 certified which ensures that every part is the right part for the right vehicle.

Ideal for hauling, Monroe® Max-Air® shock absorbers can be inflated or deflated up to 150 PSI to maintain level height with additional weight up to 1,200 lbs. (capacity is limited by vehicle suspension, tires and transmission. See vehicle owner’s manual.)

Product Features:

• MAINTAIN RIDE HEIGHT UNDER LOAD — Air chamber can be inflated or deflated up to 150 PSI to maintain level height with additional weight up to 1,200 lbs. (capacity is limited by suspension, tires and transmission, see owner’s manual)
• EASY TO ADJUST — Special air fitting resists air leakage and ties into factory system (where applicable) or manually inflates with an air compressor, pair with Monroe air shock accessory and shock air hose AK kits (varies by application)
• EXCEPTIONAL HANDLING — Full-displaced valving on compression and extension cycles for a smooth ride
• BUILT TO LAST — Hardened and precision ground piston rod for consistent performance, sintered iron piston for enhanced durability and longer service life and lubricated air sleeve reduces friction for smooth operation
• CONSISTENT RIDE — OE all-weather fluid contains special modifiers to handle extreme temperatures and help reduce friction and ensure smooth rod reaction
• Sintered Iron Piston: Stronger than traditional metals, enhances durability for longer service life.
• Special Air Fitting: Resists air leakage.

Ideal for hauling, Monroe® Max-Air® shock absorbers can be inflated or deflated up to 150 PSI to maintain level height with additional weight up to 1,200 lbs. (capacity is limited by vehicle suspension, tires and transmission. See vehicle owner’s manual.)

Product Features:

• MAINTAIN RIDE HEIGHT UNDER LOAD — Air chamber can be inflated or deflated up to 150 PSI to maintain level height with additional weight up to 1,200 lbs. (capacity is limited by suspension, tires and transmission, see owner’s manual)
• EASY TO ADJUST — Special air fitting resists air leakage and ties into factory system (where applicable) or manually inflates with an air compressor, pair with Monroe air shock accessory and shock air hose AK kits (varies by application)
• EXCEPTIONAL HANDLING — Full-displaced valving on compression and extension cycles for a smooth ride
• BUILT TO LAST — Hardened and precision ground piston rod for consistent performance, sintered iron piston for enhanced durability and longer service life and lubricated air sleeve reduces friction for smooth operation
• CONSISTENT RIDE — OE all-weather fluid contains special modifiers to handle extreme temperatures and help reduce friction and ensure smooth rod reaction
• Sintered Iron Piston: Stronger than traditional metals, enhances durability for longer service life.
• Special Air Fitting: Resists air leakage.

CARQUEST PREMIUM Chassis parts are engineered and benchmarked to Original Equipment (OE) performance standards. CARQUEST PREMIUM Chassis provides the installation benefits of the aftermarket while providing high-quality, proven reliability.  CARQUEST PREMIUM Chassis has been rigorously quality-tested, meeting or exceeding OE specifications.  CARQUEST PREMIUM Chassis parts have been designed to provide a stable and safe ride to meet customer expectations and  perform the way professional technicians demand.

Product Features:

• OE matched design for Form, Fit, and Function
• Engineered to reduce road noise and provide a stable ride.
• Hardware included for easier installation (where applicable)

KYB Strut Mounts eliminate the vibration and noise caused by old, hardened vibration insulators. They optimize suspension performance by offering OE quality replacement components designed for each application. KYB Strut Mounts cushion the impacts from road bumps to reduce the jarring effect, noise and vibration that old mounts transmit into the vehicle. Front bearing plates are the steering pivots and support vehicle weight. They are critical to steering performance and wheel alignment. KYB Strut Mounts and bearing plates have a reputation for providing the highest quality in the industry.

