Is their any difference beteew the two ccm modules on the Fleetwood brougham, as DRL beacme standard on the car in 96, also cars shipped to canada were required to have DRL on the car inorder for it to be on the roads up there.

great question, I only know that 94 + 95 will work
that is interchange
(you must have the key from the car the ccm comes out of)
we never could get a clear answer if the 96 differed
since drl were available as an option all along
and did the obd2 change anything?

Reason why I'm asking this question as it has to do with putting DRL's on my 94 fleetwood, Has anyone done this!!! If So How did you install it in you car, am looking at original components from GM, Not the ad hoc from after marketers. Yes somewhere in the plan GM ,It seems Cadilliac uses the CCM along with this feature, While Buick Does not, Buick accomplishes it with a dropping diod, additional wire loom with connectors & module, Cadilliac uses same components along with inputs & outputs to the ccm.