# GMC 1500 blower dysfunction

**URL:** <https://community.cartalk.com/t/gmc-1500-blower-dysfunction/112832>\
**Category:** Maintenance/Repairs\
**Created:** [February 25, 2018, 4:34pm UTC](https://community.cartalk.com/t/gmc-1500-blower-dysfunction/112832 "2018-02-25T16:34:49Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Craig47](https://avatars.discourse-cdn.com/v4/letter/c/f05b48/32.png) [@Craig47](https://community.cartalk.com/u/Craig47)\
**Post date:** [February 25, 2018, 4:34pm UTC](https://community.cartalk.com/t/gmc-1500-blower-dysfunction/112832/1 "2018-02-25T16:34:49Z")

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Hi i have a 2004 chev. My blower stopped working. bought a new blower motor and its still not working. What else could it be ?

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**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 25, 2018, 6:38pm UTC](https://community.cartalk.com/t/gmc-1500-blower-dysfunction/112832/2 "2018-02-25T18:38:40Z")

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Do ANY of the blower speeds work?

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**Author:** ![Docnick](https://avatars.discourse-cdn.com/v4/letter/d/ecae2f/32.png) [@Docnick](https://community.cartalk.com/u/Docnick)\
**Post date:** [February 25, 2018, 7:55pm UTC](https://community.cartalk.com/t/gmc-1500-blower-dysfunction/112832/3 "2018-02-25T19:55:35Z")

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If no speed works, OP may have a blown fuse or a bad electrical switch or connection. That should be checked out first.

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [February 26, 2018, 1:44am UTC](https://community.cartalk.com/t/gmc-1500-blower-dysfunction/112832/4 "2018-02-26T01:44:36Z")

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> [@Craig47](#):
>
> What else could it be ?

I presume you mean the HVAC blower. Faulty fuse, switch, ground, & electronic module (or blower resistor block) are all possibilities. A blower motor is just simple DC motor, goes faster the higher the voltage input. Suggest to start by measuring the voltage to it on the various fan speed switch settings. It could also be stalling out b/c of debris in the fan cage area, but if you’ve replaced the motor already you probably already verified the fan rotates freely.