Rear AC blower not turning on.

ALANADRADE75

MEMBER
2007 GMC ACADIA
3.6L
V6
FWD
AUTOMATIC
146,000 MILES

Rear Ac blower not turning on. Everything in the front works fine. It started to turn on and off by itself and then one day it never came back on. Ac was cold and nice air flow before. But no it doesn't turn on. I have some fuses and relays under the hood but they seem to be ok. I don't know what else could it be.

3 Replies

HMAC300

MECHANIC
48,601 POSTS

Check rr blower motor fuse under hood fuse box 30amp first then have scanned for codes

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Friday, August 28th, 2015 AT 10:25 AM

ALANADRADE75

MEMBER
2 POSTS

Fuses are fine. And what do you mean scan for codes?

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Friday, August 28th, 2015 AT 1:00 PM

HMAC300

MECHANIC
48,601 POSTS

You are going to have to have a local pro hook up a computer and scan for codes for heater system to make sure it's not a bad control head for that. All theheaters practically everything in the cars today have computers to run them. Of course it could be a bad switch/blower/resistor that sort of thing but you would have power going to the blower then.

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Friday, August 28th, 2015 AT 3:48 PM