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Cardboard box containing rear coil spring conversion kit for Cadillac and Chevrolet SUVs

Unity

Unity 30-515000-ESV Rear Coil Spring Conversion Kit

SKU CH-SWNJ-5JX7G

Converts factory air suspension to reliable steel coil springs for select Cadillac and Chevrolet models from 2000 to 2014

  • TypeInstallation Tools
  • Converts factory air suspension to reliable steel springs
  • Complete kit includes all parts and instructions for installation
  • New components eliminate need for specialty tools during repair
  • Resistors included to override dashboard warning messages
  • Fits 2003-2014 Cadillac Escalade ESV and EXT models

Rear Coil Spring Conversion Kit

This Unity kit replaces the factory air suspension on compatible Cadillac and Chevrolet models with a non-air steel spring setup. It is intended for owners who want to eliminate air-ride maintenance and warning lights. The package includes all required components, instructions and resistors to override the dashboard warning message. No specialty tools are needed for the installation.

Build Quality and Daily Implications

The kit arrives as a complete set of new parts designed for a trouble-free fit on 2003-2014 Cadillac Escalade ESV, 2003-2013 Cadillac Escalade EXT, 2007-2013 Chevrolet Avalanche and 2000-2014 Chevrolet Suburban 1500 models. Its all-in-one packaging means the repair can be finished without sourcing additional brackets or hardware. The included resistors prevent the vehicle computer from flagging a suspension fault after the conversion.

Upgrade Path and When It Makes Sense

This conversion replaces an aging air-spring system that may leak or require compressor service with a passive steel-spring arrangement. The jump is worth it when repeated air-suspension repairs become costly or when a simpler, more predictable ride is preferred. It is not suited for drivers who want to retain adjustable ride height or automatic load-leveling functions.

Highlights

  • Converts factory air suspension to reliable steel springs
  • Complete kit includes all parts and instructions for installation
  • New components eliminate need for specialty tools during repair
  • Resistors included to override dashboard warning messages
  • Fits 2003-2014 Cadillac Escalade ESV and EXT models

Specifications

TypeInstallation Tools

Questions about this item

Does this 30-515000-ESV kit work with the factory air-suspension wiring on a 2014 Cadillac Escalade ESV?

Yes, the kit includes resistors that plug into the original connectors to override the dashboard warning message after the air system is removed.

What are the box dimensions for the 22 x 14 x 13 inch kit to confirm it fits in my workshop?

The packaged kit measures 22 inches long, 14 inches wide and 13 inches high and weighs 50 lbs.

What is the correct order to install the rear coil springs and resistors on a 2007 Chevrolet Avalanche?

Remove the air springs first, fit the new steel coil springs and shocks, then install the supplied resistors into the factory harness before reconnecting the battery.

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