Weird smell when A/C is turned on

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I've seen someone post a pic on here in the past of a brass fitting screwed into the duct right near where the filter would go to hook up a can of cleaner and spray it in there while it's running.

You can also pull the 2 screws that hold the resistor pack in the duct to gain access to spray cleaner.

Someone with a Tech2 can enable the "afterblow" feature, which was made to help prevent mold/mildew growth. If the outside temp is above 70 and the AC ran during the last ignition cycle, the blower will turn on at 68% power for like 5mins, 30mins after the ignition has been turned off.

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chilleblanco36

chilleblanco36

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I've seen someone post a pic on here in the past of a brass fitting screwed into the duct right near where the filter would go to hook up a can of cleaner and spray it in there while it's running.

You can also pull the 2 screws that hold the resistor pack in the duct to gain access to spray cleaner.

Someone with a Tech2 can enable the "afterblow" feature, which was made to help prevent mold/mildew growth. If the outside temp is above 70 and the AC ran during the last ignition cycle, the blower will turn on at 68% power for like 5mins, 30mins after the ignition has been turned off.

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Do you know if it has to be a gm tech2 or just any tech2 scanner should do it?


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yugrus

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My old Maxidas scanner can do it as well.

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chilleblanco36

chilleblanco36

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You mean like a Tech2 clone?

My Tech2 clone can do it

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Yes, what brand is it and what should I look for if I decide to simply purchase one. I usually use a Bluetooth dongle that works with an app for code reading.


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chilleblanco36

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Hey guys. When we tried to turn on the afterblow option we got an error. Anyone have any idea of how to fix this?

dc6983a9ce459052a4a0840eecc11aeb.jpg


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79jasper

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Someone with a Tech2 can enable the "afterblow" feature, which was made to help prevent mold/mildew growth. If the outside temp is above 70 and the AC ran during the last ignition cycle, the blower will turn on at 68% power for like 5mins, 30mins after the ignition has been turned off.

First I've heard of this, makes sense though.
What years can you do this on?

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yugrus

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Check afterblow option if it's enabled. This might not be an error after all.

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