Arnott AS-3429 Air Shock Absorber - Rear

Rear Air Shock for GM Trucks and SUVs

Arnott AS-3429 is a rear air shock absorber for 2015-2020 GM trucks and SUVs with the K2XX chassis and MagneRide. It replaces a failing rear air-assisted shock with a passive, custom-tuned damper that restores controlled ride behavior and helps eliminate dash panel error messages.

Compatible with Cadillac Escalade, Cadillac Escalade ESV, Chevrolet Tahoe, GMC Yukon, and GMC Yukon XL rear applications, this Arnott New line shock is engineered in the USA for direct-fit service on the rear suspension.

Key Features

• Rear air shock absorber for MagneRide-equipped GM applications
• Passive replacement that bypasses the vehicle’s auto-damping system
• Custom-tuned twin-tube construction for control, stability, and comfort
• Integrated sensor helps prevent dash panel error messages
• Air-adjustable design with rubber air bladder
• Progressive spring rate with spring-assisted operation
• Lower loop/eyelet mount and upper stud mount
• Standard-grade hydraulic internal damper

Product Details

Arnott AS-3429 is built as a rear shock absorber for GM K2XX chassis vehicles equipped with MagneRide. The twin-tube design uses a passive damper tuned to deliver predictable rear suspension response while maintaining the air ride function. This setup is intended for drivers replacing a worn or leaking rear air shock on 2015-2020 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, GMC Yukon, and GMC Yukon XL models.

This part cross-references General Motors 23151122 and 23267007 for the same application. The AS-3429 part number is also useful when searching for a rear air shock replacement for GM trucks and SUVs with MagneRide.

What It Helps Fix

• Rear suspension sag from a failing air shock
• Uneven ride height at the rear of the vehicle
• Excessive bounce or reduced damping control
• Dash panel suspension error messages related to the rear shock
• Loss of ride comfort on MagneRide-equipped GM SUVs and trucks

Installation Notes

• Fits 2015-2020 Cadillac Escalade, Rear, Passive Replacement; New
• Fits 2015-2020 Cadillac Escalade ESV, Rear, Passive Replacement; New
• Fits 2015-2020 Chevrolet Tahoe, Rear, Passive Replacement; New
• Fits 2015-2020 GMC Yukon, Rear, Passive Replacement; New
• Fits 2015-2020 GMC Yukon XL, Rear, Passive Replacement; New
• Verify MagneRide-equipped rear suspension and K2XX chassis application before ordering
• Mounting hardware is not listed as included
• Professional installation and post-installation ride-height inspection are recommended

Quality Assurance

Arnott’s New line focuses on aftermarket replacement parts engineered for specific vehicle applications. AS-3429 is designed as a direct rear shock replacement for the listed GM fitments and incorporates a sensor to help avoid suspension warning messages after installation.