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How to Install a Suspension Conversion Kit on 2014-2018 Chevrolet Silverado 1500/GMC Sierra 1500 Trucks

Monroe® Suspension Conversion Kit – a Cost-Effective Alternative

For General Motors 1500 series trucks equipped with a magnetic ride control suspension system, replacing the electronic suspension system can be a costly repair. A Monroe suspension conversion kit converts the factory electronic suspension system to a conventional suspension. Once you have installed a Monroe suspension conversion kit on your Chevy Silverado 1500 or GMC Sierra 1500, it restores factory ride height so your truck will ride and handle the same way that a vehicle with a conventional suspension system performs.

Designed for 2014-2018 Chevrolet Silverado 1500 High Country and GMC Sierra 1500 trucks, a suspension conversion kit is a cost-effective alternative to replacing the OE magnetic ride control suspension system. Featuring premium replacement components, Monroe suspension conversion kits come with everything needed for a complete bolt-on repair.

For a complete, four-corner repair, be sure to purchase these three Monroe part numbers: 90033C1 (front right strut assembly), 90033C2 (front left strut assembly) and 90033C3 (two rear shocks). This kit replaces the front magnetic ride control struts and rear magnetic ride control shocks with front passive strut assemblies and rear conventional shock absorbers.

The kit contains:

  • Two front strut assemblies
  • Two rear shock absorbers
  • Four shock actuator simulators
  • Zip ties
  • Instruction sheet

Check out the steps for installing a Monroe suspension conversion kit on a Chevrolet Silverado or a GMC Sierra.

How to Convert a Magnetic Ride Control Suspension to a Conventional Suspension on Chevrolet Silverado & GMC Sierra Trucks

Before You Start:

  • Monroe part numbers required for a complete repair: 90033C1, 90033C2 and 90033C3 (each part number sold separately).
  • Read these instructions and any instructions printed on the parts package carefully PRIOR to removing the components from the vehicle.
  • Part number on shock or spring may differ from part number on the carton. The contents are correct for the vehicle.
  • For questions or concerns, contact Gurus-On-Call at 1-800-325-8886.

 

WARNING – Safety Steps:

  • If the shocks supplied are nitrogen gas pressurized, do not heat or open.
  • Always wear safety glasses for eye protection.
  • Use safety stands whenever a procedure requires you to be under a vehicle.
  • Before servicing any electrical component, ensure that the ignition is off, the key is out of the ignition and the negative lead is disconnected from the battery. Refer to the owner’s manual for the correct procedure.
 

1. Raise the vehicle by the frame at proper lift points and make sure the vehicle is properly supported. Refer to the owner’s manual for the correct lifting procedure.

2. Remove the wheel.

3. Remove the wheel housing splash shield.

4. Support the front lower control arm.

5. Disconnect the electrical connector from the strut assembly.

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6. Remove the lower strut assembly mounting bolts.

7. Remove the three upper strut assembly mounting bolts.

8. Carefully remove the strut assembly from the vehicle. Note: Retain strut assembly. Electrical connector will be needed for a later step.

9. Install the new strut assembly.

10. Install the three upper strut assembly mounting nuts. Hand tighten only.

11. Install the lower strut assembly mounting nuts. Hand tighten only.

12. Repeat the steps on the other side of the vehicle.

 

1. Support the rear axle assembly with the proper jack stand. Refer to owner’s manual for proper lifting procedure.

2. Disconnect the electronic suspension control connector.

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3. Remove the lower shock bolt and nut. Save hardware for reuse.

4. Remove the upper shock absorber bolt and nut. Save hardware for reuse.

5. Remove the shock absorber from vehicle. Note: Retain shock absorber. Electrical connector will be needed for a later step.

6. Repeat the steps on the other side of the vehicle.

 

1. Position the shock and install the upper shock bolt and nut. Hand tighten only.

2. Repeat on other side of the vehicle.

3. Raise the rear axle so that the lower shock bolts and nuts can be installed.

4. Install lower shock bolts and nuts on both shocks. Hand tighten only.

5. Carefully remove the jack stand supporting the rear axle.

 

1. Cut the front strut electrical plug wires on both OE strut assemblies that were previously removed from the vehicle. Cut as shown in the photo below. Retain plugs and properly dispose of the struts.

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2. Cut rear air shock electrical plug wires on both OE shocks that were previously removed from the vehicle. Cut as shown in the photo below. Retain plugs and properly dispose of the air shocks.

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3. Strip the wires that were cut from the struts/shocks back approximately 3/16". This will expose two wires.

4. Using the butt connectors provided in the kit, install and crimp one of the wires from the vehicle plug and one of the wires from the provided shock simulator. Repeat for other wire on the vehicle plug and shock simulator. Each wire should now be separated to not allow cross connection. Note: Electrical plug in the photo may not be the same; photo is for representation only.

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5. Using zip ties provided in the kit, secure the shock simulator to the vehicle.

6. Repeat steps 3-5 for the other three corners of the vehicle.

 

1.       Reinstall wheels and hand tighten the lug nuts. Safely lower the vehicle to the ground and torque the lug nuts to 140 lb-ft (190 N·m).

2.       Torque three upper front strut assembly mounting nuts to 37 lb-ft (50 N·m). Do this for both front strut assemblies.

3.       Torque both lower strut assembly mounting bolts to 37 lb-ft (50 N·m).

4.       Torque both upper shock absorber bolts and nuts to 85 lb-ft (115 N·m).

5.       Torque both lower shock absorber bolts and nuts to 85 lb-ft (115 N·m).

6.       Reinstall wheel housing splash shields.

NOTE: If a Service Suspension message appears on the instrument cluster when starting the vehicle, a scan tool will be needed to clear the message. Once cleared, the service message shouldn’t reappear.

 

The content contained in this article is for informational purposes only and should not be used in lieu of seeking professional advice from a certified technician or mechanic. We encourage you to consult with a certified technician or mechanic if you have specific questions or concerns relating to any of the topics covered herein. Under no circumstances will we be liable for any loss or damage caused by your reliance on any content.


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