Bidirectional scan tool X431 Diagun IV can not work on Oldsmobile ?

Video from Pine Hollow Auto Diagnostics

Part 2:
2002 Suzuki XL-7
1996 Mercury Mystique at 9:00
1992 Oldsmobile Sillouhette at 20:37


The video show X431 Diagun IV can not work on Oldsmobile,anyone use it and test it on 1992 Oldsmobile Sillouhette ?

Difficult to say if it was a representative test as the Silhouette that Ivan was connecting to is a thousand faults that just happens to look like a car,

For 99% of techs not connecting to early OBD1 isn't a worry, and although the Diagun is great value for a vry powerful bi-directional tool with fantastic vehicle coverage for most hobbists spending 700$ (£600) isn't an option. I am sure some of the other members will pass on experiemce of tools for older GM particularly what might be available on the secondhand market.

Thank you!
video here
Launch X431 DiagunIV vs. Snap-On vs. Autel - Part 2


Hope these guys share their experience once test it on Oldsmobile .

Sounds like a good excuse to not have to work on 92 Oldsmobiles