Six Part Numbers?


Current Part Number (25938052), Obsolete Part Numbers (15222526, 15858813, 15235202, 10385389, 10395614).
Plus the AC-Delco number of 15-73932.
I get that parts get revisions, but I'm curious about what was changed over the years. All six part numbers interchange.
Oh, and it's a "joy" when the module takes a dump on a bright, sunny 90+ degree day in Florida.


It worked great until I parked in the sun while grabbing dinner.
Tore everything apart again and double checked the fuses.
Fuses looked fine.
Power at the switched leads.
No power at the B+ lead.
Hmmmmm.
Change that fuse even though it looked fine.
Power at the B+ lead now.
I think it's fixed now... knock on wood.
And I have a spare HVAC controller in excellent cosmetic condition as well as the new one I'm leaving installed in the dash.







