1992 Chevrolet Lumina APV Q&A

1992 Chevrolet Lumina APV Question: Lumina APV 3.8 "code 56 quad driver module" engine does not run is unstable

Greetings I have a Lumina APV mini vans 1992 3.8 engine my problem is I do not have strength to run and minimum is very unstable and vibrates much put a wire on terminals "B" and "A" connector obd1 appears fault code 56 "quad driver module". I can do -
Answer 1
possible ecm failure. quad driver is in the ecm. make sure it is the failure before commiting to a repair Roy -