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... :D 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.comIt'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.
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 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.
.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. :smoke: |
Re: PDF of Square Schematics & GM Training Manuals
That's awesome!
Thanks for taking the time and sharing them. Posted via Mobile Device |
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That will Help me a bunch , Thank You
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Somebody archive or sticky this?
Posted via Mobile Device |
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Thanks for taking the time to scan and make them available.
Alex. |
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I have a 1983 Gm 10 bolt in my basement that I'm working on now, you just made my day. My hat is off to you, thanks.
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Re: PDF of Square Schematics & GM Training Manuals
Very cool. Thanks!
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You have done a great service, one of the guys on the Jeep forum did that with all 3 CJ manuals, about 2500 pages THAT was a lot of work. I hate to know how many pages all these were.
Thank you! |
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I scanned @7,000 pages from all six 73-91 parts books and Ian Harding hosted them on gmpartswiki.com for us. They are posted by publishing date and not coverage date so... Thankfully they are all loose leaf 3 ring bound on heavy bond paper the sheetfeed scanner passed them through in several hours over 5 days. Several reasons to do this. The parts manuals are searchable PDF files now and I can bag the originals to keep them dry and stuff them in a metal box in the attic. Helm is no longer printing the wiring manuals and some of mine are getting a little yellow around the edges. Not brittle yet but that's the next step. Electronic copies backed up to the cloud in several places keeps them available to everyone and it'll be difficult to loose access to them via age and acts of god. It's good Karma too. |
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This is pretty awesome thanks!
Do you happen to know of a source that has pdfs of owners/drivers manuals for these years? |
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Added 1991 RV P Schematics.
GM got serious about troubleshooting with these. This manual actually includes harness routing diagrams and component locators along with troubleshooting tables. |
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Thanks again!
Sticky! Sticky! Sticky! |
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YOU THE MAN!
I was just looking for a NP208 manual, because mine is leaking ATF and I wanted to see how hard is to take these babys apart...WOW, thanks for sharing! |
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sweet, thanks
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Thanks they will come in handy...
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Re: PDF of Square Schematics & GM Training Manuals
Hell yeah brotha!!
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Re: PDF of Square Schematics & GM Training Manuals
Thank you for sharing these! Adding them to my archives.
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I am a new member from an island east off Spain, starting my restoration of a 1970 c20 with a 350 in it. Does anyone know where can I download or get a pdf copy of a manual?
Thanks a lot |
Re: PDF of Square Schematics & GM Training Manuals
Not to sound unappreciative, but thanks to you posting this wonderful information I have now aborted my plans to actually be on time for a deadline, and spend at least four hours glomming this stuff.
Thanks! |
Re: PDF of Square Schematics & GM Training Manuals
As I have done for many others, I have these posted along with tons of other documents over on my site just on the off chance the boards lose them or your account goes away.
http://www.2heeldrive.com/Chevrolet/ I'm adding content fairly regularly, but let me know if you need something and don't see it listed. |
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sure, no problem. I appreciate all the work involved..
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Uploaded & linked 73-75 wiring diagrams.
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Thanks for so much info. Cant seem to find 67-72 scanned manual though.
Keep up the good work |
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http://67-72chevytrucks.com/vboard/s...d.php?t=185856 Wiper error in that diagram http://67-72chevytrucks.com/vboard/s...d.php?t=426202 |
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Alex. |
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Dang :jdp: No kidding!! Not family or work friendly... I don't recommend opening that one either. |
Re: PDF of Square Schematics & GM Training Manuals
Very Sweet!!! Thank You!!
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I printed off the Cruise one. I can only hope and pray that it holds true for my '86 or at least gets me close enough as my cruise just stopped working yesterday. Wiring diagram will come in handy as well when I get ready for a stereo upgrade in the coming months. Thanks hatzie!!!
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What kind of limits does rapidshare have now that they seem to have gone legit? Alex. |
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Thank You So Much Hatzie. I bought this '85 C20 from a friend of mine ,for my newly turned 16 yr. old son,and it has been hell ever since.They turned an automatic into a 4 speed manual with granny gears but did not do it right!!!
Truely appreciative from Texas' Lance |
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I've begun scanning some of the 73-81 Gm Light Truck Service and Unit Repair Manuals I've collected. |
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73-81 light truck? Wow, Hatzie, you're a hero. Can't wait to use it. I wish I could scan things for the rest.
Thanks truly |
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Does anyone have a NV4500 service/rebuild manual in PDF?
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Acrobat 9 had a fatal error on my PC. It decided to encrypt the service manual files with a random key. I had to re-install Acrobat to get it back to normal.
I am in the process of re-building the manual files from the ABYY 11 raw scan folders. I will upload new copies tomorrow. |
Re: PDF of Square Schematics & GM Training Manuals
Uploaded some 73-81 Service and Unit-Repair/Overhaul manual scans. I'll post more as I have time to scan them.
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