No Heat At All

Shawn-GMC · 12-21-2008, 11:18 PM

02 JIMMY, its like minus -40 here and my truck is outside 24/7, now i have command start so i let my truck warm up for a while, get in and my heater controls are on 4 and hot and on defroster, but nothing is blowing, nothing at all. No sound nothing, and i turn it to off and i hear it sis for a second then off. Does this sound like a blower motor?

Kaznlilgreenmen · 12-22-2008, 08:25 AM

Quote: Originally Posted by Shawn-GMC

02 JIMMY, its like minus -40 here and my truck is outside 24/7, now i have command start so i let my truck warm up for a while, get in and my heater controls are on 4 and hot and on defroster, but nothing is blowing, nothing at all. No sound nothing, and i turn it to off and i hear it sis for a second then off. Does this sound like a blower motor?

I would start there...esp if the fan is not turning on at all..even more so i would check the fuses..if the fuses are good my next step would be the motor or the wiring to it

ls1s10onair · 12-22-2008, 08:28 AM

dumb question..... did you try the other speeds, cuz it could be the resistor...... if they dont work, start with fuses, if all are good, its prob the blower motor.... you can also bang on the blower motor and see if it kicks over

Hostility_FMX · 12-22-2008, 04:46 PM

mine does the same thing, i didnt check fuses, but i had to order a new blower, sucks driving around in a cold truck, i also picked up a new thermostat because when it kicks in its not that warm, mine kicks in randomly when im driving, or if i hit a bump and the fan turns a bit it starts. must be a dead spot on the fan.

Shawn-GMC · 12-22-2008, 08:24 PM

took the old one out.. broke it to peices.. stupid god damn gm.. Got to mad with it so i gave up on it tonight. But i plugged it in and the NEW motor would spin in 1-2-3 but not in 4... WHAT NOW!

gchemist · 12-22-2008, 10:23 PM

Drive with gloves on!!

Kaznlilgreenmen · 12-23-2008, 08:26 AM

Quote: Originally Posted by Shawn-GMC

took the old one out.. broke it to peices.. stupid god damn gm.. Got to mad with it so i gave up on it tonight. But i plugged it in and the NEW motor would spin in 1-2-3 but not in 4... WHAT NOW!

Maybe its too early and I just can't compute yet but...new as in brand new? or new as in new to your possession? I would also check the speed switch..esp if its working on 1,2,3.

Hostility_FMX · 12-23-2008, 09:13 AM

how hard is it to get to under the hood? is it just like 6 bolts and thats it from the firewall?

Shawn-GMC · 12-23-2008, 07:29 PM

yeah but theres a rubber cover over mine and i hate to cut it out, it actually told u where to cut.. and yes six bolts it easy, trying to get it out in one piece nope.. And its NEW brand spankin new and it only works on 1-2-3 and shuts off on 4

Hostility_FMX · 12-24-2008, 05:41 PM

ok i actually decided to pop my hood the other day to look at it, how do you get those bolts that are right by the fender, a small nut driver?

drummerdude89 · 12-24-2008, 05:59 PM

sounds like it's the resistor then, like lt1s10onair was saying earlier, which is why the 4th speed isn't working

Shawn-GMC · 12-25-2008, 12:39 PM

k well i got a repair manual for christmas haha it says its most likely the resistor to. How do i go abouts checking it? Get a volt meter and put it on each terminal and change speeds?

loweredd · 01-11-2009, 07:52 PM

If you use a volt meter, you don't need to change speeds. The resistor will change the amount of juice going out at each terminal. That's how it works to make the blower blow at different speeds. If it's working on 1, 2, and 3, but not 4, it IS the resistor.

Mine did this the other morning. Nothing worked. None of the speeds. I went inside, came out a little later, and everything was working great. Hmmmmmmm.

towb3 · 01-16-2009, 08:35 PM

Ahhhhhhhh. Looks like I will be replacing the resistor as well. I went ahead and bought a new blower motor the other day. When turning the key on I can hear the blower motor spinning but will not change speeds from just a low speed. I guess replacing that answers my problem. Hopefully. Just any parts shop carry replacement resistor?

12-21-2008, 11:18 PM	#1
Shawn-GMC Registered User Age: 19 Join Date: Jul 2006 Posts: 471 Location: Canada User is: OffLine	No Heat At All 02 JIMMY, its like minus -40 here and my truck is outside 24/7, now i have command start so i let my truck warm up for a while, get in and my heater controls are on 4 and hot and on defroster, but nothing is blowing, nothing at all. No sound nothing, and i turn it to off and i hear it sis for a second then off. Does this sound like a blower motor?
	[Reply w/Quote]

12-22-2008, 08:25 AM	#2
Kaznlilgreenmen I piss excellence Age: 25 Join Date: Oct 2004 Posts: 850 Location: Springville Ny User is: OffLine	Re: No Heat At All Quote: Originally Posted by Shawn-GMC 02 JIMMY, its like minus -40 here and my truck is outside 24/7, now i have command start so i let my truck warm up for a while, get in and my heater controls are on 4 and hot and on defroster, but nothing is blowing, nothing at all. No sound nothing, and i turn it to off and i hear it sis for a second then off. Does this sound like a blower motor? I would start there...esp if the fan is not turning on at all..even more so i would check the fuses..if the fuses are good my next step would be the motor or the wiring to it
	[Reply w/Quote]

