I purchased that module and still didn't work. Even had my head unit accidentally replaced by a "Buick shop" with a unit that soppusedly know good and it still didn't work.
The only thing that got mine to work perfectly was having it replaced with a manual unit. Heat and AC, high...
With all due respect - I have one in my 86 and get NO fuel smell out of it must be working, also added one to my hybrid and it got rid of the fuel smell.
The one on the 86 has 85k plus miles on it.
The one on the hybrid had over 180k miles on it.
Good luck guys which ever way you go.