Product Features:

• The highest quality replacement strut mount available
• Optimizes suspension performance by offering Original Equipment quality replacement components designed for each application
• Superior rubber reduces noise, vibration and harshness
• Mount bearings provide smoother steering and help retain front end alignment
• Matched grade studs and nuts

The Air Command Standard Duty Dual Electric Air Compressor System Kit Allows You To Adjust Your Air Springs With The Touch Of A Button. It Offers A Built in Air Source For Your Suspension System, Making It Easy To Alter Your Springs To Align With The Load Type And Environment. When Shopping For Air Accessories, You will Find That Firestone Air Command Standard Duty Dual Electric Air Compressor System Kit Is Designed To Have A Couple Of Special Benefits. First, The Air Command Standard Duty Dual Electric Air Compressor System Kit Comes Ready To Install, So You Can Set It Up And Get Back To The Road where You Want To Be. Just Connect A Few Wires To The Compressor And A Few To Your Vehicle. The Air Lines And Wiring Harness Can Be Plugged Into The Same Side Of The Unit For Smoother Routing Of Lines And Power Supply. After The Air Command Standard Duty Dual Electric Air Compressor System Kit Is Properly Installed, You Can Make Pressure Adjustments By Pressing A Single Button. This Air Command Standard Duty Dual Electric Air Compressor System Kit Component Allows For Side To Side Or Front to rear Leveling, Real time Pressure Readout, And Dual Left And Right PSI And Pressure Control Readouts. The Air Command Standard Duty Dual Electric Air Compressor System Kit Easy to read Needle Gauge Can Be Viewed Day Or Night, Without Straining Or Squinting Your Eyes. Prior To Installing The Air Command Standard Duty Dual Electric Air Compressor System Kit, Review The Instructions And Identify All Of The Components To Help Make Sure You Get Maximum Performance From Both Your Air Springs And Air Command Standard Duty Dual Electric Air Compressor System Kit. The Installation Steps Are Different Depending On Whether You are Enhancing An Existing Air Helper Spring System With The Air Command Standard Duty Dual Electric Air Compressor System Kit Or Installing It With A New Air Spring System.

Product Features:

• Individual Air Accessory Components Are Also Available, Including Compressors, Air Tanks, And Mounting Solutions, Providing A Wide Variety Of Air Control Assist Solutions
• Adjust The Ride For Various Load And Road Conditions With A Switch, Remote Or Mobile App
• Provides An Instant Air Source For The Air Helper Springs Or Accessories
• Dual Point Fill (Both Air Springs Fill Independently Of Each Other)
• Light Duty Compressor Specs (120 PSI Max Air Pressure, 9 Percent Duty Cycle, 0.32 CFM)

Monroe® is one of the automotive industry’s best-known and most trusted original equipment and aftermarket brands, having delivered innovative undercar solutions to leading global OE manufacturers and generations of professional technicians and vehicle owners. This heritage of leading-edge products and exceptional customer support has made Monroe® shocks, struts and other ride control components a preferred choice of automotive professionals worldwide.

Monroe® is one of the automotive industry’s best-known and most trusted original equipment and aftermarket brands, having delivered innovative undercar solutions to leading global OE manufacturers and generations of professional technicians and vehicle owners. This heritage of leading-edge products and exceptional customer support has made Monroe® shocks, struts and other ride control components a preferred choice of automotive professionals worldwide.

Air springs can offer improved load handling when working in combination with an original equipment suspension. This suspension air helper spring kit includes the equipment needed to add air springs on specified vehicles.

