The post shows three specific tools for scania, gm and porsche.

1. Specific tools respectively for Scania, GM and
Porsche
Find specific tools respectively for Scania, GM and Porsche for diagnosis, scanning
and programming and so on. Here recommends you respectively scania vci ii, GM
Tech2 and FVDI Porsche Commander.
Scania vci ii
Scania VCI 2 SDP3 V2.17 Truck Diagnostic Tool Scania VCI II Tester Newest
(Promotion Price US$299.99) It is now no need dongle, activation any more.
Replaced version of VCI I, covering Scania diagnosis and programming for latest
Scania trucks, buses and other heavy vehicles. Besides, it supports English, German,
Spanish, French, Japanese, Dutch, Polish, Portuguese, Swedish, Norwegian, Suomi,
Turkish, Italian, Czech and Russian.
GM Tech2
Best Price GM Tech2 GM Diagnostic Tool (Work for
GM/SAAB/OPEL/SUZUKI/ISUZU/Holden, with promotion price now US$349.99 in

2. careucar.)
GM Tech2 GM scan tool is an excellent tester for Technicians to diagnose GM
vehicles. The Vetronix GM Tech 2 comes with Authentic GM software and supports
on-board diagnostics on all GM systems 1992 thru 2013, while programming for GM
cars till 2007.
Besides, it is available with functions like capture stored DTCs, Freeze Frame, and
Failure Record for later review, view the status of vehicle diagnostic tests as they run
and provide full bi-directional control when performing power train, chassis, and
body diagnostics.
Tech2 with CAN diagnostic interface, it works with vehicles under OBD, OBDII and
CAN protocols.
FVDI Porsche Commander
FVDI Porsche Commander for Porsche V4.1 (with Free Hyundai/Kia/Tag Key Tool

3. software),
FVDI Porsche Commander for Porsche is professional software for diagnostic of
Porsche vehicles. It is capable to perform a diagnostic of any unit. It provides some
unique functions, which are not supported by any other diagnostic tool.
It supports standard diagnostic functions (like reading identification data, read error,
for all electronic control units), special functions (such as Porsche Cayenne -
Read/Write EEprom, Read/Change odometer) and advanced functions (including
calculating teaching code from Alarm system - Porsche (9x6) and key learning).
scania vci ii, GM Tech2 and FVDI Porsche Commander specifically for Scania, GM and
Porsche. However, there are also some other specific tools for these makes, like
Porsche Piwis ii for Porsche car diagnosis.