4x4 Vans : Quigley Motor Company, Inc. > Technical Center > GM Tech Center > Maintenance Schedule

Maintenance Schedules

Lubrication, Inspection and Routine Maintenance for GM 4x4 Vans
(Keep Copy with Vehicle Records)

Independent Front Suspension (IFS) 4x4 Systems

There are four types of Quigley 4x4 systems used on GM Vans since 1974. Our current style is our 2nd generation Independent Front Suspension, or IFS, released in 2003. This system incorporates GM's locking differential instead of lock-out hubs to engage the 4x4 system. Download "Current IFS Routine Maintenance Schedule" below. 

If your IFS system has manual lock-out hubs then you have our first generation IFS system, from 2002. This hub and bearing assembly is of a serviceable style. For this IFS 4x4 system please download and print out our "2002 IFS Routine Maintenance Schedule".

Solid Axle 4x4 Systems

Another Quigley GM 4x4 system was a solid axle coil spring suspension. This style coil spring suspension ran from 2006 – early 2009. Our coil spring suspension utilizes a non-serviceable hub and bearing assembly. If you have this style Quigley 4x4 system then please download and retain a copy of the "GM Solid Coil Axle Routine Maintenance Schedule".

The final Quigley GM 4x4 option was a solid axle leaf spring suspension 4x4 system. Our solid axle leaf spring GM units consisted of a manual lock-out hub, which are of a serviceable hub and bearing assembly. For this type of Quigley GM 4x4 vehicle please download and retain a copy of the "GM Solid Leaf Axle Routine Maintenance Schedule".

If you have any question or are unsure of your style Quigley 4x4 GM please contact our customer service department and supply us with either your entire Vehicle Identification Number (VIN) or the last 8-digits. We are never more than a phone call or email away.

We recommend that you download and print out the appropriate Quigley routine maintenance schedule below and keep a copy in your vehicle as well as in your vehicle records. If you are not sure which type of axle system your Quigley vehicle has, you may contact us and supply the last 8-digits of your VIN (vehicle identification number).