Product Features:

• Ideal solution – this air suspension upfit kit can compensate for rear suspension sagging or squatting under load or when towing by providing added support to maintain vehicle height and handling
• Effective retrofit – designed for cost-effective installation, easy air spring inflation, and durability that can help protect the vehicle from damage to the vehicle frame and suspension components
• Complete kit – includes 2 air springs, 2 braided stainless steel air lines, valves, mounting brackets, and all hardware needed for installation, with no drilling, welding, or special tools required
• Exclusive design – the air springs in this kit feature a patent-pending fail-safe design that includes a stout internal coil spring

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

• Protective outer coverings help provide long-lasting durability
• Color-coded wires allow for easy installation
• GM-recommended replacement part for your GM vehicle’s original factory component
• Offering the quality, reliability, and durability of GM OE
• Manufactured to GM OE specification for fit, form, and function

ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

• Protective outer coverings help provide long-lasting durability
• Color-coded wires allow for easy installation
• GM-recommended replacement part for your GM vehicle’s original factory component
• Offering the quality, reliability, and durability of GM OE
• Manufactured to GM OE specification for fit, form, and function

Count on Firestone Ride Rite for innovation and quality. Proper ground clearance, steering control, braking and avoiding premature tire wear are benefits of air springs.

Product Features:

• Clears All Common In-Bed Hitches
• Better Clearance For Over-Sized Tires
• Protects And Stabilize Loads And Provides More Comfortable Ride
• More Level Loads: Less Bottoming Out
• 5,000 Pounds Leveling Capacity
• Inboard Mounted
• Typical Installation Is 90 Minutes
• No Drill Install, Utilizes Existing Frame Holes

TrailFX has produced a line of leveling and rear block kits that are engineered to provide consumers with the very best in quality performance at an attractive price point. TrailFX suspension products allow you to level your vehicle or raise it for additional tire clearance, all while maintaining your factory ride.

Product Features:

• Gain Tire And Ground Clearance
• Easily Removed For Leased Vehicles
• Guaranteed For The Life Of Your Vehicle
• The Fastest, Least Expensive Way To Level Or Lift Your Truck
• The Strongest And Safest Forged Torsion Key Leveling System On The Market Today
• Stock Ride Quality Retained When Properly Installed

Give your Chevy® Silverado or GMC® Sierra 1500 an aggressive stance with the Rancho® 3-in. suspension system. It features upper control arms with preinstalled ball joints and Rancho RS9000®XL shocks and struts that allow customized damping control.

Product Features:

• ORDERING INFO — Box 3 of 3 for master kit RS66311R9, must order RS66311R9-1, RS66311R9-2 and RS66311R9-3 for a complete kit
• COMPATIBILITY — Designed for Chevrolet Silverado 1500 (excludes Trail Boss) and GMC Sierra 1500 trucks (excludes AT4)
• LIFTS AND LEVELS VEHICLE — Fits up to 33-in. tires, system lifts front by 3-in. while rear blocks raise the back an additional 1.5-in. to level the truck (trimming required for 33-in. tires, bumpers, winches, etc. affect height)
• COMPLETE SOLUTION — Includes Rancho RS9000®XL struts and rear shocks, upper control arms with ball joints, rear block kit, sway bar spacers and mounting hardware
• NINE LEVELS OF ADJUSTMENT — Rancho RS9000®XL shocks and struts feature nine-position knob for customized damping control and firmness for on-road and off-road flexibility
• BUILT TO PERFORM — Control arms keep the preinstalled ball joints in their normal operating range, provide additional caster to aid in alignment and add wheel travel
• ENGINEERED TO LAST — Brackets fabricated from high-strength, low-alloy steel for long life while control arms feature durable OE-style rubber bushings and ball joints for easy maintenance and quiet operation
• EASY TO INSTALL — Bolt-on installation for an easy upgrade
• NOTES — Maintains OE alignment specs and won’t affect electronic stability system, allows the use of OE wheels/tires, must use OE springs and top mounting components (tire size varies between manufacturers)

