Well you can try telling them, but they often don't listen in the sense they click the buttons they are trained to and have no idea what they do on the back end haha. Many people end up with 2 pulls total, but it won't kill you. 
But yes, call in tmrw, tell them you want to become a member and go through with their offer on the loan.
Take one of the cards while you're at it. I'm pretty sure they won't pull again for the card. Not 100% sure, but let's say 95% sure. Maybe someone with prior experience can chime in. You'll qualify for membership as long as your Chexsystems is clean generally.
If you have anything in chexsystem DCU with deny you flat out you will then have to clear it up get it updated and reapply. I had a 61$ showing in chexsystem from TDbank I closed my account and must of tack on some sort of fee td never informed me I applied to DCU and they approved me and was going super fast offering me all kind of credit products as my EQ was 698 then they just went cold turkey for two days I had to call them the rep said your membership is under review I ask to transfer to the membership department they transferred and the rep on that side said we have to take back the approvals and deny you membership as you have a negative account in chexsystem she said clear it up and wait three weeks till it up dates and reapply are call them if it updates sooner and they will try to continue the process.
Nice good stuff. Check chexsystems as well if you have a concern there as I was also approved with a member number and all then they hit me with the 61$ TD bank chexsystems thing 3days later.
@persocon wrote:well Assistant Manager Lyn did not know what she was talking about,
another hard pull showed up by DCU and contact number is different from auto loan hard pull
so 2 Hp from DCU one for auto loan one for member
DCU does 2hps. The only time it's a single hp is if you apply in branch for membership.
