Z55 Rear Electronic to Shocks & Springs Conversion Kit - Escalade Avalanche Yukon Tahoe

Key Features:
  • Limited Lifetime Warranty
  • Saves You Money Compared To OEM/Dealer Prices
  • Installation Instructions Included
  • Brand NEW

Order Includes:
Order Includes: 2 Rear Shocks Assembled with Helper Springs, Bypass Resistors

Electronic to Passive Air Shock Conversion; Includes Resistors and Hardware; W/ ZW7 PREMIUM SMOOTH RIDE SUSPENSION; W/O Z55 ELECTRONIC SUSPENSION; W/O ZW7 PREMIUM SMOOTH RIDE SUSPENSION
Part Number 150G-30-R-RES
Condition New
Ships Within 1-2 Business Days
This item qualifies for FREE UPS Ground Shipping
Suncore’s Rear Air Spring to Coil Spring Conversion Kit Part 150G-30-R-RES for your Avalanche, Avalanche 1500, Avalanche 2500 or Escalade is the perfect upgrade for an aged and failing air suspension system.
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CARDONE New: 4J-0010K
Arnott Industries: C-2666
Westar: CK-7626
WARNING CA Proposition 65
Suncores 150G-30-R-RES Conversion Kit replaces your Z55 Rear Auto Ride Suspension with passive, heavy duty gas shock absorbers, and includes resistors to eliminate any warning lights on your dash. Our heavy duty shock absorbers come pre-configured, with the bushings and helper springs already installed, ready to be fitted on to your suspension. Suncores Suspension Conversion Kits always cost much less than the original component from the dealer, and are more reliable than the electronic suspension components, while keeping your vehicle at the factory ride height.


Suncore Industries was established in 2000 and have been a member of the Automotive Parts Rebuilders Association (APRA) ever since. Our mission began with rebuilding air suspension components and moved quickly into offering better solutions with conventional suspension conversion kits to give our customers the longevity they can rely on.

The most common reason for an air strut failure is due to dry rotting of the air bag. This is something that happens over time, the air bag starts to deteriorate and causes leaks, when this happens the air bag can no longer hold air pressure. A leaking air bag can cause the strut it fits over to fail as well. The second factor of an air strut failure is the strut itself. The strut is pressurized with fluid, and if the strut begins to fail it will no longer have the same pressure to hold the vehicle. If this system begins to fail one visible sign will be that your vehicle will be lower than factory height. If Air Struts are not replaced on time, it will cause an Air Suspension Compressor Failure.

We are happy to offer free UPS ground shipping on all orders to the lower 48 States.

Unfortunately since these parts are quite heavy and large we cannot offer free shipping to Puerto Rico, Hawaii nor Alaska. (We do offer shipping to these areas, but it will be based upon UPS quotations. Please feel free to contact us directly.)

We do not ship to P.O. Boxes nor APO's as UPS will not deliver to these locations.

If you would prefer a different or expedited shipping option, please contact us and we will be glad to work around your needs.

Business hours are Monday to Friday 9am to 5pm EST.

We ship UPS Ground by default
Same-day shipping will be provided for orders placed before 2PM EST
Orders after 2PM EST will be shipped the next business day
Orders on the weekend will be shipped the next business day
Orders on a holiday will be shipped the next business day
Tracking will be provided immediately to the email provided in your order
Signature required is mandatory on any order over $400
Signature required may be requested on orders below $400

Complete strut assembly free shipping ups ground
Please refer to this chart for estimated transit times. We are shipping out of the warehouse in Boynton Beach, Florida zip code 33426

