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Technical Documents

One of the reasons GMC Eastern States was founded was to provide an avenue for gaining technical information regarding the maintenance and improvement of our classic motorhomes. Many of the files referenced below were developed for presentations or created for distribution to the members at rallies. As a service to the GMC community they are being made available here. Of course, there's nothing quite like attending a session in person. And, there's nothing like getting your hands on the documents to keep the thoughts alive after the presentation.

• Rebuilding that Motor by Larry Weidner. View/download the article.


• Rebuilding the Olds Engines by Jim Bounds. View/download the article.


• Throttle Body Fuel Injection Upgrade by Ray Swartzendruber. View/download the article.


• Fuel Injection for the GMC by Richard J. Waters. View/download the article.


• The GMC Motorhome Steering Box by Don Wirth. View/download the article.


• Saginaw Steering Boxes by Jim O'Clair (Hemmings Motor News). View/download the article.


• Steering Column Upgrade and Repair by Richard Sowers. View/download the article.


• A GMC-specific Toad Brake System by Fred Veenschoten. View/download the article.


• The Power Level Air Suspension from the Top Down by Rick Denney. View/download the article.


• Suggestions for Installing the QuadraBag System by Bill Brown. View/download the article.


• Guide to Final Drive Ratios and Tire Size Information by Brand by Don Brown. View/download the article.


• The Forgotten Ammeter by Frank Folkmann. View/download the article.


• GMC Motorhome Electrical System from the Top Down by Rick Denney. View/download the article.



• NEW: LED Tail Lights Connected by Tail Light Bulb Base by Tom Whitton. View/download the article.



• The Wonderful World of Type II HVAC Systems by Mark Wall. View/download the article.


• GMC Motorhome House Electrical System: Troubleshooting, Maintenance and Safety by Bob Hendrickson. View/download the article.


• Water Quality and Sanitizing Issues by Frank Folkmann. View/download the article.


• Horizontal Installation of the Atwood Furnace by Ray Swartzendruber. View/download the article.


• Operating and Troubleshooting the Suburban Dyna-Trail Furnace by John Nicholls. View/download the article.


• GMC Maintenance & Friends Application by Byron Songer. Download file for Macintosh. Download file for Windows.



• • • • • The synopses of the documents listed above can be found on the next page • • • • •