Question about GMC Yukon XL
Under the dash heater fan
Posted by Anonymous on
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Posted on Jan 02, 2017
hello your heater blower fan is located in your heater box pass you will see a stop sign shaped flat flared end metal piece about 6inches diameter all the way around held in with either 6 or 8 1/4bolt heads unscrew these unplug wire feed pry lightly away from box fan assembly will come right out if your blower moter doesnt come with plastic fan fins you will need to use the old one usaully held on with a clip once removed slide off the fan shaft install to new motor reintall if no gasket take black permatex apply a thin coat around outer edge of new fan tighten plug power back on done goodluck
Posted on Sep 13, 2008
you need to remove your glove box assy.(beleave only 2 screws and pivot clips) make sure its not anything from glove box that has slipped behind. once box is out uf way you can access easier the blower motor assy. it actually attaches into blower box from bottom side. when looking at you will find three screw/bolts fastening motor to casing. remove those and then slowly lower motor and fan cage(attached to motor shaft) out from housing. sometimes it takes a little convincing to come out but not real tough. once out you most likely find the object causing noise in fan cage or resting up on lip area of housing unit. once found install in reverse order. let me know if this helps or if we need to dig a little deeper into! good luck!
Posted on Feb 02, 2009
It has been a long time since I've replaced one of those. From what I remember you don't have to go through pulling the heater box out. You do need to remove the glove box assembly. Look up under the passenger side of the dash. If you see the bulge of the motor/cover hanging straight down then remove the cover and the motor will be there. If you don't see that then te motor is mounted horizonally. If that is the case then the fresh air door assembly will need to be removed and it is behind that.
Here is a quick check to see if the motor is bad. Thump the bottom of the heater box by the passenger's feet. if the motor comes alive or makes noise then it is bad. Also check the fuse and make sure that it doesn't work on any speed. (the resistor would prevent operation on only one speed or more but generally not all speeds)
Posted on Apr 05, 2009
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