4.6 out of 5 stars
5 total ratings
Verified Buyer
Very easy to install. I’ve been running them for a year and they’ve been great
Reviewed on 9/23/2020
Verified Buyer
Great selection and service. Very helpful on the phone to get the parts you need.
Reviewed on 9/23/2020
Verified Buyer
I installed these on a 2006 GMC Yukon XL. This truck is constantly loaded with tools and pulls a heavy trailer regularly. With the stock air shocks, the rubber frame bumpers were constantly resting directly on the axle, and it was very obvious how severely the rear end was sagging. After installing these shocks, the rear ride height increased about 3", and the truck now sits level with the weight in it. This also greatly improved ride quality and handling. The shocks themselves look to be very well made and I expect them to outlive the truck. I removed the fuse for the air compressor and height management system so I did not need to use the resistors that were included. Suncore has excellent customer service and I was very happy with the fast responses to my questions and how quickly these shocks were shipped.
Reviewed on 6/8/2020
Verified Buyer
Installed easily on my 2002 Escalade and these were a cheap fix vs the OEM adjustable shocks. Of course you lose the auto-adjust from the original shocks. Only issue I've had is that the springs on these sometimes make noise if they get dirty. The dirt causes the outside spring to rub against the inside cylinder as they compress, and then they "ring" sort of like the sound you'd get after you tapped them with a rubber mallet. Had to clean them off once already to keep this from happening...
Reviewed on 5/8/2019
Verified Buyer
I first purchased these heavy duty shocks for my 2003 Cadillac Escalade Ext to replace the troublesome air leveling system and couldn't have been happier. No more worries and the truck rode like a dream! Unfortunately my beloved truck was totaled when a young driver, who was texting, rammed into the left rear quarter at full speed while the truck was parked. I replaced it with a 2009 Cadillac Escalade Ext and within a month of ownership the rear shocks started leaking. I went to order these same conversion shocks to place the defective ones but the option was not available. So instead, being that my compressor was fine, I purchased PART #: 150G-14-R-RES which are the Standard Air Shock Absorbers with Auto Ride Bypass. Unfortunately I didn't like the ride as it felt "too floaty" to me in the rear. I called and spoke with Suncore manager Joe who was able to do a direct swap to replace the air shocks with these heavy duty shocks and my 2009 rides as good if not better than my trusty 2003!! Joe provided me a UPS shipping label for me to return the air shocks at no added cost to me!!! I cannot thank Suncore enough for their great products, professionalism and outstanding customer service!! I will ALWAY shop Suncore for any and all future suspension needs!
Reviewed on 7/2/2018
Showing comments 1-5 of 5

Z55 Rear Electronic to Shocks & Springs Conversion Kit - Escalade Avalanche Yukon Tahoe

I have a 2005 Yukon xl Denali. Is this the correct kit for my suspension. Thanks.

Customer Service

Thank you for taking interest, Yes this will replace the rear electronic shocks if your looking to convert or can be used as an upgrade for standard shocks.

will these fit 2004 Deville? Thanks

Customer Service

Hi Scott we are glad to help. These parts are not compatible with your vehicle, they are for an Escalade model, not a Deville. We are currently out of stock on the units you need; part # 408G-32-R. I signed you up for an email when the parts are back in stock. Please let me know if you need anything else. -Stephanie

I have a 2002 Cadillac Escalade. Is this the correct kit for my suspension. Thanks.

Customer Service

Ariel, Yes, this kit is compatible with your 02' Escalade. Keep in mind it is a conversion so you are getting out of electronics, instructions are included in the box. Please let us know if you need anything else, have a good day. -Stephanie

I have a 2011 yukon XL Denali whit a leveling kit of 1.5” on the rear. do u guys offer the same shock but maybe a bit longer to compensate for that 1.5 inches?

Customer Service

Hi Jovan, We do not have a conversion shock that is going to compensate for the 1.5 inch lift. Our parts will only fit factory settings and will bring your vehicle to factory height. We do apologize for the inconvenience, we hope you have a great day. -Stephanie

If I buy these shocks, do I need to replace the coil springs too?

Customer Service

Hi Alex, You do not need to replace the coils unless they are very compressed or rusted. These shocks have helper springs so it will assist your current coils. Please let us know if you need anything else.

I have an 07 suburban LTZ with Z55 suspension. Will these work on it?

Customer Service

Gary, Yes this conversion into passive gas shocks is compatible! We include bypass resistors with this kit and full instructions. Please let us know if you need additional help, we hope you have a great day. -Stephanie

Will this fit my 2007 Yukon xl and does it still allow for towing.

Customer Service

Yes they will fit, and while it is not typically recommended, yes they can be used to tow. I hope this helps! -Roy