Daystar Leveling Kits work within the factory suspension design, meaning that we work within the factory design parameters to achieve an increase in ride height that levels the stance of the vehicle. Because we work within the factory design, there are not a bunch additional modifications involved. Everything needed is included in the kit, there is everything you need and nothing you do not. If there are extra items required, such as longer shocks, it is clearly stated in the application description. Torsion bar applications require their own unique approach to leveling the stance of the vehicle. With torsion bar applications, we supply new forged torsion keys that meet or exceed factory specifications. These torsion keys have been re-indexed to increase ride height up to 2 inch and level the stance of the vehicle. In select applications, extended shock brackets are also included. Daystar Leveling Kits include only front lift components to level the stance of the vehicle. We also offer Budget Boost kits, which provide a mild increase in ride height and are more economically priced than our Leveling Kits. Since our start with Leveling Kits in 1995 we have used our expertise to develop over 300 applications that span all of the popular trucks and SUVs…do your homework and you’ll see that we have done ours

Product Features:

• No Metal-On-Metal Contact, Daystar Uses Polyurethane Material In Its Leveling Kits For A Reason, It is An Insulator, Absorbs The Noise, Vibration And Harmonics (NVH) That Come From The Suspension
• Maintains Factory Ride Quality, Daystar Products Work With The Factory Springs With No Preloading Involved, So Vehicle Will Ride Just Like It Did Off The Showroom Floor
• Long Lasting Finish, Polyurethane Is Resistant To The Elements, Road Grime And All Automotive Chemicals, So Comfort Ride Kits Will Look Just Like They Came Out Of The Box For Years To Come
• Top Mount Easy Install Design

Daystar Comfort Ride Leveling Kits are designed to level the front of your vehicle to the rear. These durable polyurethane spacers raise the front of the truck two and a half Inches while maintaining the stock factory ride quality. All Daystar Comfort Ride Lift and Leveling Kits are backed with a lifetime, no questions asked, Go EVERYWHERE Warranty.

Product Features:

• Levels The Stance Of Your Vehicle
• Engineered For Milestar Patagonia A/T 31 Inch Tires
• No Metal-On-Metal Contact, Corrosion, Or Squeaks
• Maintains Factory Ride Quality
• Made In The USA

Looking to add larger tires or add that go anywhere capability and feel? Then look no further than a TrailFX mid lift suspension kit. Increased ground clearance, visibility, and a smoother ride are all benefits of a mid lift suspension kit. Kits contain all required, ready to install components in one box under one part number.

Product Features:

• Designed For Additional Clearance For Larger Wheel And Tire Combinations
• All Necessary Components Included In One Box
• Maintains Factory Ride
• Shock Replacement Not Required
• X Guard Plus Powertrain Warranty
• Limited Lifetime Warranty and Limited 1 Year Warranty On Wearable Components

Designed to provide inflation control of your air helper springs. This kit will be an asset to your vehicle, meeting nearly all of your air supply needs.

Product Features:

• Individual Air Accessory Components Are Also Available, Including Compressors, Air Tanks, And Mounting Solutions, Providing A Wide Variety Of Air Control Assist Solutions
• Adjust The Ride For Various Load And Road Conditions With A Switch, Remote Or Mobile App
• Provides An Instant Air Source For The Air Helper Springs Or Accessories
• Dual Point Fill (Both Air Springs Fill Independently Of Each Other)

Our Air Command systems give customers the ability to conveniently adjust their air springs with the touch of a button thanks to our Air Command Air Compressor Kits. Our designs provide an instant air source to a vehicle air suspension system, giving users the freedom to adjust their air springs to accommodate different loads and road conditions from both inside and outside of the vehicle.

Product Features:

• The Easy To Read Digital Display Is Designed So You Can See It During The Day, But It Does Not Blind You At Night
• The Wireless Remote Utilizes A New Sleep Cycle And LED Display That Reduces Energy Use And Improves Battery Life
• Easy Installation

Designed to provide inflation control of your air helper springs. This kit will be an asset to your vehicle, meeting nearly all of your air supply needs.

