All-Data for semis?

If you have a paccar truck sign up with your dealer for Fleet Ecat. That gives you parts break downs and wiring diagrams, and it’s free. Be aware of the companies like Mitchell, they are legit, but they are very expensive, and the info can be spotty sometimes. They are set up for a shop running a lot of different trucks, not O/O or small fleets.

 

You would need to talk to them, and they should give you a trial. That would be the best way to find out. Most times the person selling it tends to be over optimistic.
I would check with your truck dealer to find out what is available from them. For Paccar it is only the truck VIN's in your fleet. If you are working on someone else's trucks, you should be able to get them set up for themselves and then use their account. It would be a lot of hassle, but the info quality might be better, especially schematics.
Basically anything you are looking at it would be best to get a trial and go in with both eyes wide open, because the people selling the aftermarket scanners and info tend to think their systems do more than they actually do.

 

Diesel Laptops may have what you need. Son picked up a couple handhelds from them in the 5-600$ range. For code reading and forced regens, etc, they have worked well.

Not gonna work if you need the ability to change parameters

 

Gotcha. You mentioned Mitchells, i shoulda caught on to that.

 

Why not just buy Freightliner manuals from a dealer? It cost me $275 10 years ago.

 

The aftermarket one stop shop for service information has never been strong. There’s always been holes and lack of correct information where you end up needing to source OEM service information. All data and Mitchell were the strongest options for Automotive. Medium and heavy duty has never had anything due to the Mix of engines and drivetrains across all makes. So, No there is not a one stop shop for service info.

Much of the service information for transmissions, axles , ABS, and steering- suspension can be found for free at the respected manufacturer website.

So you’re left with Engines, and Cab/ chassis. Which are heavily reliant on getting OEM access to service info. Usually thru a dealer or engine manufacturer.