99 Buick Regal blower motor problem

[mgolden17]

I replaced the blower motor on my 99 Regal. The heater blew air for one week, then suddenly stopped. I've got auto climate control, and was wondering if if I could have the A/C control module tested (I have removed the blower motor and the module already)? Is there any way to test the module? Also if not those two things, what else could it be?
Thanks

[Old Lar]

I traded in by 99 Buick in '06 because of too many problems with the AC sysytem. I am sure the systems can be tested by an AC shop or the dealer. $$$ The auto control system was a nice feature, but with any fully automatic system, when something goes wrong get ready for a wallet attack.

[HotZ28]

Originally Posted by mgolden17

I replaced the blower motor on my 99 Regal. The heater blew air for one week, then suddenly stopped. I've got auto climate control, and was wondering if if I could have the A/C control module tested (I have removed the blower motor and the module already)? Is there any way to test the module? Also if not those two things, what else could it be?
Thanks

Have you tried to apply 12v directly to the blower motor positive terminal, to see if the motor is operational? If the motor runs, check the purple wire to the blower motor with fan speed control on high and ignition switch ON. If no power here, you can suspect the blower control module, not the A/C controller. The blower control module looks specifically like the one in the pic below.

DELCO # 15-8756 GM # 5247997

[BNaylor]

Is that a facsimile Bo? Doesn't look like a blower motor control module for a '99 Regal LS or GS with the CJ2 ACC to me.

Also, if the blower motor turns out to be bad the OP should ensure he gets the right one since the manual and ACC system use different blower motors by part number.

[HotZ28]

Originally Posted by BNaylor

Is that a facsimile Bo?

No Bob, just an example. I guess I should have said; simlar in function, but not in apperance!
BTW, thanks for the correct pic, I have one like that somewhere, but couldn't find it! Wait a minute, I found it!

DELCO # 15-8756 GM # 5247997

[mgolden17]

Thanks Guys,
I pulled that *&%$ control module. I guess I'll hot wire test the motor now. Do you think it would be worth it to get a junk control module, or just bite the bullet and get a new one?

Thanks again.

[mgolden17]

Thanks for all your help.
Well I tested the motor, worked fine. Got to looking further into the troubleshooting, and discovered the low blower fuse was missing from the panel. I got it all put back together, and it all works fine. My only question is why did the system run for one week and then decide it needed that fuse?

[BNaylor]

The most logical explanation is that specific fuse is missing by default or not supposed to be installed. Pull it out and see what it does.

I don't have it installed and mine works fine.