GMC Motorhome Maintenance Manual
Suppliment X-7725
1977 - 1978

Thanks to Emery Stora for the loan of his hard copy of this document.

 

Please right click on these links and choose to save them to disk

The X7725 Maintenance Manual is a 39.8Mb pdf file.

If you have a slow internet connection or have trouble downloading this file, please Click HERE for smaller file segments.

Download these wiring diagram files and store them in the same directory as the above file. (They are referred to from within the manual.)

 1977 / 1978 12v DC  1977 / 1978 with Electro Level I
 1977 / 1978 120v AC  1977 / 1978 Transmode with Electro Level I
 1977 120v AC  1978 with Electro Level II
   1978 Transmode with Electro Level II

You'll need to install Adobe Acrobat Reader on your computer to view the book. You can download it HERE.

There is an adequate graphics viewer included with Windows but I like to use one with more options. One of the best all around viewers I've found is ACDsee. It's small and quick and has lots of options. You can get a copy of the Classic Version HERE.

 

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