2003 Silverado Blower Motor Does Not Shut Off.

[bubba9459]

HVAC blower does not shut off, even with keys removed.

 

Any help is appreciated.

[BigJayDogg3]

Any codes?

[Draenor]

Look around, do a search. This is the second thread today.

 

 

Sorry it just doesnt seem like anyone puts any initiative to search for an answer first.

[bubba9459]

Yes, I tried the search before, I posted.

 

Nothing

 

No answers to the other post.

 

 

 

No codes

 

Thanks

[BigJayDogg3]

The search on the site's page isn't the best. Try google searching the site. If you go to google, type in the search criteria, then enter

site: GM-Trucks.com/forums

. Ever since I found this out, there have been several times I searched the site and didn't find what I needed, then googled it and pulled up like 20 topics.

[atboley]

im assuming that it has auto a/c? thats the system that that problem occures most often... if it does have auto a/c then its probably you blower resistor, they are fancy reisters that are not really a resistor, its like a little module that controls the motor... but anyways heres a bulletin for it...

 

 

Subject: HVAC Blower Continues to Run with Key Off - kw corrosion CJ2 information AC heat control mode air condition moisture water module fan #PIT3011 - (06/10/2004)

 

 

 

 

Models: .

 

 

The following diagnosis might be helpful if the vehicle exhibits the described in the PI.

 

SERVICE VME

Some customers may comment that their 2003 Full-Size Pickup / Utility A/C blower motor continues to run even when the key is removed from the ignition. The root cause is an internal failure within Linear Power Module ( LPM ) or also known as the Blower Motor Control Processor. The supplier has corrected their internal soldering process and effective with shipments after March 3, 2003, all LPMs should be good. The service fix is to replace the LPM (P/N 52495874).

 

.

 

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance.

 

<a href="#ss2-1526564">

Models:

(03 CHEVROLET FULL SIZE PICKUPS AND UTILITIES) and (03 GMC FULL SIZE PICKUPS AND UTILITIES) and (03 CADILLAC FULL SIZE UTILITIES)

[pwall]

This happened to me just last week. I posted 2 seperate threads and unfortunately, no responses.

 

It cost be $400 to have it fixed as the dealership.....in my 2002, it was the HVAC control module.

Same symptons as you....turn off the truck and walk away, the hvac fan would stay on.

I also lost all control of the hvac, couldn't adjust anything.