for Isuzu IDSS for ISUZU Heavy Duty Truck excavator diagnostic scanner for ISUZU IDSS III 

The g-idss is for trucks and the e-idss is for excavators. 

the 2 item has different software and E-IDSS has 1 more ISUZU EMPSIII cable.

for ISUZU IDSS is designed to support Isuzu Commercial Vehicles. With each new release of the IDSS program, additional vehicle engine configurations and controller systems may be supported.

used to accompany certain IDSS functions.

Which vehicles does IDSS support:

IDSS supports only U.S. or Canadian specification Isuzu vehicles at this time

N/W series w/5.2L Diesel (4HK1)

N/W series w/6.0L Gas

F/T series w/7.8L Diesel (6HK1)

H/C series w/7.8L Diesel (6HK1)