03 Silverado no blower
#1
03 Silverado no blower
Speeds 4 and 5 stopped working shortly after I bought the truck 2 years ago. The blower stopped working completely about a month ago. Since then I've done the following:
1. Replaced resistor. The plug on the old resistor melted, so I had to splice a new plug in. All 7 wires were spliced accordingly. I plugged the new resistor into the blower, but no go.
2. Figured maybe the blower went, too, so I bought a new one. Plugged the new blower in, but still no go.
3. Checked all fuses related to the blower and HVAC. Every fuse is intact. Can a 40W fuse look intact but still be bad?
At this point I'm out of ideas and going crazy. Any suggestions would be greatly appreciated. Could it possibly be the ****/switch on the dash has gone bad?
1. Replaced resistor. The plug on the old resistor melted, so I had to splice a new plug in. All 7 wires were spliced accordingly. I plugged the new resistor into the blower, but no go.
2. Figured maybe the blower went, too, so I bought a new one. Plugged the new blower in, but still no go.
3. Checked all fuses related to the blower and HVAC. Every fuse is intact. Can a 40W fuse look intact but still be bad?
At this point I'm out of ideas and going crazy. Any suggestions would be greatly appreciated. Could it possibly be the ****/switch on the dash has gone bad?
#2
CF Active Member
Considering what you have already done,I would suspect the HVAC control panel itself...It simply unplugs with 2 connectors once the dash fascia is removed.
You could also test one from a friends truck of same model year. Literally 5 minutes to remove.
I believe the 03' to 06' models were much more prone to failure than the earlier 99' to 02' versions.
E-bay or a wrecking yard could be a good option
You could also test one from a friends truck of same model year. Literally 5 minutes to remove.
I believe the 03' to 06' models were much more prone to failure than the earlier 99' to 02' versions.
E-bay or a wrecking yard could be a good option
#3
Bought a voltmeter. Pulled the climate control module out of the dash. Tested the incoming black plug and I have power coming to the module. I also tested the resistance of all five speeds on the module. Had a 000 (good) reading on all, including the OFF position. So I plugged the module back in and tested the newly spliced in plug to the resistor. I have power coming through the G terminal (terminals A-F have nothing but I think that's irrelevant). Now, when I plug it into the new resistor and test the plug that attaches to the blower motor, I get nothing. I guessed that this new resistor I installed is either faulty right from the box or I fried it somehow when I plugged it in. So I bought another new resistor.
Something I should mention is that when I found I had power on the G terminal, I had the fan speed **** in the OFF position. Should I be getting power at all? I don't want to plug in the 2nd new resistor and have the same thing happen as the 1st one.
Something I should mention is that when I found I had power on the G terminal, I had the fan speed **** in the OFF position. Should I be getting power at all? I don't want to plug in the 2nd new resistor and have the same thing happen as the 1st one.
#4
67Motorcat, thank you for the suggestions. Considering the part from O'Reillys or NAPA is $115 plus a $200 core charge , the junkyard is looking like a more affordable option.
Thread
Thread Starter
Forum
Replies
Last Post
spartanzz
Silverado, Sierra & Fullsize Pick-ups
1
August 6th, 2012 3:42 PM
xbigblue
Silverado, Sierra & Fullsize Pick-ups
1
January 15th, 2012 5:19 PM
seuf
Silverado, Sierra & Fullsize Pick-ups
0
June 25th, 2010 6:51 AM
marksusanf
Silverado, Sierra & Fullsize Pick-ups
3
June 1st, 2010 8:37 PM
rmorton
Silverado, Sierra & Fullsize Pick-ups
0
February 9th, 2010 12:48 PM