Digital heater/ AC unit problem

buicktom61

Member
Hi,

my GN has the digital heater/ AC unit. Before I took my engine off for repair and cleaning the engine bay, the heater worked without flashing diods. After putting all together, the diods on the unit is flashing. Any idea where the problem is.

Thanks for your help and greetings from Germany.

Thomas
 

blackazz

Not a Gn
Hello,mine does the same thing and makes a plastic gear grinding noise hopefully someone will chime in an point out the problem.

Sent from my SM-G920T using Tapatalk
 

TurboDave

RIP DAVE
Staff member
TurboBuick.Com Supporter!
Hello,mine does the same thing and makes a plastic gear grinding noise hopefully someone will chime in an point out the problem.

Sent from my SM-G920T using Tapatalk

In your case if you get your glove box out and out of the way, you will probably find that your blend door actuator is faulty and needs replacement.

Not sure about the OP's flashing lights though. It may be that his blend door actuator is jammed at one end or the other also.

The blend door actuator is the most common point of failure on the digital systems.
 
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