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Picture of old rugged cross
posted
Without any previous warning today got in the old van and the heater fan would not run on any setting?

Help please.




"Practice like you want to play in the game"
 
Posts: 11715 | Registered: September 21, 2005Reply With QuoteReport This Post
Only the strong survive
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I'll sent someone over tomorrow to see what model and year so we can go from there. Roll Eyes



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41
 
Posts: 9711 | Location: Herndon, VA | Registered: June 11, 2009Reply With QuoteReport This Post
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Fuse?
Object fell through the dash defroster vent and jammed the fan blade?
Motor wore out?
Fan-speed circuit board?
Corroded connector? (then probably smoked)
Fan is holding out for better working conditions?
 
Posts: 568 | Location: WI | Registered: July 07, 2011Reply With QuoteReport This Post
Not really from Vienna
Picture of arfmel
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Rat built nest in fan housing which prevents fan from turning?




 
Posts: 21093 | Location: Young American Teen Club | Registered: January 30, 2007Reply With QuoteReport This Post
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I blame eco boost. All kidding aside. Check radiator levels, check air box, check distribution box, check all fuses. Finally track down all the wiring for the fan
 
Posts: 3398 | Location: Virginia | Registered: December 23, 2010Reply With QuoteReport This Post
Security Sage
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Could be the resistor or a fuse.



RB

 
Posts: 6201 | Location: Michiana | Registered: March 01, 2005Reply With QuoteReport This Post
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It is a late 90's or 2000 year.

I drove it a couple hundred miles just a few days ago and it worked fine. I have had no previous problems. Thinking it is an electrical issue. A friend just had a similar thing happen with this vintage of Tahoe.


????




"Practice like you want to play in the game"
 
Posts: 11715 | Registered: September 21, 2005Reply With QuoteReport This Post
Page late and a dollar short
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Check fuse first thing, then a 12V test light on wire to blower motor. Power at wire, replace motor. No power at motor, back track to blower relay, blower motor resistor, HVAC control at dash and wiring back to fuse panel.

Tahoe's problem is a different thing IMO, blower motor resistor is a known problem with those.
 
Posts: 4746 | Location: Livingston County Michigan USA | Registered: August 11, 2002Reply With QuoteReport This Post
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Thanks guys, I will check into tomorrow.




"Practice like you want to play in the game"
 
Posts: 11715 | Registered: September 21, 2005Reply With QuoteReport This Post
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resistor block




 
Posts: 6930 | Registered: October 15, 2008Reply With QuoteReport This Post
Knowing is Half the Battle
Picture of Scuba Steve Sig
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Assuming its the same thing, I've had to replace this on a 1999 and a 2002 Grand Prix back when we had them, forgot where I bought the resistor part, it wasn't expensive. Had to lie on my back with my head on the passenger floorboard and feet on the headrest to take out the 3 or 4 screws to do it. A real pain, but it worked.
 
Posts: 1620 | Location: Iowa by way of Missouri | Registered: July 18, 2002Reply With QuoteReport This Post
Fool for the City
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First, the pellet stove. Then the heater fan. Seems like some forces are at work trying to freeze your ass. Smile


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Posts: 4748 | Location: Pottstown, PA | Registered: April 26, 2002Reply With QuoteReport This Post
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Yeah MRMATT. I guess you are right Smile

I will do some checking today guys. That resister thingy sounds plausable.

Thanks again all.




"Practice like you want to play in the game"
 
Posts: 11715 | Registered: September 21, 2005Reply With QuoteReport This Post
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Picture of sigcrazy7
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quote:
Originally posted by MRMATT:
First, the pellet stove. Then the heater fan. Seems like some forces are at work trying to freeze your ass. Smile


Big Grin Big Grin

Usually if it’s a bad resistor, the fan will only operate at high speed. Maybe fuse, but my money would be on the blower motor.



[i]
 
Posts: 5078 | Location: Utah | Registered: December 18, 2008Reply With QuoteReport This Post
Thank you
Very little
Picture of HRK
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Rockauto, Chevy DisAstro van most likely the same
parts as the GMC, Blower Motor Control Module/Resistors are about $20

Blower motors are $11 to $30 depending on what you want.

For less than $50 you can replace everything..

http://www.rockauto.com/en/cat...dule+/+resistor,6557



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Posts: 11117 | Location: Mouseville, FL | Registered: November 07, 2008Reply With QuoteReport This Post
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Great info guys. Sure appreciate it. Thanks for the link HRK.

Sincerely, orc




"Practice like you want to play in the game"
 
Posts: 11715 | Registered: September 21, 2005Reply With QuoteReport This Post
Circling the bowl
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quote:
Originally posted by sigcrazy7:
quote:
Originally posted by MRMATT:
First, the pellet stove. Then the heater fan. Seems like some forces are at work trying to freeze your ass. Smile


Big Grin Big Grin

Usually if it’s a bad resistor, the fan will only operate at high speed. Maybe fuse, but my money would be on the blower motor.


I agree with this. But check fuses first, always check fuses before jumping further into an issue.

A quick way to know if the blower motor is bad or weak is to put the fan switch on high and pound on the blower motor. If the blower motor works, then you usually have found the culprit. If the motor doesn't run, then need to check for power and ground at the motor.
 
Posts: 4586 | Location: Manteca, CA | Registered: May 30, 2006Reply With QuoteReport This Post
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