While the links work on the computer, the GM web site puts the iPad user on a non-flash web page. The result is the manual is not downloading as normal .PDF files do. Even using GoodReader creates the non-flash page instead of the manual. GM needs to work on their site for iPad and iPhone users. An alternative will be to save the .PDF to the computer and transfer manually to the iPad.
As noted on Introduction iii, this is the Second Printing.
Scanning the index of the first and second printing shows that most of the sections have additional pages.
Copying the manual to the iPhone, iPad or other touch screen device allows quicker access and search than thumbing through the paper pages (except for Post-It-Notes indexing!) Being able to tap the table of contents or index and proceed directly to that page will save valuable time when learning the features or brushing up on a subject before the need arises. The diagrams that have the letters pointing to each part don't link, but the lettered descriptions on the following page have active links. Thank you GM for all the links.
Another great feature of the .PDF manual are zoomable graphics. Unfortunately they are scanned images instead of native PDF, but at least they have more resolution than at the original size.
Of course the best thing about having the manual in a portable device is being able to reference it wherever you are. It's going to take practice finding the controls in the center stack, and that learning process should always be done while in Park. Reading ahead of time will save time and be safer. For those who will be pulling the paper manual from the glove compartment, you will save energy that can be used for extra miles in the Volt.
Scrolling and paging through both versions does indicate changes where a topic was expanded slightly (ex: OnStar on page 2-2), some icons and text added (ex: Remote Start on page 2-8), or where text was removed (see Clock on page 5-42.) These are just a few and I don't intend to search for them all.
For those who bought the paper manual, the main difference will be referencing page numbers. Topics tend to start and end more gracefully on the page or column, rather than being bunched together. That is the major difference in the visual appearance. Both are an excellent reference.
Reading old posts and trying to reference the new page number should be a challenge, but that is a great reason to hold onto the first printing.