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4×4 GM Vans

Product Overview

Converting your GM

Quigley Motor Company maintains a close relationship with GM due to the high quality, durable manufacturing and design of the Quigley products. This provides access to GM Ship-thru for reduced shipping costs to dealers in all 50 states and ensures you retain your factory warranty on the unaltered portion of your vehicle (engine, transmission, rear end, etc).

The proven, durable Quigley 4×4 IFS system provides improved road manners with better ride and handling characteristics, especially for on-road conditions. Maintaining the same ride height gives easy driver access and provides the ability to park in standard garages.

Quigley also offers a 3″ LIFS option for customers in need of additional ground clearance. The LIFS system will increase center of gravity and thus the vehicle should be driven accordingly. Please read warranty packet for more information concerning higher center of gravity vehicles. Quigley 4×4 conversion is available on the Passenger and Cargo Van and Cutaway (CAW).


Convert Your Used GM

In response to customer demand, Quigley will convert any 2014 or newer GM van with 60,000 miles or less to a Quigley 4×4. All vehicles must meet the Quigley pre-owned inspection before the Quigley 4×4 system is installed. Any existing components found in need of replacement during this pre-production inspection will be at an additional cost to the consumer.

The Quigley 4×4 conversion will use only new components that align with the vehicle model year. The Quigley Used / Pre-Owned conversion is sold at MSRP and will carry up to a 24 month / 24,000 mile warranty. See Pricing Guide below for a full description of costs and warranty details.

Need More Details on GM’s specifications?

Check out our technical center below for all of the nitty gritty details that you need, from weight charts to turning diameter.  

GM Component List

Quigley 4×4 System

  • PTorsion Bar IFS (4100/4600 lbs)
  • PManual shifter
  • P4x4 Indicator light
  • PNo increase in ride height
  • PLower center of gravity

K-Series Components Utilized

  • PFront axle with disconnect
  • PGM #261 transfer case
  • P2 speed (4Hi, 4Low)
  • PLower Control Arm

GM Retained Components

  • POEM brake system, wheels & tires
  • POEM steering system
  • PTraction control
  • PFour Wheel Anti-Lock Brake (ABS)
  • PTire Pressure Monitoring (TPS)
  • PStabiliTrak Electronic Stability Control System (ESC)

Pricing Guide

It is recommended you speak with a Sales rep who will assist you in determining the right solution to fit your needs. For a comprehensive price, please Request a Quote or see the pricing guide for full details.

GM Warranty Program

The Quigley 4×4 system is backed by a warranty matching GM’s vehicle warranty including both labor and replacement parts. Designed to be easily serviced by GM dealers across the country, the genius behind Quigley is its use of easily obtainable, original equipment suspension and drive train components from major automotive manufacturers.

Extended Warranty: When purchasing extended warranties either from the vehicle manufacturer or an aftermarket company, verify in writing the extended warranty is valid for vehicles converted to the Quigley 4×4 system. The vehicle manufacturer’s extended warranty covers only the factory installed components. Quigley Motors does not offer, nor does it honor, any form of extended warranties.

Warranty Packet Includes

  • Warranty restrictions and warnings
  • Detailed warranty coverage
  • Operating instructions
  • Maintenance schedule
  • Registration form

Warranty Process

Authorization MUST be obtained from Quigley BEFORE repairs are made. Failure to obtain prior authorization will result in denial of reimbursement for the warranty claim.


If my local dealer does not work with Quigley, what should I do?
If you experience any difficulty in locating a dealership ready to provide you with a Quigley 4×4 drive, please call our sales department at 1-800-233-9358. We keep a record of recommended dealerships, and there is probably one in your area.
Does the 4x4 conversion void the factory warranty?
The factory warranty is retained on all unaltered portions of the vehicle.
How long will it take for delivery of my vehicle?
After placing an order with Quigley via a purchase Order or Signed Quote, your vehicle will be added to our tentative production schedule. Quigley does not have control over when the vehicle will arrive at Quigley. Upon unit arrival, the production schedule will be confirmed along with the anticipated completion date.

Quigley makes no guarantee as to the completion date. Quigley Motor Company assumes no responsibility for any interest charges that may be incurred during the vehicle’s pause at Quigley. For vehicles on Ship-Thru status, Quigley does not control when the vehicle will be delivered to the dealership.

GM Technical Center

Work Vehicle

No matter the size of your business or profession, government or emergency, the safety and security of your team and equipment is a top priority. Upfitting a commercial van to 4 wheel drive means safety remains a top priority, no matter what.

People Mover

Universities, Airports, Ski Resorts, Guided Hunts, Volcanoes and Observatories abound. Moving the maximum number of people with the minimum number of vehicles in difficult terrain and off-road locations is where we can help.


Quigley installed 4×4 system onto hundreds of conversion vans and RVs. Different terrains require different driving techniques, and we suggest you familiarize yourself with your vehicle before tackling remote areas.

Have Questions?

Let’s start a conversation and figure out what is going to be best for all of your needs.