Thread: PDF of Square Schematics & GM Training Manuals
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Old 09-30-2012, 02:22 PM   #1
hatzie
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Join Date: Oct 2008
Location: Wentworth, NH
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PDF of Square Schematics & GM Training Manuals
** Added GM Delco radio manuals Oct 2015...

Over the years I have collected a bunch of GM service literature.
I own GM 1967-1980, & 1983-1991 GM Light Truck schematics as well as 1973-1991 GM Light Truck and 1984-1987 D-series CUCV Parts manuals. I also own many of the 67-91 Unit-Repair/Overhaul, Service, and Emissions Driveability Manuals.
Links to PDF Scans of service and STG manuals and a links to the Parts manuals. You'll need the FREE Adobe Acrobat reader to open these files. Get it directly from Adobe here {http://get.adobe.com/reader/}
If you're not interested in Adobe products there are several lightweight alternatives. wikipedia.org List_of_PDF_software
TechRepublic Review of five-lightweight-and-free-pdf-viewers/ an important fact they left out is... Foxit is Ad supported so factor that in.


Please Save these files on your local machine. Do not open in your web browser. The Mediafire PDF reader is not compatible with the Searchable PDF document type. The OCR text is visible along with the page image in the same space.

If you're good at loosing files Google "Void Tools Everything" and download direct from the developer. I've used this file search tool for years. It will find any misplaced file...

It looks like Mediafire has begun compressing PDF files as .gz GZIP archives. You can un-compress it with a universal file archive tool.
I use 7-ZIP because it opens darn near all archive formats, it's lightweight & fast, it's free, and so far it comes with no spyware or adware. http://www.7-zip.org.

Last and Not Least... These scans make a nice electronically searchable reference. But. I highly recommend buying used or even new paper copies. There's nothing like holding the book in your hands...

1973-1991 GM Light Truck Service, "Unit Repair" or Overhaul, and Wiring Manuals.

Notes;
-The earlier service manuals are interesting. They're geared toward troubleshooting rather than changing parts. They have a lot of basic procedure and theory of operation information you don't normally find in aftermarket and modern OEM service manuals.
-The Unit Repair and Overhaul manuals have in-depth GM re-build information on Axles, AC compressors, Hydro-Boost, Engines, Transmissions, and Transfer Cases.
-68-86 GM wiring manuals are 11.5"x36" fold-out pages. My scanner has a max page length of 34". These manuals require that I scan from each end, save as 0 compression TIFF, and stitch where the diagrams aren't real busy in GIMP 2.8 64bit.
-75 & 76 Light Duty Service & Overhaul Manual Supplement are supplements to 1974 Light Duty Service and Overhaul Manuals
-74, 75, 76 Medium & Heavy Duty service manuals are supplements to 1973 Medium & Heavy Duty Manuals.
-78 & 79 Medium & Heavy Duty service manuals are supplements to 1977 Medium & Heavy Duty Manuals.
-87-91 GM wiring manuals are A3 pages. I scanned these from cover to cover.
-87 wiring diagrams have an odd layout.
-81 & 82 8.5x11 GM wiring diagrams can be found in the back of the service manuals but these are a bit harder to follow as they don't carry the circuit from end to end on one page like the 11x36 pages.


GM STG (Service Training Group) Textbooks and References

AC
Axles & Steering
Brakes
Cruise Control Systems
Diesel
Electrical
Fuel Systems
Transmission / Transfer Case

Tech Writeups
1973-1991 GM Light Truck Parts and Illustration Catalogs
Hosted at: http://gmpartswiki.com
It's hosted with free access by Ian Harding. My scans of the 1973-1991 CK RV parts catalogs are searchable PDF files weighing in at 80-100 meg for each catalog set.
The site is organized by printing date not coverage dates. This list should allow you to find which CK RV catalog you need to search.
  • Catalog 51- 1973-1978 Feb, 1983 Printing GM CK G P Light Truck Parts
  • Catalog 51A 1973-1978 Feb, 1983 Printing GM CK G P Light Truck Illustrations
  • Catalog 52A 1979-1984 Sep, 1984 Printing GM CK Light Truck Parts & Illustrations
  • Catalog 52D 1984-1987 Oct, 1986 Printing GM D1-D3 1984-1987 CUCV Military Light Truck Parts & Illustrations
  • Catalog 52R 1985-1988 Jan, 1988 Printing GM CK 85-86 RV 87-88 Light Truck Parts & Illustrations *** Ian Harding scanned this catalog ***
  • Catalog 52R 1985-1991 Sep, 1990 Printing GM CK 85-86 RV 87-91 Light Truck Parts & Illustrations