Product Features:

• Individual Air Accessory Components Are Also Available, Including Compressors, Air Tanks, And Mounting Solutions, Providing A Wide Variety Of Air Control Assist Solutions
• Provides An Instant Air Source For The Air Helper Springs Or Accessories
• Single Point Fill (Both Air Springs Fill To The Same Pressure)
• Light Duty Compressor Specs (120 Pounds Per Square Inch Max Air Pressure, 9 Percent Duty Cycle, 0.32 CFM)

Designed to provide inflation control of your air helper springs. This kit will be an asset to your vehicle, meeting nearly all of your air supply needs.

Product Features:

• Individual Air Accessory Components Are Also Available, Including Compressors, Air Tanks, And Mounting Solutions, Providing A Wide Variety Of Air Control Assist Solutions
• Provides An Instant Air Source For The Air Helper Springs Or Accessories
• Dual Point Fill (Both Air Springs Fill Independently Of Each Other)

Designed to provide inflation control of your air helper springs. This kit will be an asset to your vehicle, meeting nearly all of your air supply needs.

Product Features:

• Designed To Provide Inflation Control Of Your Air Helper Springs
• Provides An Instant Air Source For The Air Helper Springs Or Accessories
• Dual Point Fill (Both Air Springs Fill Independently Of Each Other)
• Light Duty Compressor Specs (120 Pounds Per Square Inch Max Air Pressure, 9 Percent Duty Cycle, 0.32 CFM)

While your car, truck, or SUV depends on Firestone Ride-Rite (TM) air springs to deliver in-cabin comfort, confidence, and control, you turn to Firestone Air Command (TM) products to take your experience to the next level. You count on air accessories like the Air Command Heavy-Duty Air Compressor System with Single Analog Gauge. The Air Command Heavy-Duty Air Compressor System with Single Analog Gauge makes inflating or deflating your air springs easy with the touch of a button. It provides an on-the-spot air source to your vehicle suspension system, letting you modify your springs to match the load and driving conditions. Firestone Air Command Heavy-Duty Air Compressor System with Single Analog Gauge, in particular, features a handful of distinct advantages. The Air Command Heavy-Duty Air Compressor System with Single Analog Gauge’s easy installation is chief among them, so you can get it hooked up and hop on the road in no time. Connect one wire to the compressor and three to the vehicle. The wiring harness and air lines can be plugged into the same side of the unit for uncluttered routing of power supply and lines.

Product Features:

• Designed To Provide Inflation Control Of Your Air Helper Springs
• Provides An Instant Air Source For The Air Helper Springs Or Accessories
• Single Point Fill (Both Air Springs Fill To The Same Pressure)
• Heavy-Duty Compressor Specs (150 Pounds Per Square Inch Max Air Pressure, 30 Percent Duty Cycle, 0.40 CFM)

While your vehicle trusts Firestone Ride-Rite (TM) air helper springs to deliver on-the-road control, confidence, and comfort, you trust Firestone Air Command (TM) products to take your experience to the next level. You look to air accessories like the Xtreme Air Cmd-S Compressor System. With the Xtreme Air Cmd-S Compressor System, you can easily modify your air spring inflation by pressing a button. It equips your vehicle suspension system with an instant air source, making it easy to modify your springs to fit the road conditions and load type. You’ll find that the Firestone Xtreme Air Cmd-S Compressor System features some very user-friendly advantages. Unpackage the Xtreme Air Cmd-S Compressor System and enjoy an easy installation, so you can get it set up and be back on the move. Connect one wire to the compressor and three to the vehicle. The wiring harness and air lines can be plugged into the same side of the unit for cleaner routing of power supply and lines.

Product Features:

• Controls Two Air Springs Simultaneously
• Adjust The Ride For Various Load And Road Conditions With A Switch, Remote Or Mobile App
• Provides An Instant Air Source For The Air Helper Springs Or Accessories
• Single Point Fill (Both Air Springs Fill To The Same Pressure)
• Extreme Duty Compressor Specs (150 Pounds Per Square Inch Max Air Pressure, 100 Percent Duty Cycle, 0.94 CFM)