12-22-2008, 08:28 AM	#3
ls1s10onair Local Tech Age: 27 Join Date: Jan 2008 Posts: 3,488 Location: westwood, nj User is: OffLine	Re: No Heat At All dumb question..... did you try the other speeds, cuz it could be the resistor...... if they dont work, start with fuses, if all are good, its prob the blower motor.... you can also bang on the blower motor and see if it kicks over
	[Reply w/Quote]

12-22-2008, 04:46 PM	#4
Hostility_FMX Registered User Age: 22 Join Date: Sep 2008 Posts: 215 Location: Peterborough, Ontario User is: OffLine	Re: No Heat At All mine does the same thing, i didnt check fuses, but i had to order a new blower, sucks driving around in a cold truck, i also picked up a new thermostat because when it kicks in its not that warm, mine kicks in randomly when im driving, or if i hit a bump and the fan turns a bit it starts. must be a dead spot on the fan.
	[Reply w/Quote]

12-22-2008, 08:24 PM	#5
Shawn-GMC Registered User Age: 19 Join Date: Jul 2006 Posts: 471 Location: Canada User is: OffLine	Re: No Heat At All took the old one out.. broke it to peices.. stupid god damn gm.. Got to mad with it so i gave up on it tonight. But i plugged it in and the NEW motor would spin in 1-2-3 but not in 4... WHAT NOW!
	[Reply w/Quote]

12-22-2008, 10:23 PM	#6
gchemist Registered User Join Date: May 2006 Posts: 407 Location: Austin User is: OffLine	Re: No Heat At All Drive with gloves on!!
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12-23-2008, 08:26 AM	#7
Kaznlilgreenmen I piss excellence Age: 25 Join Date: Oct 2004 Posts: 850 Location: Springville Ny User is: OffLine	Re: No Heat At All Quote: Originally Posted by Shawn-GMC took the old one out.. broke it to peices.. stupid god damn gm.. Got to mad with it so i gave up on it tonight. But i plugged it in and the NEW motor would spin in 1-2-3 but not in 4... WHAT NOW! Maybe its too early and I just can't compute yet but...new as in brand new? or new as in new to your possession? I would also check the speed switch..esp if its working on 1,2,3.
	[Reply w/Quote]

12-23-2008, 09:13 AM	#8
Hostility_FMX Registered User Age: 22 Join Date: Sep 2008 Posts: 215 Location: Peterborough, Ontario User is: OffLine	Re: No Heat At All how hard is it to get to under the hood? is it just like 6 bolts and thats it from the firewall?
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12-23-2008, 07:29 PM	#9
Shawn-GMC Registered User Age: 19 Join Date: Jul 2006 Posts: 471 Location: Canada User is: OffLine	Re: No Heat At All yeah but theres a rubber cover over mine and i hate to cut it out, it actually told u where to cut.. and yes six bolts it easy, trying to get it out in one piece nope.. And its NEW brand spankin new and it only works on 1-2-3 and shuts off on 4
	[Reply w/Quote]

12-24-2008, 05:41 PM	#10
Hostility_FMX Registered User Age: 22 Join Date: Sep 2008 Posts: 215 Location: Peterborough, Ontario User is: OffLine	Re: No Heat At All ok i actually decided to pop my hood the other day to look at it, how do you get those bolts that are right by the fender, a small nut driver?
	[Reply w/Quote]

12-24-2008, 05:59 PM	#11
drummerdude89 Registered User Age: 21 Join Date: Feb 2008 Posts: 120 Location: Arizona User is: OffLine	Re: No Heat At All sounds like it's the resistor then, like lt1s10onair was saying earlier, which is why the 4th speed isn't working
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12-25-2008, 12:39 PM	#12
Shawn-GMC Registered User Age: 19 Join Date: Jul 2006 Posts: 471 Location: Canada User is: OffLine	Re: No Heat At All k well i got a repair manual for christmas haha it says its most likely the resistor to. How do i go abouts checking it? Get a volt meter and put it on each terminal and change speeds?
	[Reply w/Quote]

01-11-2009, 07:52 PM	#13
loweredd Say lowered d Age: 31 Join Date: Nov 2001 Posts: 1,345 Location: Iowa User is: OffLine	Re: No Heat At All If you use a volt meter, you don't need to change speeds. The resistor will change the amount of juice going out at each terminal. That's how it works to make the blower blow at different speeds. If it's working on 1, 2, and 3, but not 4, it IS the resistor. Mine did this the other morning. Nothing worked. None of the speeds. I went inside, came out a little later, and everything was working great. Hmmmmmmm.
	[Reply w/Quote]

01-16-2009, 08:35 PM	#14
towb3 Ehhh! Age: 28 Join Date: Jun 2008 Posts: 1,688 Location: Belleville, IL/St.Louis User is: OffLine	Re: No Heat At All Ahhhhhhhh. Looks like I will be replacing the resistor as well. I went ahead and bought a new blower motor the other day. When turning the key on I can hear the blower motor spinning but will not change speeds from just a low speed. I guess replacing that answers my problem. Hopefully. Just any parts shop carry replacement resistor?
	[Reply w/Quote]