    Medium Trucks...
  • Catalog 78TM 1973-1978 Sep, 1982 Printing GM 5000 & 6000 Medium Truck Parts
  • Catalog 82TM-GR-F 1973-1982 Jul, 1983 Printing GM Steel Conventional & Tilt AND School Bus Parts & Illustrations

Light Trucks Parts Books on My Server...

Note: you need both Parts and Illustration books to have a complete manual.

1973-1978 C/K G P1978-1984 C/K G P
CUCV
1985-86 C/K 1987-91 R/V
Radios ********** NEW May 22, 2015
Before you download these manuals. You will need more than a passing acquaintance with electronics repair and a bench of electronics tools. This does not mean a 40W Radio shack soldering iron and a precision screwdriver set.
You will likely need at a minimum a good Benchtop DC power supply capable of at least 24v and 3A, VTVOM, Analog Volt Ohm Meter, Digital Volt Ohm Meter, Precision Temp Controlled Solder Station, and various hand tools... You may need a good Oscilloscope, frequency counter, and Audio signal generator.
If you think I'm trying to scare you... I am.
If you don't have all or most of the above tooling, lots of patience, and a fair amount of experience with electronics and your tools (you didn't just buy em)... farm it out to one of the many competent radio guys. You'll be many dollars, a bunch of frustration, and lots of time ahead.
I have been searching for these as a complete un-butchered GM Radio manuals for a very long time. Be aware that most "complete radio manuals" on Fleabay are not anything of the sort. The Manual Mafia separate these into the internal chapters, label the chapters as a complete manual for whatever radio is on the first page, and sell them one chapter at a time for $30-$50 a chapter. They are cutting a rare reference book into chapters and spreading them to the four winds.



Service Manuals & Info
Useful Docs and Spreadsheets
What follows is an Excel 97 spreadsheet I put together several years ago to calculate the Speedo gears and engine RPM at various highway speeds. I was doing a "What-If" on transmissions, tires, and axle gear-sets and wanted to get transmission/transfer-case speedo gears as close to correct as possible. My 76 reads 1-2mph higher than actual speed. If my speedo reads 35 the local police dept's "Your speed is this" sign will read 33 or 34.

For Speedo gears you only need to edit the Tire Size & Axle ratio. The speedo gear table will automagically calculate the ideal Driven and Drive gears.
You then get to find which ones you can actually buy. You can edit the ratio adapter section to get you closer... If the gears you can actually buy are not close enough.

For the RPM tables you'll need to edit the transmission and Transfer case gear ratios as well. There are tables of ratios found in common trannys and transfer cases in the RH pane.
The Free Apache Open Office Suite https://www.openoffice.org/ and Free Libre Office Suite http://www.libreoffice.org/ 4.x and newer Office Suites "Calc" Spreadsheet applet will open and edit spreadsheets in Excel 97(XLS) & 2007 and newer (XLSX) formats. I lean toward Libre Office because the dev cycle for bugfixes and new features is shorter. Google Docs should open it on the web as well.
.XLS files sometimes have visual formatting issues in Libre Office and .ODS files have formatting issues in some versions of Excel. They will both open in either office package but I included both for more appealing visual layout in the office package of your chioce.

There are no Macros or VB Scripts. It's just a spreadsheet with some fairly complex formulas and color formatting.
MAC OSX and Windows Operating Systems since Windows XP have been able to open ZIP files without extra software if the functionality is not disabled by system policies. If you want a Free Open Source Archive tool get the 7-Zip tool http://www.7-zip.org/ If you don't like using 7Zip from the command line in Linux there's a GUI called PeaZip

Have a good one.
__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8

RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
Last edited by hatzie; 12-05-2021 at 12:11 PM. Reason: Replace 1989 Service manual link
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