# Thermostat 89 GMC Rally

**URL:** <https://community.cartalk.com/t/thermostat-89-gmc-rally/35277>\
**Category:** Maintenance/Repairs\
**Tags:** van, gmc, rally, radiators\
**Created:** [August 19, 2009, 3:30pm UTC](https://community.cartalk.com/t/thermostat-89-gmc-rally/35277 "2009-08-19T15:30:10Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![doug.walker](https://avatars.discourse-cdn.com/v4/letter/d/65b543/32.png) [@doug.walker](https://community.cartalk.com/u/doug.walker)\
**Post date:** [August 19, 2009, 3:30pm UTC](https://community.cartalk.com/t/thermostat-89-gmc-rally/35277/1 "2009-08-19T15:30:10Z")

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I am trying to remove the thermostat from an 89 GMC Rally. I got one side off but not the other because there are a couple of braces using the same post that the thermometer housing is on. One brace holds up the oil dipstick tube and moved off easily; the other is holding a part that I have not identified. Pictures here: [http://www…therm.html](http://www.supermandamfool.com/vantherm.html)  
  
  
  
 Any suggestions?

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**Author:** ![doug.walker](https://avatars.discourse-cdn.com/v4/letter/d/65b543/32.png) [@doug.walker](https://community.cartalk.com/u/doug.walker)\
**Post date:** [August 20, 2009, 1:38am UTC](https://community.cartalk.com/t/thermostat-89-gmc-rally/35277/2 "2009-08-20T01:38:21Z")

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Figured it out. I had to remove the belt tensioner.

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**Author:** ![waterboy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/waterboy/32/764_2.png) [@waterboy](https://community.cartalk.com/u/waterboy)\
**Post date:** [August 20, 2009, 1:56am UTC](https://community.cartalk.com/t/thermostat-89-gmc-rally/35277/3 "2009-08-20T01:56:23Z")

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Glad you got it, goofy engineering if you ask me.

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**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\
**Post date:** [August 20, 2009, 1:58am UTC](https://community.cartalk.com/t/thermostat-89-gmc-rally/35277/4 "2009-08-20T01:58:32Z")

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Thanks for posting back.

I couldn’t figure out what that unit was you circled in red.