j3432454

No Luck yet.  The front air went out as well, it's stuck on defrost.  Dealer quote of 1500 to repair front.

Hi All!

I recently purchased a used 2013 NV3500 SL.   The rear blower motor does not work when the engine is running. 

Initially it wouldn't run at all, but I replaced the blower motor and now it turns on an runs fine when the ignition is in the accessory position (engine not running).  As soon as I start the engine the blower motor stops.

What I've done so far:

- Replaced rear blower motor

- Checked rear blower fuse under hood (good)

- Replaced front blower motor resistor

- Replace rear blower relay (in fuse box below steering wheel).

- Replaced Front air control panel

Running out of ideas....

Any other thoughts?

Thanks

Jamie