Being a Heavy duty mechanic I found it quite frustrating to buy a reasonably priced CAT SIS ? diagnostics software and CAT III 317-7485 adapter for CATERPILLAR? equipment. I also prefer to have everything installed on a laptop since I do not want to have to deal with installation, drivers, setup, activation, updates, etc… I just want something to PLUG and PLAY out of the box!

I service mostly HEAVY DUTY equipment like CAT Caterpillar ET? Trucks, HIGHWAY and OFF HIGHWAY equipment and needed a DEALER version to service our CAT equipment since my local dealer was gouging the living hell out of me! It was like have a 2nd ex-wife leeching me! (One Ex is enough!)


We have done work on CAT? Excavators, truck engines, tractors, loaders, dump trucks, backhoes, combines, asphalt pavers, compactors, graders and more. I wanted to share a good experience I had with buying this CAT ET SIS 3 III USB adapter 317-7485 TOUGHBOOK package from the folks at

The Heavy Duty Diagnostic CAT ET SIS unit they sell came ready to go out of the box with a refurbished Panasonic Toughbook CF-30 (NEW adapters) which I think are the toughest laptops ever made! No wonder the police and military guys use these… I sure would not do this with my slim little Lenovo! (I dropped it once and had to replace the shattered screen)

Other software that was also included as a bonus was

CAT Caterpillar? Dealer Version SIS ET? Highway + Off-Highway equipment
Detroit Diesel DDDL 7.05 + Detroit Diesel DDCT + Detroit Diesel Calibration Tool
International ICAP, IPTS, NETS, IPC + – International Master Diagnostic
V Macks 2.6.12 + – V Macks Dealer Pro
Meritor and Wabco Diagnostics
Eaton Service Ranger 3.2
Cummins Insite
Perkins EST 2010B
Volvo VCADS 2.35.10
Nissan – Toyota
Hino 2.0.3.

If you are working on equipment that is not CAT then you will probably need a package with the NEXIQ 2 USB adapter, that can work with Cummins engines, etc… I also like the fact that you could choose a MUCH FASTER SSD hard drive! If you have never used an SSD, welcome to the future! These hard drives are FASTER, more reliable (no moving parts), lighter and even use less battery power.

I had bought another package like this previously from some other Chinese seller because it was so cheap, but I kept running into CAT ET SIS Expired license error then CAT ERROR 142 baud rate, CAT ERROR 231, CAT ERROR 275 and CAT ERROR 434. It was one nightmare after another.. so keep in mind the cheapest price can also ending costing you more in your pocketbook in the long run, plus lost billing time and I think I lost some hair as well on that one! I almost took a hammer to my poor Lenovo ;) like this guy!

Bottom line is I recommend a Toughbook since it designed to be used outdoors in the bright sun (most laptop screens will wash out competely in bright sunlight, but not his one) Can handle sand, dirt, rain, being dropped is no problem as well. I will never use a Lenovo or Dell for my expensive mechanic software again due to the cost and hassle of reinstalling and licensing if the hardware fails.

Do it right and do it once. I hope this helped someone else from losing their hair from frustration ;)

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