Automotive Service Manuals Frequently Asked Questions
What you need to know when buying service, repair, maintenance, and electrical manuals for your vehicle
This FAQ is designed to help you understand what we sell here at Ethyl’s Garage Automotive Bookstore; how our original print factory manuals differ from aftermarket third-party books, digital manuals, downloads, and PDFs, and how to find the correct factory service manual for your vehicle.
What kinds of Vehicle Manuals Does Ethyl’s Garage Automotive Bookstore Sell?
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You can buy original OEM factory service manuals right here from our Ethyl’s Garage Automotive Bookstore eCommerce shop. We carry:
- Original OEM factory print service manuals for cars and trucks. These are also called shop manuals, repair maintenance manuals, or workshop manuals. These manuals cover most standard service procedures that would be done in a vehicle dealer service department.
- You might need a service manual to:
- Make adjustments to the brakes, valves, ignition timing, or belts
- Change a clutch
- Replace components such as a starter motor, alternator, water pump, power steering pump, radiator, belts, brake reservoir.
- Original OEM factory print overhaul manuals. These are also called unit repair manuals. These manuals cover major repairs and rebuilds of vehicle components.
- You might need an overhaul manual to rebuild a:
- Transmission
- Differential
- Power steering box
- Engine
- Original OEM factory print body manuals. These cover service of body and interior components not covered in the chassis manual. These are a General–Motors–specific manual type used through 1988.
- You might need a GM body manual to work on:
- Door hinges
- Trim
- Upholstery
- Interior panels
- Stationary and regulated glass
- Restoration
- Original OEM factory print electrical manuals. These could be called electrical and vacuum troubleshooting manuals (EVTM—Ford specific), electrical troubleshooting manuals, or wiring diagram manuals.
- You might need an electrical manual to:
- Diagnose, troubleshoot, and repair an electrical problem.
- Restoring stock condition
👉 Find the manual you need for your vehicle here: Shop Factory Service Manuals
A factory service manual (FSM) is also called a dealer service manual or OEM (original equipment manufacturer) manual. It is written by the automobile manufacturer to be used by service technicians at auto dealers. These are also used by independent mechanics, restoration specialists, and home mechanics.
A factory service manual is the definitive reference source for maintenance, service, and repair information for the models it covers.
Third-party aftermarket manuals omit much of the detailed information included in factory manuals. They can be handy for simple routine maintenance tasks. But they may not contain all the information required for more substantial repairs, complex work, or restoration and overhaul projects.
If you’re experienced working on vehicles and you’ve run into the limits of third-party manuals, you will find the details you need in factory service manuals. Factory service manuals include detailed information for:
- Brake jobs
- Replacing tie-rod ends
- Replacing accessories such as water pumps and alternators
- Resolving engine code issues
- Tuneups & emissions
- Electrical problem diagnosis and repair
- Restoration and overhaul projects
- And other more complex work
The factory manual covers all models, versions, options, trim levels, and body styles for each model for the model year of that manual. Even rare versions that are not included in third-party manuals are covered. Our descriptions list the models covered by each manual.
If you’re not sure which manual or manuals you need for your vehicle, please contact us. We’re always happy to answer your questions.
We give almost all our used manual a condition rating of Used-Acceptable. Our original factory manuals come out of vehicle dealership service departments and other repair shops. Some may have been lightly used. Others have a lot more patina from use.
We decided to not grade our manuals (Very Good, Good, Fair, Poor, etc.). The quality of materials and binding varies from year to year and manufacturer to manufacturer. Some of our manuals are very old. Some have been repaired by mechanics with whatever they had at hand.
We aim to give our customers a good value for a complete, usable manual with no missing sections. We inspect each manual for quality control before shipping it to you. We make professional repairs when needed. We will send you the best manual we have in current stock when you place your order.
At Ethyl’s Garage Automotive Bookstore we like good old-fashioned print manuals because they are so easy to use. Original print manuals always work:
- They don’t need batteries, cords, or chargers.
- You can use bookmarks or sticky notes to mark sections or pages you need for your current project. No need to scroll back and forth endlessly to find the right section.
- They will not become obsolete when you upgrade your technology. Will that digital version still work with your new device?
Some digital versions are authorized by the manufacturers. Many PDFs you find on various websites are pirates of dubious quality. Many digital versions of manuals use scanned images of manual pages rather than actual text. The quality and readability of these images varies.
Original print factory service manuals and wiring diagrams may contain color images. These may be reproduced in black and white in copies or reprints.
Digital versions of manuals may not be indexed. So it can be hard to navigate to the section you need.
Paper reprints may not be the same quality as the original factory manual. We’ve seen some where the illustrations are too dark, blurry, or otherwise hard to read.
We have heard from customers who paid for a digital download only to find it did not meet their needs. They hoped to save time or money. They ended up buying an original factory manual after all.
Yes we do. Helm and Bentley are the companies that actually print factory manuals for automotive manufacturers. Automotive manufacturers specialize in making vehicles not books. Helm and Bentley run the big printing operations that print the manuals for many manufacturers. Most of our more recent original factory manuals were printed by one of these companies.
👉 Find the official factory manual for your vehicle here: Shop Factory Service Manuals
We process orders the same or next business day. Orders are delivered to the Post Office the day they are processed. We use USPS Media Mail to give our customers the best value. Many of our manuals are very heavy so this saves our customers a lot of money compared to other shipping options.
Ethyl’s has developed a special way of packing our books that is unique in the used vehicle manual business. We wrap our books in “corrugated cohesive wrap.” This type of packaging better protects books from damage such as bent corners during shipping. Plus, it can easily be recycled with your paper/cardboard recycling.

If you accidentally order the wrong book, you may return it within 30 days for a refund. We will issue the refund when we receive the return package.
If we make a mistake and send you the wrong book or a book that is not up to our quality standards, we will send you a return label and issue a refund.
Please see our Return Policy for more information.