Heater blower doesn't run

buicktom61

Member
Hello from Germany!
I own a 86 GN with digital dash and digital AC control unit. In winter I put a new AC compressor into the car, because it was very noisy.
Now I want to refill the system, but my heater doesn't run. I checked it with direct 12V from the battery and it works. It seems to be that my AC/heater control unit is not working.
How can I check it and may be where can I get a new one? Or is there anybody, who can rebuild it?

Thanks for your help.
Thomas
 

pacecarta

LOGGED OUT
Staff member
caspers electronics sells a fan control module for the 86 C68 digital climate control ac system
 
Hello from Germany!
I own a 86 GN with digital dash and digital AC control unit. In winter I put a new AC compressor into the car, because it was very noisy.
Now I want to refill the system, but my heater doesn't run. I checked it with direct 12V from the battery and it works. It seems to be that my AC/heater control unit is not working.
How can I check it and may be where can I get a new one? Or is there anybody, who can rebuild it?

Thanks for your help.
Thomas
GOOD LUCK
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 and low settings works every time.
 

captndave737

Well-Known Member
I'd check power at pin C1 on the blower and clutch control module (fuseable link) and I'd clean and tighten the terminals on C892. When mine wasn't working last year it was a poor connection.
 

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