1999 Silverado Extended Cab 3rd Door

[QuickSix17]

I been through three AC/Heater blower motors in the last 2 years. They keep shorting what I assume is from a leak. It's not the heater core. No noticeable fluid in the floor board. Any one else had this issue? Please help. Thanks!

 

[zora]

Is their any evidence of a fluid like stain to support your guess?
Have all the motors been from the same manufacturer?
No other electrical issues, bulbs burning out frequently, etc.?

 

[QuickSix17]

I have had water in the floor board before, but that was before the first motor expired. I haven't noticed any since. The last two I've not noticed any fluid or stains.. As far as I know no other electrical issues. If you tap the motor it'll barely spin. Like it's seized up. No electrical smells either.

 

[QuickSix17]

Yes, same manufacturer. Life time warranty on it.

 

[zora]

I would consider a different brand motor

 

[QuickSix17]

3 of the same kind shorting out? Won't a different brand do the same thing?

 

[zora]

you have another explanation? you state the problem is mechanical in nature, it is seizing. Excessive voltage will burn out a motor but you have no other symptoms such as failing bulbs, headlights, etc. Do you have clogged vents that no air is flowing but I think you would notice that the minute you put in the new motors. You dont have a cabin air filter? Is there a country of manufacture on the motor, perhaps China?

 

[tonymont]

Since the problem has been persistent for the past few years, you should have it checked by a car a/c expert.