GMC Motorhome Maintenance Schedules

This list of downloadable files and/or links is compiled as a service to the GMC Community. Accuracy is not guaranteed. Independent verification is urged. In addition, links are tested periodically but items/sites may have moved or dissolved.

Thank you, to the contributors that took the time to scan and/or share these items. When available, contribution credits are listed. We welcome all historical and technical information related to the GMC Motorhome.

Please submit changes, alterations or additional items you would like to share to . Thank you!


>> Maintenance Schedules

X7321A | 1973 Maintenance Schedule

X7415A | 1974 Maintenance Schedule

X7522A | 1975 Maintenance Schedule

X7622B | 1976 Maintenance Schedule (Source: Bill Bryant)

X7722A | 1977 Maintenance Schedule (Source: Emery Stora)

X7722B | 1977 w403 Engine Maintenance Schedule

X7822A | 1978 Maintenance Schedule (Source: Emery Stora)


>> Other Maintenance Items

GMC Motorhome Maintenance & Information Notes (Scan: Ken Henderson)
John N. Engebretsen PE, Engebretsen Engineering
The last update of this resource is 1993, a LOT of the information is obsolete. Most of the individuals mentioned are either deceased, no longer involved with GMC’s, or no longer performing the services mentioned. Likewise, many of the products promoted, and the part numbers offered are no longer available. Despite all that, the narrative can be invaluable to those just becoming acquainted with the GMC, and will help ensure that all major points of interest are at least addressed.


>> GMCMI Newsletter Collection & GMC Motorhome Information Available on Flash Drive

The 8g flash drive consists of over 1,200 items, here is a sampling: GMCMI Newsletters, Newsletter Article Index, Member Rosters and Addendums, GMC Parts and Service Suppliers Listings, Operators, Maintenance, and Onan Manuals, Wiring Diagrams and Structural Drawings, Factory Service and Recall Bulletins available on the GMCMI website.

All this information and tools are available on the drive itself. It does not require internet access and can be carried in your pocket for ease of access. This indispensable collection of GMC documentation and tools is available for purchase by GMCMI members for only $20 (shipping included)!

Click here to check out all of the items at the GMCMH Store including the GMCMI Flashdrive.