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Complete Guide to GM 84176675 Rear Air Shock Absorbers for Escalade, Yukon & Tahoe

If your 2015-2020 Escalade, Yukon, or Tahoe sags at the rear, clunks over bumps, or throws a "Service Suspension System" warning, the rear air shocks are the first suspects. On MagneRide-equipped trucks, the GM part number for that rear pair is 84176675.

This guide covers what the 84176675 does, exactly which vehicles it fits, the failure signs GM documents in Technical Service Bulletin 18-NA-315, and what replacement involves. If you already know you need the part, the Pair Rear Air Shock Absorbers for Escalade, GMC Yukon, and Chevrolet Tahoe is sold as a matched set for both rear wheels.

What the GM 84176675 Rear Air Shock Does

The 84176675 is an electronic air lift shock with load-leveling capability. It holds the rear of the SUV at the correct ride height whether the truck is empty or fully loaded. As weight changes, the air suspension adjusts automatically, so handling and stability stay consistent.

These shocks are built specifically for GM's MagneRide suspension, identified by RPO code Z95. MagneRide works through your vehicle's electronic controls, so the replacement unit has to integrate with that system — a generic passive shock will not.

Build quality follows original factory specifications, and the production line is IATF16949 certified, the quality standard for automotive manufacturing. Installation is direct bolt-on with no modifications required.

Vehicle Compatibility: 2015-2020 GM Full-Size SUVs

The 84176675 covers one generation of GM full-size SUVs, from the 2015 model year through 2020. All of the following fit, provided the truck has the MagneRide suspension (RPO Z95):

• Cadillac Escalade — 2015-2020
• Cadillac Escalade ESV — 2015-2020
• GMC Yukon — 2015-2020
• Chevrolet Tahoe — 2015-2020
• Chevrolet Suburban — 2015-2020

One part number, one suspension requirement, five models. That keeps ordering simple — as long as your SUV carries Z95, this is the right shock for the rear axle.

Technical Specifications

The quick facts, all in one place:

Failure Signs GM Documents in TSB 18-NA-315

GM Technical Service Bulletin 18-NA-315 covers the rear shock problems these SUVs are known for. If your truck shows any of the symptoms below, worn or leaking 84176675 shocks are the likely cause:

• Shock leaking — fluid around the shock body
• Clunking or rattling noises from the rear
• Creaking or popping noises
• Rough ride
• Uneven ride height — one corner sitting lower
• "Service Suspension System" warning on the Driver Information Center

A leaking air shock loses pressure, the rear end sags, and ride quality falls apart. Replacing both shocks at once restores equal damping side to side and addresses the root cause of the warning, not just the symptom.

Ride Quality After Replacement

New 84176675 shocks bring back strong body control and reduced rebound force at each wheel. In practice, that means the truck stays flatter over bumps, and the clunks, creaks, and rattles disappear from the rear axle.

Load-leveling is the other half of the job. Whether you are hauling cargo, towing, or driving empty, the air system keeps the rear at the correct height, so stability does not change with the load you carry.

Installation: What to Expect

Experienced DIYers do tackle this job at home, but professional installation is recommended. Here is what the process involves and why:

1. Electronic and air-line connections. The shocks connect to your SUV's suspension electronics and air lines — easy to get wrong without the right tools.
2. System bleeding. After installation, the air system needs proper bleeding to remove air pockets. Skipping this step causes uneven ride height.
3. Calibration. The system requires proper calibration once the new shocks are in, which is standard work for a shop.
4. Post-install check. If "Service Suspension System" still appears after installation, have the system professionally diagnosed.

If you have never worked on air suspension, budget for a shop visit instead. A pinched or loose air line puts you right back where you started.

Care After Installation

A little attention keeps the system healthy for the long run:

• Check every 6 months for leaks, unusual noises, and ride height consistency.
• Let the automatic load-leveling do its job, but never exceed your vehicle's maximum payload capacity.
• Do not ignore a returning "Service Suspension System" light — diagnose it early.

Why Buy This Pair

• GM-recommended replacement. Listed as GM's recommended replacement part for original equipment.
• OEM-spec fitment. Manufactured to exact factory specifications for seamless installation.
• Certified quality. IATF16949 certification, with rigorous testing for durability and performance under varying load conditions.
• Complete pair. Both rear shocks in one order, so damping is balanced from day one.

Need other suspension parts for the same job — bushings, links, front struts? Browse the full steering & suspension catalog on koeep.com to match everything in a single order.

Working on a different vehicle? Our guide to a complete suspension replacement kit for the 2003-2006 Kia Sorento covers front struts and rear shocks on a conventional setup.

Questions? Get Fitment Help Before You Order

Not sure whether your SUV carries RPO code Z95? Send us your vehicle details and we will check fitment before you spend anything. The fastest route is the Request for Quote page — include your year, make, and model, and we will reply with the right part, availability, and pricing for multi-part orders.

Direct Contact Channels

• WhatsApp — quick answers about the 84176675 pair, shipping times, or installation questions
• support@koeep.com — email for fitment checks and order queries

Whichever channel you use, include your VIN or the RPO codes from the driver-side door jamb. That lets us match the right shock the first time.

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