2005 Silverado 5.3 Z71 - I have a manual climate control. Turned the A/C on today and hot air was blowing out of the passenger vents. The air was cold ...

gray3696 · by **gray3696** [OP] » Apr 09 2011, 3:08am

I have a manual climate control. Turned the A/C on today and hot air was blowing out of the passenger vents. The air was cold on the drivers side. I recently changed the battery in my truck. Could changing the battery cause my problem? 2005 Silverado 5.3 Z71.

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lzn197 · by **lzn197** » Apr 09 2011, 5:07pm

Try cycling your temp control from hot to cold a few times and see if it fixes itself. Did you remove the battery cable with the key on?? Naughty naughty!!

Bobcat94 · by **Bobcat94** » May 01 2011, 3:23am

Sounds like we have a similar problem. I have the same truck that you do. I can get in the truck and with out any kind of warning I get full heat and am not able to affect it unless I kill the engine and then fire it back up. My initial thought is that the controller is going south, but I have not had a chance to do any serious digging yet. Have you noticed any other electrical issues? I have noticed that my lights will dim if I am at idle and have a heavy electrical load. Lights will brighten considerably with a higher RPM. Perhaps there is a link. I'll send you an update if I figure anything out this week.

gray3696 · by **gray3696** [OP] » May 02 2011, 1:38pm

Bobcat94 wrote:Sounds like we have a similar problem. I have the same truck that you do. I can get in the truck and with out any kind of warning I get full heat and am not able to affect it unless I kill the engine and then fire it back up. My initial thought is that the controller is going south, but I have not had a chance to do any serious digging yet. Have you noticed any other electrical issues? I have noticed that my lights will dim if I am at idle and have a heavy electrical load. Lights will brighten considerably with a higher RPM. Perhaps there is a link. I'll send you an update if I figure anything out this week.

The actuator went bad. I haven't had any more electrical problems. The entire dash had to be taken out to replace the actuator.

Hartski · by **Hartski** » May 02 2011, 1:53pm

Haha, I saw the title and I couldn't help but think "Tell her to be quiet"

I'm a bad, bad Hartski.

EKinMN · by **EKinMN** » May 03 2011, 4:28am

BAD HARTSKI! I don't know if I should delete your post, scold you, or laugh.

OK... :lol:

but don't let it happen again!

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2005 Silverado 5.3 Z71 - I have a manual climate control. Turned the A/C on today and hot air was blowing out of the passenger vents. The air was cold ...

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