# Blower fan **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet, 1500\ **Created:** [February 3, 2013, 12:37am UTC](https://community.cartalk.com/t/blower-fan/77122 "2013-02-03T00:37:23Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Swim7](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@Swim7](https://community.cartalk.com/u/Swim7)\ **Post date:** [February 3, 2013, 12:37am UTC](https://community.cartalk.com/t/blower-fan/77122/1 "2013-02-03T00:37:23Z")
I have a 1999 Chevy Suburban. The blower fan for the heater/AC was only working on high so I replaced the resistor and relay at the same time. Still no change so I replaced the switch and 30 amp fuse. The first three settings worked but not the high. I checked continuity of the wires between the switch and relay and they were fine. I then thought it might be the blower fan which I replaced but still not working on high. I am stumped. Any suggestions? ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [February 3, 2013, 1:06am UTC](https://community.cartalk.com/t/blower-fan/77122/2 "2013-02-03T01:06:25Z")
@Swim7 closely look at all the pigtails (blower and resistor). GM has known problems with melted pigtails. ---
**Author:** ![Swim7](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@Swim7](https://community.cartalk.com/u/Swim7)\ **Post date:** [February 3, 2013, 1:52am UTC](https://community.cartalk.com/t/blower-fan/77122/3 "2013-02-03T01:52:53Z")
The contact on the switch which carries the current from the fuse block looks burnt. This sits next to the wire for the high setting. Could this be responsible? I would think it would effect all the settings. I don’t think the resistor is involved because the high bypasses it and goes directly to the relay ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [February 3, 2013, 2:34am UTC](https://community.cartalk.com/t/blower-fan/77122/4 "2013-02-03T02:34:05Z")
@Swim7 Yes this is the next part that must be replaced. [http://www.rockauto.com/catalog/moreinfo.php?pk=663902&cc=1352988](http://www.rockauto.com/catalog/moreinfo.php?pk=663902&cc=1352988) [http://www.rockauto.com/catalog/moreinfo.php?pk=85731&cc=1352988](http://www.rockauto.com/catalog/moreinfo.php?pk=85731&cc=1352988) ---
**Author:** ![Swim7](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@Swim7](https://community.cartalk.com/u/Swim7)\ **Post date:** [February 3, 2013, 3:24am UTC](https://community.cartalk.com/t/blower-fan/77122/5 "2013-02-03T03:24:02Z")
Thank you